STE100A - STMicroelectronics

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STE10/100A

December 1999

This is preliminary information on a new product now in development. Details are subject to change without notice.

1.0 DESCRIPTION

The STE10/100 is a high performance PCI Fast

Ethernet controller with integrated physical layer in-

terface for 10BASE-T and 100BASE-TX application.

It was designed with advanced CMOS technology to

provide gluel ess 32-bit bus master interface for PCI

bus, boot ROM interface, CSMA/CD protocol for Fast

Ethernet, as well as the physical media interface for

100BASE-TX of IEEE802.3u and 10BASE-T of

IEEE802.3. The auto-negotiation function is also

supported for speed and duplex detection.

The STE10/100 provides both half-duplex and full-

duplex operation, as well as support for full-duplex

flow control. It provides long FIFO buffers for trans-

mission and receiving, and early interrupt mecha-

nism to enhance performance. The STE10/100 also

supports ACPI and PCI compliant power manage-

men t function.

2.0 FEATURES

2.1 Industry standard

■IEEE802. 3u 100BASE-TX and IEEE802.3

10BASE-T co mp lian t

■Support for IEEE802.3x flow control

■IEEE802.3u A uto-Negotiation su pport for

10BASE-T a nd 1 00BASE-TX

■PCI bus interface Rev. 2.2 co mpliant

■ACP I and PCI power managem ent standard

compliant

■Support PC99 wake on LAN

2.2 FIFO

■Provides indepe ndent transm ission and

receiving FIFOs, each 2k bytes long

■P r e - fe tc h e s up to two t rans m it p a c ke ts to

minimize inter frame gap (IFG) to 0.96us

■Retransmits collided packet without reload from

host memory within 64 bytes.

■Automatically retransmits FIFO under-run

packet with maximum drain threshold until 3rd

time retry failure without influencing the

registers and transmit threshold of next packet.

PQFP128 (14x20x2.7mm)

ORDERING NUMBER: STE10/100A

PRODUCT PREVIEW

PCI 10/100 ETHERNET CONTROLLER

WITH INTEGRATED PHY (3.3V)

Figure 1. STE10/100Block Diagram

Tx FiFo

DMA

Flow

Control

Manchester

Encoder

Manchester

Decoder

MII

Controller

10 T X

Filter

100 clock

Recovery 10 clock

Recovery

BaseLine

Restore Adaptive

Equalization

TX Freq.

Synth.

Transmitter

Scrambler

Descrambler

Auto

Negotiation

4B/5B

5B/4B +

Link

Polarity

25Mhz

125Mhz

20Mhz

MA C S ubL ay e

MII Controller

Rx FiFo

PCI Controller

STE10/100A

2/66

2.3 PCI I/F

■Provides 32-bit PCI bus mas ter data transfer

■Supports PCI clock with frequency from 0Hz to 33MHz

■Supports network operation with PCI system clock from 20MHz to 33MHz

■Provides performance meter and PCI bus master latency timer for t uning the threshold to enhance the

performance

■Provides burst transmit packet interrupt and transmit/receive early interrupt to reduce host CPU

utilization

■As bus master, supports memory-read, memory-read-line, memory-read-multiple, memory-write,

memo ry-write-and-invalidate command

■Supports big or little endian byte ordering

2.4 EEPROM/Boot ROM I/F

■Provides writeable Flash ROM and EPR OM as boot ROM, up to 128kB

■Provides PCI to access boot ROM by byte, word, or double word

■Re-writes Flash boot ROM through I/O port by programming register

■Provides serial interface for read/write 93C46 EEPROM

■Automatically loads device ID, vendor ID, subsyst em ID, subsystem vendor ID, Maximum-Latency , and

Minimum -Grand f rom the 64 byte conten ts of 93C46 after PCI reset de-asserted

2.5 MAC/Physical

■Integrates the complete s et of Physical layer 100BA SE-T X and 10BASE- T fun c tions

■Provides Full-d uplex operation in both 100M bps and 10Mbps modes

■Provides Auto-negotiation (NWAY) fun ction of full/half duplex operation for both 10 and 100 Mbps

■Provides MLT-3 transceiver with DC restoration for B ase-l ine wander comp ensation

■Provides transmit wave-shaper, receive fi lters, and adaptive equalizer

■Provides MAC and Transceiver (TXC VR ) loop-back mode s for diagnost ic

■Built-in Stream Cipher Scrambler/ De-scrambler and 4B/5B encoder/de coder

■Supports external transmit transforme r with 1.414:1 turn ratio

■Supports external receive transformer with 1:1 turn ratio

2.6 LED Display

■Provides 2 LED display modes:

3 LED displays for

100Mbps (on) or 10Mbps (off)

Link (Remains on when link ok) or Act ivity (Blinks at 10Hz when receiving or transmit ting collis ion-free)

FD (Rem ains on when in Full duplex mode) or when collision detected (Blinks at 20Hz)

4 LED displays for

100 Link (On when 100M link ok)

10 Link (On when 10M link ok)

Activity (Blinks at 10Hz when receiving or transmitting)

FD (Remains on when in Full duplex mode) or when collision detected (Blinks at 20Hz)

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STE10/100A

2.7 Miscellaneous

■ACPI and PCI compliant power man agem ent functions offer significant power-savings performance

■Provides general purpose tim ers

■128-pin QFP package

Figure 2. System Diagram of the STE10/ 100

STE10/100

Serial

EEPROM Boot ROM

LEDs 25 MHz

Crystal

Xfmr Medium

PCI

Interface

STE10/100A

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3.0 PIN ASSIGNEMENT DIAGRAM

Figure 3. Pin Connection

44 45 46 47 48

123122121120 118119 117116115114113

AD-23

VSS-PCI

IDSEL

AD-24

AD-25

C-BEB3

VSS-PCI

AD-20

AD-21

AD-22

VDD-PCI

VSS-IR

VDD-PCI

AD-8

AD-7

C-BEB0

AD-6

VSS-PCI

AD-5

AD-4

VDD-PCI

AD-29

VDD-PCI

AD-30

AD-31

REQ#

PME#

GNT#

PCI-CLK

VSS-PCI

RST#

INTA#

LED M1/M2

VCC-detect

BrA-16/LED M2

BrA-15

VCC-detect

AVSSX

AVDDREC

AVSSREC

LED M1/M2

VSS-IR

102

101

100

AVSSI

IREF

AVDDI

AVDDX

D99TL443

39 40 41 42

124

AD-28

125

VSS-PCI

126

AD-27

127

AD-26

128

VDD-PCI

VDD-IR

BrA-14

BrA-12

BrA-11

BrA-13

16AD-16

AD-17

VDD-PCI

AD-19

AD-18

51 52 53 54 55 56

112 110111 109108107106105

AD-3

VSS-PCI

AD-2

AD-1

AD-0

N.C.

VSS-IR

BrA -0

VSS-IR

AVSST

VDD-IR

TX-

AVDDT

TX+

AVSSR

RX+

49 50

VSS-PCI

FRAME#

C-BEB2

BrWE#

BrOE#

BrA-10

BrCS#

EECS

BrD-7/ECK

BrD-6/EDI

VSS-IR

24PERR#

STOP#

DEVSEL#

IRDY#

TRDY#

VDD-PCI

PAR

SERR#

BrD-4

BrD-3

BrD-5/EDO

BrD-2

BrD-1

BrA-9

BrA-8

BrD-0

32AD-13

VSS-PCI

AD-14

C-BEB1

AD-15

33AD-12

38VDD-IR

AD-9

VSS-PCI

AD-11

AD-10

59 60 61 62 63 64

104103

BrA-1

BrA-3

BrA-2

VDD-IR

BrA-4

BrA-5

BrA6

BrA-7

RX-

AVDDR

57 58

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STE10/100A

4.0 4. PI N DESCRIPTION

Table 1. Pin Description

Pin No. Name Type Description

PCI bus Interface

113 INTA# O/D PCI interrupt request. STE10/100 asserts this signal when one of the interrupt

event is set.

114 RST# I PCI Reset signal to initialize the STE10/100. The RST signal should be asserted

for at least 100µs to ensure that the STE10/100 completes initialization. During

the reset period, all the output pins of STE10/100 will be placed in a high-

impedance state and all the O/D pins are floated.

116 PCI-CLK I PCI clock input to STE10/100 for PCI Bus functions. The Bus signals are

synchronized relative to the rising edge of PCI-CLK PCI-CLK must operate at a

frequency in the range between 20MHz and 33MHz to ensure proper network

operation

117 GNT# I PCI Bus Granted. This signal indicates that the STE10/100 has been granted

ownership of the PCI Bus as a result of a Bus Request.

118 REQ# O PCI Bus Request. STE10/100 asserts this line when it needs access to the PCI

Bus.

119 PME# O

OD The Power Management Event signal is an open drain, active low signal. The

STE10/100 will assert PME# to indicate that a power management event has

occurred.

When WOL (bit 18 of CSR18) is set, the STE10/100 is placed in Wake On LAN

mode. While in this mode, the STE10/100 will activate the PME# signal upon

receipt of a Magic Packet frame from the network.

In the Wake On LAN mode, when LWS (bit 17 of CSR18) is set, the LAN-WAKE

signal follows HP’s protocol; otherwise, it is IBM protocol.

120,121

123,124

126,127

1,2

6,7

9,10

12,13

15,16

29,30

32~35

43,44

46,47

49,50

52,53

AD-31,30

AD-29,28

AD-27,26

AD-25,24

AD-23,22

AD-21,20

AD-19,18

AD-17,16

AD-15,14

AD-13~10

AD-9

AD-8

AD-7, 6

AD-5,4

AD-3,2

AD-1,0

I/O Multiplexed PCI Bus address/data pins

C-BEB3

C-BEB2

C-BEB1

C-BEB0

I/O Bus command and byte enable

4 IDSEL I Initialization Device Select. This signal is asserted when the host issues

configuration cycles to the STE10/100.

18 FRAME# I/O Asserted by PCI Bus master during bus tenure

20 IRDY# I/O Master device is ready to begin data transaction

STE10/100A

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21 TRDY# I/O Target device is ready to begin data transaction

22 DEVSEL# I/O Device select. Indicates that a PCI target device address has been decoded

23 STOP# I/O PCI target device request to the PCI master to stop the current transaction

24 PERR# I/O Data parity error detected, driven by the device receiving data

25 SERR# O/D Address parity error

26 PAR I/O Parity. Even parity computed for AD[31:0] and C/BE[3:0]; master drives PAR for

address and write data phase, target drives PAR for read data phase

BootROM/EEPROM Interface

56~59

61~66

80~86

BrA0~3

BrA4~9

BrA10~15

BrA16/

LED M2 -

Fd/Col

I/O ROM data bus

Provides up to 128kB EPROM or Flash-ROM application space.

This pin can be programmed as mode 2 LED display for Full Duplex or Collision

status. It will be driven (LED on) continually when a full duplex configuration is

detected, or it will be driven at a 20 Hz blinking frequency when a collision status

is detected in the half duplex configuration.

67~71

BrD0~4

BrD5/EDO

BrD6/EDI

BrD7/ECK

O/I

O/O

BootROM data bus (0~7)

EDO: Data output of serial EEPROM, data input to STE10/1 00

EDI:Data input to serial EEPROM, data output from STE10/100

ECK:Clock input to serial EEPROM, sourced by STE10/100

76 EECS O Chip Select of serial EEPROM

77 BrCS# O BootR OM Chip Selec t

78 BrOE# O BootROM Read Output Enable for flash ROM application

79 BrWE# O BootROM Write Enable for flash ROM application.

Physical Interface

98 X1 I 25 MHz reference clock input for Physical portion. When an external 25 MHz

crystal is used, this pin will be connected to one of its terminals, and X2 will be

connected to the other terminal. If an external 25 MHz oscillator is used, then this

pin will be connected to the oscillator’s output pin.

97 X2 O 25 MHz reference clock output for Physical portion. When an external 25MHz

crystal is used, this pin will be connected to one of the crystal terminals (see X1,

above). If an external clock source is used, then this pin should be left open.

107,109 TX+, TX- O The differential Transmit outputs of 100BASE-TX or 10BASE-T, these pins

connect directly to Magnetic.

105,104 RX+, RX- I The dif ferential Receive inputs of 100BASE-TX or 10BASE-T, these pins connect

directly from Magnetic.

101 Iref O Reference Resistor connecting pin for reference current, directly connects a 5K

Ohm ± 1% resistor to Vss.

Table 1. Pin Description

Pin No. Name Type Description

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STE10/100A

LED display & Miscellaneous

90 LED M1-

LK/Act

LED M2-

Act

O This pin can be programmed as mode 1 or mode 2:

For mode 1:

LED display for Link and Activity status. This pin will be driven on continually

when a good Link test is detected. This pin will be driven at a 10 Hz blinking

frequency when either effective receiving or transmitting is detected.

For mode 2:

LED display for Activity status. This pin will be driven at a 10 Hz blinking

frequency when either effective receiving or transmitting is detected.

92 LED M1-

Speed

LED M2-

100 Link

O This pin can be programmed as mode 1 or mode 2:

For mode 1:

LED display for 100M b/s or 10M b/s speed. This pin will be driven on continually

when the 100M b/s network operating speed is detected.

For mode 2:

LED display for 100Ms/s link status. This pin will be driven on continually when

100Mb/s network operating spped is detected.

91 LED M1-

Fd/Col

LED M2-

10 Link

O This pin can be programmed as mode 1 or mode 2:

For mode 1:

LED display for Full Duplex or Collision status. This pin will be driven on

continually when a full duplex configuration is detected. This pin will be driven at

a 20 Hz blinking frequency when a collision status is detected in the half duplex

configuration.

For mode 2:

LED display for 10Ms/s link status. This pin will be driven on continually when

10Mb/s network operating speed is detected.

89 Vaux-

detect I When this pin is asserted, it indicates an auxiliary power source is supported from

the system.

88 Vcc-detect I When this pin is asserted, it indicates a PCI power source is supported.

Digital Power Pins

5,11,19,31,36,39,45,51,55,75,93,112,115,125 Vss

8,14,27,38,40,48,60,85,111,122,128 Vdd

Analog Power Pins

94,96,102,106,110 AVss

95,99,100,103,108 AVdd

Table 1. Pin Description

Pin No. Name Type Description

STE10/100A

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5.0 REGISTERS AND DESCRIPTORS DESCRIPTION

There are three kinds of registers within the STE10/100: STE10/100 configuration registers, PCI control/status

registers, and Transceiver control/status registers.

The STE10/100 confi guration regi sters are used to ini tiali ze and confi gure the ST E10/100 and for ident ifying

and querying the STE10/100.

The PCI control/status registers are used to communicate between the host and STE10/100. The host can ini-

tialize, control, and read the status of the STE10/100 through mapped I/O or memory address space.

The STE 10/100 c ontains 11 16-bit registers to supported Transceiver control and s tatus. They include 7 basic

registers which are defined according to clause 22 “Reconciliation Sub-layer and Media Independent Interface”

and clause 28 “Physical Layer link signaling for 10 Mb/s and 100 Mb/s Auto-Negotiation on twisted pair” of the

IEEE802.3u standard. In addition, 4 special registers are provided for advanced chip control and status.

The STE10/100 also provides receive and transmit descriptors for packet buffering and management.

5.1 STE10/100 Configuration Registers

An STE10/100 software dri ver can i nitiali ze and confi gur e the chip by w riting its confi guration regi ster s. The

contents of configuration registers are set to their default values upon power-up or w henever a hardw are reset

occurs, but their settings remain unchanged whenever a software reset occurs. The configuration registers are

byte, word, and double word accessible.

Table 2. STE10/10 0 configu ration register s list

Offset Index Name Descriptions

00h CR0 LID Loaded device ID and vendor ID

04h CR1 CSC Configuration Status and Command

08h CR2 CC Class Code and revision number

0ch CR3 LT Latency Timer

10h CR4 IOBA IO Base Address

14h CR5 MBA Memory Base Address

2ch CR11 SID Subsystem ID and vendor ID

30h CR12 BRBA Boot ROM Base Address (ROM size = 128KB)

34h CR13 CP Capability Pointer

3ch CR15 CINT Configuration Interrupt

40h CR16 DS driver space for special purpose

80h CR32 SIG Signature of STE10/100

c0h CR48 PMR0 Power Management Register 0

c4h CR49 PMR1 Power Management Register 1

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STE10/100A

Table 3. STE10/100 configuration registers table

Note: * : automatically recalled from EEPROM when PCI r eset is deserted

DS(4 0h), bit1 5-8, is rea d/write able register

SIG(80h) is hard wired registe r, read only

5.1.1 STE10/ 100 conf iguration registers des criptions

offset b31 ----------- b16 b15 ---------- b0

00h Device ID* Vendor ID*

04h Status Command

08h Base Class Code Subclass ------ Revision # Step #

0ch ------ ------ Latency timer cache line size

10h Base I/O address

14h Base memory address

18h~

28h Reserved

2ch Subsystem ID* Subsystem vendor ID*

30h Boot ROM base address

34h Reserved Cap_Ptr

38h Reserved

3ch Max_Lat* Min_Gnt* Interrupt pin Interrupt line

40h Reserved Driver Space Reserved

80h Signature of STE10/100

c0h PMC Next_Item_Ptr Cap_ID

c4h Reserved PMCSR

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

CR0(offset = 00h), LID - Loaded Identification number of Device and Vendor

31~16 LDID Loaded Device ID, the device ID number loaded from serial

EEPROM. From

EEPROM R/O

15~0 LVID Loaded Vendor ID, the vendor ID number loaded from serial

EEPROM. From

EEPROM R/O

From EEPRO M: Loade d from EEPROM

CR1(offset = 04h), CSC - Configuration command and status

31 S PE Status Parity Error.

1: means that STE10/100 detected a parity error. This bit will

be set even if the parity error response (bit 6 of CR1) is

disabled.

0 R/W

30 S ES Status Syste m Error.

1: means that STE10/100 asserted the system error pin. 0 R/W

STE10/100A

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29 SMA St atus Maste r Abort.

1: means that STE10/100 received a master abort and has

terminated a master transaction.

0 R/W

28 STA St atus Targe t Abort.

1: means that STE10/100 received a target abort and has

terminated a master transaction.

0 R/W

27 --- Reserved.

26, 25 SDST Status Device Select Timing. Indicates the timing of the chip’s

assertion of device select.

01: indicates a medium assertion of DEVSEL#

01 R/O

24 S DPR Status Data Parity Report.

1: when three conditions are met:

a. STE10/100 asserted parity error (PERR#) or it detected

parity error asserted by another device.

b. STE10/100 is operating as a bus master.

c. STE10/100’s parity error response bit (bit 6 of CR1) is

enabled.

0 R/W

23 S FBB St atus Fast Back-t o-Bac k

Always 1, since STE10/100 has the ability to accept fast back

to back transactions.

1 R/O

22~21 --- Reserved.

20 NC New Capabilities. Indicates whether the STE10/100 provides a

list of extended capabilities, such as PCI power management.

1: the STE10/100 provides the PCI management function

0: the STE10/100 doesn’t provide New Capabilities.

Same as

bit 19 of

CSR18

19~ 9 --- Reserved.

8 CSE Command System Error Response

1: enable system error response. The STE10/100 will assert

SERR# when it finds a parity error during the address phase.

0 R/W

7 --- Reserved.

6 CPE Command Parity Error Response

0: disable parity error response. STE10/100 will ignore any

detected parity error and keep on operating. Default value is

1: enable parity error response. STE10/100 will assert system

error (bit 13 of CSR5) when a parity error is detected.

0 R/W

5~ 3 --- Reserved.

2 CMO Co mma nd Master Opera tion Ability

0: disable the STE10/100 bus master ability.

1: enable the PCI bus master ability. Default value is 1 for

normal operation.

0 R/W

1 CMSA Command Memory Space Access

0: disable the memory space access ability.

1: enable the memory space access ability.

0 R/W

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

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STE10/100A

0 CIOSA Command I/O Space Access

0: enable the I/O space access ability.

1: disable the I/O space access ability.

0 R/W

R/W: R ead and Wr i te able. R O: Read ab le only.

CR2(offset = 08h), CC - Class Code and Revision Number

31~24 BCC Base Class Code. It means STE10/100 is a network controller. 02h RO

23~16 SC Subclass Code. It means STE10/100 is a Fast Ethernet

Controller. 00h RO

15~ 8 --- Reserved.

7 ~ 4 RN Revision Number, identifies the revision number of STE10/

100. Ah RO

3 ~ 0 SN Step Number, identifies the STE10/100 steps within the

current revisi on. 1h RO

RO: Read Onl y.

CR3(offset = 0ch), LT - Latency Timer

31~16 --- Reserved.

15~ 8 LT Latency Timer. This value specifies the latency timer of the

STE10/100

in units of PCI bus clock cycles. Once the STE10/100

asserts FRAME#, the latency timer starts to count. If the

latency timer expires and the STE10/100 is still asserting

FRAME#, the STE10/100 will terminate the data transaction

as soon as its GNT# is removed.

0 R/W

7 ~ 0 CLS Cache Line Size. This value specifies the system cache line

size in units of 32-bit double words(DW). The STE10/100

supports cache line sizes of 8, 16, or 32 DW. CLS is used by

the STE10/100 driver to program the cache alignment bits (bit

14 and 15 of CSR0) which are used for cache oriented PCI

commands, e.g., memory-read-line, memory-read-multiple,

and memory-write-and-invalidate.

0 R/W

CR4(offset = 10h), IOBA - I/O Base Address

31~ 7 IOBA I/O Base Address. This value indicate the base address of PCI

control and status register (CSR0~28), and Transceiver

registers (XR0~10)

0 R/W

6 ~ 1 --- reserved.

0 IOSI I/O Space Indicator.

1: means that the configuration registers map into I/O space. 1RO

CR5(offset = 14h), MBA - Memory Base Address

31~ 7 MBA Memory Base Address. This value indicate the base address

of PCI control and status register(CSR0~28), and Transceiver

registers(XR0~10)

0 R/W

6 ~ 1 --- reserved.

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

STE10/100A

12/66

0 IOSI Memory Space Indicator.

1: means that the configuration registers map into I/O space. 0RO

CR11(offset = 2ch), SID - Subsystem ID.

31~16 SID Subsystem ID. This value is loaded from EEPROM as a result

of power-on or hardware reset. From

EEPROM RO

15~ 0 SVID Subsystem Vendor ID. This value is loaded from EEPROM as

a result power-on or hardware reset. From

EEPROM RO

CR12(offset = 30h), BRBA - Boot ROM Base Address. This register should be initialized before accessing the

boot ROM space.

31~10 BRBA Boot ROM Base Address. This value indicates the address

mapping of the boot ROM field as well as defining the boot

ROM size. The values of bit 16~10 are set to 0 indicating that

the STE10/100 supports up to 128kB of boot ROM.

X: b31~17

0: b16~10 R/W

9 ~ 1 --- reserved RO R/W R/

0 BRE Boot ROM Enable. The STE10/100 will only enable its boot

ROM access if both the memory space access bit (bit 1 of

CR1) and this bit are set to 1.

1: enable Boot ROM. (if bit 1 of CR1 is also set)

0 R/W

CR13(offset = 34h), CP - Capabilities Pointer.

31~8 --- reserved

7~0 CP Capabilities Pointer. C0H RO

CR15(offset = 3ch), CI - Configuration Interrupt

31~24 ML Max_Lat register. This value indicates how often the STE10/

100 needs to access to the PCI bus in units of 250ns. This

value is loaded from serial EEPROM as a result of power-on

or hardware reset.

From

EEPROM RO

23~16 MG Min_Gnt register. This value indicates how long the STE10/

100 needs to retain the PCI bus ownership whenever it

initiates a transaction, in units of 250ns. This value is loaded

from serial EEPROM as a result power-on or hardware reset.

From

EEPROM RO

15~ 8 IP Interrupt Pin. This value indicates one of four interrupt request

pins to which the STE10/100 is connected.

01h: means the STE10/100 always connects to INTA#

01h RO

7 ~ 0 IL Interrupt Line. This value indicates the system interrupt

request lines to which the INTA# of STE10/100 is routed. The

BIOS will fill this field when it initializes and configures the

system. The STE10/100 driver can use this value to determine

priority and vector inform ation .

0 R/W

CR16(offset = 40h), DS - Driver Space for special purpose.

31~16 --- reserved

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

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STE10/100A

15~8 DS Driver Space for implementation-specific purpose. Since this

area won’t be cleared upon software reset, an STE10/100

driver can use this R/W area as user-specified storage.

0 R/W

7 ~ 0 --- reserved

CR32(offset = 80h), SIG - Signature of STE10/100

31~16 DID Device ID, the device ID number of the STE10/100. 2774h RO

15~0 VID Vendor ID, the vendor ID number of STMicroelectronics 104Ah RO

CR48(offset = c0h), PMR0, Power Management Register0.

PSD3c,

PSD3h,

PSD2,

PSD1,

PSD0

PME_Support.

The STE10/100 will assert PME# signal while in the D0, D1,

D2, D3hot and D3cold power state. The STE10/100 supports

Wake-up from the above five states. Bit 31 (support wake-up

from D3cold) is loaded from EEPROM after power-up or

hardware reset. To support the D3cold wake-up function, an

auxiliary power source will be sensed during reset by the

STE10/100 Vaux_detect pin. If sensed low, PSD3c will be set

to 0; if sensed high, and if D3CS (bit 31of CSR18) is set

(CSR18 bits 16~31 are recalled from EEPROM at reset), then

bit 31 will be set to 1.

X1111b RO

26 D2S D2_Support. The STE10/100 supports the D2 Power

Management State. 1RO

25 D1S D1_Support. The STE10/100 supports the D1 Power

Management State. 1RO

24~22 AUXC Aux Current. These three bits report the maximum 3.3Vaux

current requirements for STE10/100 chip. If bit 31 of PMR0 is

‘1’, the default value is 111b, meaning the STE10/100 needs

375 mA to support remote wake-up in D3cold power state.

Otherwise, the default value is 000b, meaning the STE10/100

does not support remote wake-up from D3cold power state.

XXXb RO

21 DSI The Device Specific Initialization bit indicates whether any

special initialization of this function is required before the

generic class device driver is able to use it.

0: indicates that the function does not require a device-specific

initialization sequence following transition to the D0

uninitialized state.

0RO

20 --- Reserved.

19 PMEC PME Clock. Indicates that the STE10/100 does not rely on the

presence of the PCI clock for PME# operation 0RO

18~16 VER Version. The value of 010b indicates that the STE10/100

complies with Revision 1.0a of the PCI Power Management

Interface Specification.

010b RO

15~8 NIP Next Item Pointer. This value is always 0h, indicating that

there are no additional items in the Capabilities List. 00h RO

7~0 CAPID Capability Identifier. This value is always 01h, indicating the

link list item as being the PCI Power Management Registers. 01h RO

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

STE10/100A

14/66

CR49(offset = c4h), PMR1, Power Management Register 1.

31~16 --- reserved

15 PMEST PME_Status. This bit is set whenever the STE10/100 detects

a wake-up event, regardless of the state of the PME-En bit.

Writing a “1” to this bit will clear it, causing the STE10/100 to

deassert PME# (if so enabled). Writing a “0” has no effect.

If PSD3c (bit 31 of PMR0) is cleared (i.e. it does not support

PME# generation from D3cold), this bit is by default 0;

otherwise, PMEST is cleared upon power-up reset only and is

not modified by either hardware or software reset.

X R/W1C*

14,13 DSCAL Data_Scale. Indicates the scaling factor to be used when

interpreting the value of the Data register. This field is

required for any function that implements the Data register.

The STE10/100 does not support Data register and

Data_Scale.

00b RO

12~9 DSEL Data_Select. This four bit field is used to select which data is

to be reported through the Data register and Data_Scale field.

This field is required for any function that implements the Data

The STE10/100 does not support Data_select.

0000b R/W

8 PME_En PME_En. When set, enables the STE10/100 to assert PME#.

When cleared, disables the PME# assertion.

If PSD3c (bit 31 of PMR0) is cleared (i.e. it does not support

PME# generation from D3cold), this bit is by default 0;

otherwise, PME_En is cleared upon power up reset only and is

not modified by either hardware or software reset.

X R/W

7~2 --- reserved. 000000b RO

1,0 PWRS PowerState. This two bit field is used both to determine the

current power state of the STE10/100 and to place the STE10/

100 in a new power state. The definition of this field is given

below.

00b - D0

01b - D1

10b - D2

11b - D3hot

If software attempts to write an unsupported state to this field,

the write operation will complete normally on the bus, but the

data is discarded and no state change occurs.

00b R/W

R/W1C *, Rea d Onl y and Wri te on e cl eared.

Table 4. Configuration Registers Descriptions

Bit # Name Descriptions Default Val RW Type

15/66

STE10/100A

5.2 PCI Control/Status registers

Table 5. PCI Control/Status reg ister s list

offset from base

address of CSR Index Name Descriptions

00h CSR0 PAR PCI acces s register

08h CSR1 TDR transmit demand register

10h CSR2 RDR receive demand register

18h CSR3 RDB receive descriptor base address

20h CSR4 TDB transmit descriptor base address

28h CSR5 SR status register

30h CSR6 NAR network access register

38h CSR7 IER interrupt enable register

40h CSR8 LPC lost packet counter

48h CSR9 SPR serial port register

50h CSR10 --- Reserved

58h CSR11 TMR Timer

60h CSR12 --- Reserved

68h CSR13 WCSR Wake-up Control/Status Register

70h CSR14 WPDR Wake-up Pattern Data Register

78h CSR15 WTMR watchdog timer

80h CSR16 ACSR5 status register 2

84h CSR17 ACSR7 interrupt enable register 2

88h CSR18 CR command register

8ch CSR19 PCIC PCI bus performance counter

90h CSR20 PMCSR Power Manage ment Comm and and Status

94h CSR21 --- Reserved

98h CSR22 --- Reserved

9ch CSR23 TXBR transmit burst counter/time-out register

a0h CSR24 FROM flash(boot) ROM port

a4h CSR25 PAR0 physical address register 0

a8h CSR26 PAR1 physical address register 1

ach CSR27 MAR0 multicast address hash table register 0

b0h CSR28 MAR1 multicast address hash table register 1

STE10/100A

16/66

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

CSR0(offset = 00h), PAR - PCI Access Register

31~25 --- reserved

24 MWIE Memory Write and Invalidate Enable.

1: enable STE10/100 to generate memory write invalidate

command. The STE10/100 will generate this command

while writing full cache lines.

0: disable generating memory write invalidate command. The

STE10/100 will use memory write commands instead.

0 R/W*

23 MRLE Memory Read Line Enable.

1: enable STE10/100 to generate memory read line command

when read access instruction reaches the cache line

boundary. If the read access instruction doesn’t reach the

cache line boundary then the STE10/100 uses the memory

read command instead.

0 R/W*

22 --- reserved

21 MRME Memory Read Multiple Enable.

1: enable STE10/100 to generate memory read multiple

commands when reading a full cache line. If the memory is

not cache-aligned, the STE10/100 uses the memory read

command instead.

0 R/W*

20~19 --- reserved

18,17 TAP Transmit auto-polling in transmit suspended state.

00: disable auto-polling (default)

01: polling own-bit every 200 us

10: polling own-bit every 800 us

11: polling own-bit every 1600 us

00 R/W*

16 --- reserved

15, 14 CAL Cache alignment. Address boundary for data burst, set after

reset

00: reserved (default)

01: 8 DW boundary alignment

10: 16 DW boundary alignment

11: 32 DW boundary alignment

00 R/W*

13 ~ 8 PBL Programmable Burst Length. This value defines the maximum

number of DW to be transferred in one DMA transaction.

value: 0 (unlimited), 1, 2, 4, 8, 16(default), 32

010000 R/W*

7 BLE Big or Little Endian selection.

0: little endian (e.g. INTEL)

1: big endian (only for data buffer)

0 R/W*

6 ~ 2 DSL Descriptor Skip Length. Defines the gap between two

descriptors in the units of DW. 0 R/W*

1 BAR Bus arbitration

0: receive operations have higher priority

1: transmit operations have higher priority

0 R/W*

17/66

STE10/100A

0 SWR Software reset

1: reset all internal hardware (including MAC and

transceivers), except configuration registers. This signal will

be cleared by the STE10/100 itself after the reset process is

completed.

0 R/W*

R/W* = Before writi ng the transmit and receive operati ons should be stopped.

CSR1(offset = 08h), TDR - Transmit demand register

31~ 0 TPDM Transmit poll demand.

While the STE10/100 is in the suspended state, a write to this

which checks the own-bit; if set, the transmit process is then

started.

FFFFFFFF

hR/W*

R/W* = Before writi ng the transmit proc ess should be in the suspended stat e.

CSR2(offset = 10h), RDR - Receive demand register

31 ~ 0 RPDM Receive poll demand

While the STE10/100 is in the suspended state, a write to this

which checks the own-bit, if set, the process to move data

from the FIFO to buffer is then started.

FFFFFFFF

hR/W*

R/W* = Before writi ng the receive process should be in the suspende d state.

CSR3(offset = 18h), RDB - Receive descriptor base address

31~ 2 SAR Start address of receive descriptor 0 R/W*

1, 0 RBND must be 00, DW boundary 00 RO

R/W* = Before writi ng the receive process should be stopped.

CSR4(offset = 20h), TDB - Transmit descriptor base address

31~ 2 SAT Start address of transmit descriptor 0 R/W*

1, 0 TBND must be 00, DW boundary 00 RO

R/W* = Before writi ng the transmit proc ess should be stopped.

CSR5(offset = 28h), SR - Status register

31~ 26 ---- reserved

25~ 23 BET Bus Error Type. This field is valid only when bit 13 of

CSR5(fatal bus error) is set. There is no interrupt generated by

this field.

000: parity error, 001: master abort, 010: target abort

011, 1xx: reserved

000 RO

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

STE10/100A

18/66

22~ 20 TS Transmit State. Reports the current transmission state only , no

interrupt will be generated.

000: stop

001: read descriptor

010: transmitting

011: FIFO fill, read the data from memory and put into FIFO

100: reserved

101: reserved

110: suspended, unavailable transmit descriptor or FIFO

overflow

111: write descriptor

000 RO

19~17 RS Receive State. Reports current receive state only, no interrupt

will be generated.

000: stop

001: read descriptor

010: check this packet and pre-fetch next descriptor

011: wait for receiving data

100: suspended

101: write descriptor

110: flush the current FIFO

111: FIFO drain, move data from receiving FIFO into memory

000 RO

16 NISS Normal Interrupt Status Summary. Set if any of the following

bits of CSR5 are asserted:

TCI, transmit completed interrupt (bit 0)

TDU, transmit descriptor unavailable (bit 2)

RCI, receive completed interrupt (bit 6)

0 RO/LH*

15 AISS Abnormal Interrupt Status Summary. Set if any of the

following bits of CSR5 are asserted:

TPS, transmit process stopped (bit 1)

TJT, transmit jabber timer time-out (bit 3)

TUF, transmit under-flow (bit 5)

RDU, receive descriptor unavailable (bit 7)

RPS, receive process stopped (bit 8)

RWT, receive watchdog time-out (bit 9)

GPTT, general purpose timer time-out (bit 11)

FBE, fatal bus error (bit 13)

0 RO/LH*

14 ---- reserved

13 FBE Fatal Bus Error.

1: on occurrence of parity error, master abort, or target abort

(see bits 25~23 of CSR5). The STE10/100 will disable all bus

access. A software reset is required to recover from a parity

error.

0 RO/LH*

12 --- reserved

11 GPTT General Purpose Timer Timeout, based on CSR11 timer

10 --- reserved

9 RWT Receive Watchdog Timeout, based on CSR15 watchdog timer

8 RPS Receive Process Stopped, receive state = stop 0 RO/LH*

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

19/66

STE10/100A

7 RDU Receive Descriptor Unavailable

1: when the next receive descriptor can not be obtained by the

STE10/100. The receive process is suspended in this

situation. To restart the receive process, the ownership bit of

the next receive descriptor should be set to STE10/100 and a

receive poll demand command should be issued (if the receive

poll demand is not issued, the receive process will resume

when a new recognized frame is received).

0 RO/LH*

6 RCI Receive Completed Interrupt

1: when a frame reception is completed. 0 RO/LH*

5 T UF Transmit Unde r-Flow

1: when an under-flow condition occurs in the transmit FIFO

during transmitting. The transmit process will enter the

suspended state and report the under-flow errror on bit 1 of

TDES0.

0 RO/LH*

4 --- Reserved

3 TJT Transmit Jabber Timer Time-out

1: when the transmit jabber timer expires. The transmit

processor will enter the stop state and TO (bit 14 of TDES0,

transmit jabber time-out flag) will be asserted.

0 RO/LH*

2 TDU Transmit Descr iptor Unava ilable

1: when the next transmit descriptor can not be obtained by

the STE10/100. The transmission process is suspended in this

situation. To restart the transmission process, the ownership

bit of the next transmit descriptor should be set to STE10/100

and, if the transmit automatic polling is not enabled, a transmit

poll demand command should then be issued.

0 RO/LH*

1 T PS Transmit Proce ss Stopped .

1: while transmit state = stop 0 RO/LH*

0 TCI Transmit Completed Interrupt.

1: set when a frame transmission completes with IC (bit 31 of

TDES1) asserted in the first transmit descriptor of the frame.

0 RO/LH*

LH = High Latching and cleared by writing 1.

CSR6(offset = 30h), NAR - Network access register

31~22 --- reserved

21 SF Store and forward for transmit

0: disable

1: enable, ignore the transmit threshold setting

0 R/W*

20 --- reserved

19 SQE SQE Disable

0: enable SQE function for 10BASE-T operation. The STE10/

100 provides SQE test function for 10BASE-T half duplex

operation.

1: disable SQE function.

1 R/W*

18~16 ----- reserved

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

STE10/100A

20/66

15~14 TR transmit threshold control

00: 128-bytes (100Mbps), 72-bytes (10Mbps)

01: 256-bytes (100Mbps), 96-bytes (10Mbps)

10: 512-bytes (100Mbps), 128-bytes (10Mbps)

11: 1024-bytes (100Mbps), 160-bytes (10Mbps)

00 R/W*

13 ST Stop transmit

0: stop (default)

1: start

0 R/W

12 FC Force collision mode

0: disable

1: generate collision upon transmit (for testing in loop-back

mode)

0 R/W**

11, 10 OM Operating Mode

00: normal

01: MAC loop-back, regardless of contents of XLBEN (bit 14 of

XR0, XCVR loop-back)

10,11: reserved

00 R/W**

9, 8 --- reserved

7 MM Multicast Mode

1: receive all multicast packets 0 R/W***

6 PR Promiscuous Mode

1: receive any good packet.

0: receive only the right destination address packets

1 R/W***

5 SBC Stop Back-off Counter

1: back-off counter stops when carrier is active, and resumes

when carrier is dropped.

0: back-off counter is not effected by carrier

0 R/W**

4 --- reserved

3 PB Pass Bad packet

1: receives any packets passing address filter, including runt

packets, CRC error, truncated packets. For receiving all

bad packets, PR (bit 6 of CSR6) should be set to 1.

0: filters all bad packets

0 R/W***

2 --- reserved

1 SR Start/Stop Receive

0: receive processor will enter stop state after the current

frame reception is completed. This value is effective only

when the receive processor is in the running or suspending

state. Note: In “Stop Receive” state, the P AUSE packet and

Remote Wake Up packet will not be affected and can be

received if the corresponding function is enabled.

1: receive processor will enter running state.

0 R/W

0 --- reserved

W* = only write when the transmi t proc essor sto pped.

W* * = o n l y wr i te when th e transmit and re ceiv e pr o cessor bo th stopp ed .

W*** = onl y write when the rece ive proce sso r stoppe d.

CSR7(offset = 38h), IER - Interrupt Enable Register

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

21/66

STE10/100A

31~17 --- reserved

16 NIE No rmal Interr upt E nable

1: enables all the normal interrupt bits (see bit 16 of CSR5) 0 R/W

15 AIE Abnormal Interrupt Enable

1: enables all the abnormal interrupt bits (see bit 15 of CSR5) 0 R/W

14 --- reserved

13 FBEIE Fatal Bus Error Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the fatal bus error interrupt

0 R/W

12 --- Reserved

11 GPTIE General Purpose Timer Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the general purpose timer expired interrupt.

0 R/W

10 --- Reserved

9 RWTIE Receive Watchdog Time-out Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the receive watchdog time-out interrupt.

0 R/W

8 RSIE Receive Stopped Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the receive stopped interrupt.

0 R/W

7 RUIE Receive Descriptor Unavailable Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the receive descriptor unavailable interrupt.

0 R/W

6 RCIE Receive Completed Interrupt Enable

1: this bit in conjunction with NIE (bit 16 of CSR7) will enable

the receive completed interrupt.

0 R/W

5 TUIE Transmit Under-flow Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the transmit under-flow interrupt.

0 R/W

4 --- Reserved

3 TJTTIE Transmit Jabber Timer Time-out Interrupt Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the transmit jabber timer time-out interrupt.

0 R/W

2 TD UIE Transmit Descriptor Unava ilable Interrupt Enabl e

1: this bit in conjunction with NIE (bit 16 of CSR7) will enable

the transmit descriptor unavailable interrupt.

0 R/W

1 TP SIE Transmit Proce ssor Stopp ed Interrup t Enable

1: this bit in conjunction with AIE (bit 15 of CSR7) will enable

the transmit processor stopped interrupt.

0 R/W

0 TCIE Transmit Completed Interrupt Enable

1: this bit in conjunction with NIE (bit 16 of CSR7) will enable

the transmit completed interrupt.

0 R/W

CSR8(offset = 40h), LPC - Lost packet counter

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

STE10/100A

22/66

31~17 --- Reserved

16 LPCO Lost Packet Counter Overflow

1: when lost packet counter overflow occurs. Cleared after

read.

0 RO/LH

15~0 LPC Lost Packet Counter

The counter is incremented whenever a packet is discarded as

a result of no host receive descriptors being available.

Cleared after read.

0 RO/LH

CSR9(offset = 48h), SPR - Serial port register

31~15 --- Reserved

14 SRC Serial EEPROM Read Control

When set, enables read access from EEPROM, when SRS

(CSR9 bit 11) is also set.

0 R/W

13 SWC Serial EEPROM Write Control

When set, enables write access to EEPROM, when SRS

(CSR9 bit 11) is also set.

0 R/W

12 --- Reserved

11 SRS Serial EEPROM Select

When set, enables access to the serial EEPROM (see

description of CSR9 bit 14 and CSR9 bit 13)

0 R/W

10~4 --- Reserved

3 SDO Serial EEPROM data out

This bit serially shifts data from the EEPROM to the STE10/

100.

1RO

2 SDI Serial EEPROM data in

This bit serially shifts data from the STE10/100 to the

EEPROM.

1 R/W

1 SCLK Serial EEPROM clock

High/Low this bit to provide the clock signal for EEPROM. 1 R/W

0 SCS Serial EEPROM chip select

1: selects the serial EEPROM chip. 1 R/W

CSR11(offset = 58h), TMR -General-purpose Timer

31~17 --- Reserved

16 COM Continuous Operation Mode

1: sets the general-purpose timer in continuous operating

mode.

0 R/W

15~0 GTV General-purpose Timer Value

Sets the counter value. This is a count-down counter with a

cycle time of 204us.

0 R/W

CSR13(offset = 68h), WCSR –Wake-up Control/Status Register

31 --- Reserved

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

23/66

STE10/100A

30 CRCT CRC-16 Type

0: Initial contents = 0000h

1: Initial contents = FFFFh

0 R/W

29 WP1E Wake-up Pattern One Matched Enable. 0 R/W

28 WP2E Wake-up Pattern Two Matched Enable. 0 R/W

27 WP3E Wake-up Pattern Three Matched Enable. 0 R/W

26 WP4E Wake-up Pattern Four Matched Enable. 0 R/W

25 WP5E Wake-up Pattern Five Matched Enable. 0 R/W

24-18 --- Reserved

17 LinkOFF Link Off Detect Enable. The STE10/100 will set the LSC bit of

CSR13 after it has detected that link status has transitioned

from ON to OFF.

0 R/W

16 LinkON Link On Detect Enable. The STE10/100 will set the LSC bit of

CSR13 after it has detected that link status has transitioned

from OFF to ON.

0 R/W

15-11 --- Reserved

10 WFRE Wake-up Frame Received Enable. The STE10/100 will

include the “Wake-up Frame Received” event in its set of

wake-up events. If this bit is set, STE10/100 will assert

PMEST bit of PMR1 (CR49) after STE10/100 has received a

matched wake-up frame.

0 R/W

9 MPRE Magic Packet Received Enable. The STE10/100 will include

the “Magic Packet Received” event in its set of wake-up

events. If this bit is set, STE10/100 will assert PMEST bit of

PMR1 (CR49) after STE10/100 has received a Magic packet.

Default 1 if

PM & WOL

bits of CSR

18 are both

enabled.

R/W

8 LSCE Link Status Changed Enable. The STE10/100 will include the

“Link Status Changed” event in its set of wake-up events. If

this bit is set, STE10/100 will assert PMEST bit of PMR1 after

STE10/100 has detected a link status changed event.

0 R/W

7-3 --- Reserved

2 W FR Wake-up Fram e Received ,

1: Indicates STE10/100 has received a wake-up frame. It is

cleared by writing a 1 or upon power-up reset. It is not

affected by a hardware or software reset.

X R/W1C*

1 MPR Magic Packet Received,

1: Indicates STE10/100 has received a magic packet. It is

cleared by writing a 1 or upon power-up reset. It is not

affected by a hardware or software reset.

X R/W1C*

0 LSC Link Status Changed,

1: Indicates STE10/100 has detected a link status change

event. It is cleared by writing a 1 or upon power-up reset. It

is not affected by a hardware or software reset.

X R/W1C*

R/W1C *, Rea d On ly and Writ e o n e clea r ed.

Table 6. Control/Status reg ister description

Bit # Name Descriptions Default Val RW Type

STE10/100A

24/66

Table 6. Control/Status register description

CSR14(offset = 70h), WPDR –Wake-up Pattern Data Register

Offset 31 16 15 8 7 0

0000h Wake-up pattern 1 mask bits 31:0

0004h Wake-up pattern 1 mask bits 63:32

0008h Wake-up pattern 1 mask bits 95:64

000ch Wake-up pattern 1 mask bits 127:96

0010h CRC16 of pattern 1 Reserved Wake-up pattern 1 offset

0014h Wake-up pattern 2 mask bits 31:0

0018h Wake-up pattern 2 mask bits 63:32

001ch Wake-up pattern 2 mask bits 95:64

0020h Wake-up pattern 2 mask bits 127:96

0024h CRC16 of pattern 2 Reserved Wake-up pattern 2 offset

0028h Wake-up pattern 3 mask bits 31:0

002ch Wake-up pattern 3 mask bits 63:32

0030h Wake-up pattern 3 mask bits 95:64

0034h Wake-up pattern 3 mask bits 127:96

0038h CRC16 of pattern 3 Reserved Wake-up pattern 3 offset

003ch Wake-up pattern 4 mask bits 31:0

0040h Wake-up pattern 4 mask bits 63:32

0044h Wake-up pattern 4 mask bits 95:64

0048h Wake-up pattern 4 mask bits 127:96

004ch CRC16 of pattern 4 Reserved Wake-up pattern 4 offset

0050h Wake-up pattern 5 mask bits 31:0

0054h Wake-up pattern 5 mask bits 63:32

0058h Wake-up pattern 5 mask bits 95:64

005ch Wake-up pattern 5 mask bits 127:96

0060h CRC16 of pattern 5 Reserved Wake-up pattern 5 offset

1. Off set val ue is fr om 0-255 (8-bit w i dt h).

2. To load th e whol e wak e-up f ram e fil tering informat io n, co nsec ut i ve 25 long words wri t e operation t o CS R14 s houl d be done.

25/66

STE10/100A

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

CSR15(offset = 78h), WTMR - Watchdog timer

31~6 --- Reserved

5 RWR Receive Watchdog Release. The time (in bit-times) from

sensing dropped carrier to releasing watchdog timer.

0: 24 bit-times

1: 48 bit-times

0 R/W

4 RWD Receive Watchdog Disable

0: If the received packet‘s length exceeds 2560 bytes, the

watchdog timer will expire.

1: disable the receive watchdog.

0 R/W

3 --- Reserved

2 J CLK Jabber clock

0: cut off transmission after 2.6 ms (100Mbps) or 26 ms

(10Mbps).

1: cut off transmission after 2560 byte-time.

0 R/W

1 NJ Non-Jabber

0: if jabber expires, re-enable transmit function after 42 ms

(100Mbps) or 420ms (10Mbps).

1: immediately re-enable the transmit function after jabber

expires.

0 R/W

0 JBD Jabber disab le

1: disable transmit jabber function 0 R/W

CSR16(offset = 80h), ACSR5 - Assistant CSR5(Status register 2)

31 T EIS Tran smit Early Interr upt status

Transmit early interrupt status is set to 1 when TEIE (bit 31 of

CSR17 set) is enabled and the transmitted packet is moved

from descriptors to the TX-FIFO buffer. This bit is cleared by

writing a 1.

0 RO/LH*

30 REIS Receive Early Interrupt Status.

Receive early interrupt status is set to 1 when REIE (CSR17

bit 30) is enabled and the received packet has filled up its first

receive descriptor. This bit is cleared by writing a 1.

0 RO/LH*

29 XIS Transceiver (XCVR) Interrupt Status. Formed by the logical

OR of XR8 bits 6~0. 0 RO/LH*

28 TDIS Transmit Deferred Interrupt Status. 0 RO/LH*

27 --- Reserved

26 PFR PAUSE Frame Received Interrupt Status

1: indicates receipt of a PAUSE frame while the PAUSE

function is enabled.

0 RO/LH*

25~ 23 BET Bus Error Type. This field is valid only when FBE (CSR5 bit

13, fatal bus error) is set. There is no interrupt generated by

this field.

000: parity error, 001: master abort, 010: target abort

011, 1xx: reserved

000 RO

STE10/100A

26/66

22~ 20 TS Transmit State. Reports the current transmission state only,

no interrupt will be generated.

000: stop

001: read descriptor

010: transmitting

011: FIFO fill, read the data from memory and put into FIFO

100: reserved

101: reserved

110: suspended, unavailable transmit descriptor or FIFO

overflow

111: write descriptor

000 RO

19~17 RS Receive State. Reports current receive state only, no interrupt

will be generated.

000: stop

001: read descriptor

010: check this packet and pre-fetch next descriptor

011: wait for receiving data

100: suspended

101: write descriptor

110: flush the current FIFO

111: FIFO drain, move data from receiving FIFO into memory

000 RO

16 A NISS Added norma l interrupt status summary.

1: whenever any of the added normal interrupts occur. 0 RO/LH*

15 AAISS Added Abnormal Interrupt Status Summary.

1: whenever any of the added abnormal interrupts occur. 0 RO/LH*

14~0 These bits are the same as the status register of CSR5, and

are accessible through either CSR5 or CSR16.

LH* = High Latching and clea red by writing 1.

CSR17(offset = 84h), ACSR7- Assistant CSR7(Interrupt enable register 2)

31 T EIE Transmit Early Interr upt Enable 0 R/W

30 REIE Receive Early Interrupt Enable 0 R/W

29 XIE Transceiver (XCVR) Interrupt Enable 0 R/W

28 TDIE Transmit Deferred Interrupt Enable 0 R/W

27 --- Reserved

26 PFRIE PAUSE Frame Received Interrupt Enable 0 R/W

25~17 --- Reserved

16 ANISE Added Normal Interrupt Summary Enable.

1: adds the interrupts of bits 30 and 31 of ACSR7 (CSR17) to

the normal interrupt summary (bit 16 of CSR5).

0 R/W

15 AAIE Added Abnormal Interrupt Summary Enable.

1: adds the interrupt of bits 27, 28, and 29 of ACSR7 (CSR17)

to the abnormal interrupt summary (bit 16 of CSR5).

0 R/W

14~0 These bits are the same as the interrupt enable register of

CSR7, and are accessible through either CSR7 or CSR16.

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

27/66

STE10/100A

CSR18(offset = 88h), CR - Command Register, bit31 to bit16 automatically recall from EEPROM

31 D3CS D3cold power state wake up Support. If this bit is reset then

bit 31 of PMR0 will be reset to ‘0’. If this bit is asserted and an

auxiliary power source is detected then bit 31 of PMR0 will be

set to ‘1’.

from

EEPROM

R/W

30-28 AUXCL Aux. Current Load. These three bits report the maximum

3.3Vaux current requirements for STE10/100 chip. If bit 31 of

PMR0 is ‘1’, the default value is 111b, which means the

STE10/100 need 375 mA to support remote wake-up in

D3cold power state. Otherwise, the default value is 000b,

which means the STE10/100 does not support remote wake-

up from D3cold power state.

000b

from

EEPROM

R/W

27-24 --- Reserved

23 4LEDmode

_on This bit is used to control the LED mode selection.

If this bit is reset, mode 1 (3 LEDs) is selected; the LEDs

definition is:

100/10 speed

Link/Activity

Full Duplex/Collision

If this bit is set, mode 2 (4 LEDs) is selected; the LEDs

definition is:

100 Link

10 Link

Activity

Full Duplex/Collision

from

EEPROM

R/W

22, 21 RFS Receive FIFO size control

11: 1K bytes

10: 2K bytes

01,00: reserv ed

from

EEPROM

R/W

20 --- Reserved

19 PM Power Management. Enables the STE10/100 Powe r

Management abilities. When this bit is set into “0” the STE10/

100 will set the Cap_Ptr register to zero, indicating no PCI

compliant power management capabilities. The value of this

bit will be mapped to NC (CR1 bit 20). In PCI Power

Management mode, the Wake Up Frames include “Magic

Packet”, “Unicast”, and “Muliticast”.

from

EEPROM

18 WOL Wake on LAN mode enable. When this bit is set to ‘1’, then

the STE10/100 enters Wake On LAN mode and enters the

sleep state.

Once the STE10/100 enters the sleep state, it remains there

until: the Wake Up event occurs, the WOL bit is cleared, or a

reset (software or hardware) happens.

In Wake On LAN mode the Wake-Up frame is “Magic Packet”

only.

from

EEPROM

R/W

17~7 --- Reserved

6 RWP Reset Wake-up Pattern Data Register Pointer 0 R/W

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

STE10/100A

28/66

5 PAUSE Disable or enable the PAUSE function for flow control. The

default value of PAUSE is determined by the result of Auto-

Negotiation. The driver software can overwrite this bit to

enable or disable it after the Auto-Negotiation has completed.

0: PAUSE function is disabled.

1: PAUSE function is enabled

Depends

on the

result of

Auto-

Negotiation

R/W

4 RTE Receive Threshold Enable.

1: the receive FIFO threshold is enabled.

0: disable the receive FIFO threshold selection in DRT (bits

3~2), and the receive threshold is set to the default 64 bytes.

0 R/W

3~2 DRT Drain Receive Threshold

00: 32 bytes (8 DW)

01: 64 bytes (16 DW)

10: store-and -forward

11: reserved

01 R/W

1 SINT Software interrupt. 0 R/W

0 ATUR 1: enable automatically transmit-underrun recovery. 0 R/W

CSR19(offset = 8ch) - PCIC, PCI bus performance counter

31~16 CLKCNT The number of PCI clocks from read request asserted to

access completed. This PCI clock count is accumulated for all

the read command cycles from the last CSR19 read to the

current CSR1 9 read.

0RO*

15~8 --- reserved

7~0 DWCNT The number of double words accessed by the last bus master .

This double word count is accumulated for all bus master data

transactions from the last CSR19 read to the current CSR19

read.

0RO*

RO* = Read onl y and cleared by reading.

CSR20 (offset = 90h) - PMCSR, Power Management Command and Status (The same register value mapping to

CR49-PMR1.)

31~16 --- reserved

15 PMES PME_Status. This bit is set whenever the STE10/100 detects

a wake-up event, regardless of the state of the PME-En bit.

Writing a “1” to this bit will clear it, causing the STE10/100 to

deassert PME# (if so enabled). Writing a “0” has no effect.

0RO

14,13 DSCAL Data_Scale. Indicates the scaling factor to be used when

interpreting the value of the Data register. This field is

required for any function that implements the Data register.

The STE10/100 does not support Data register and

Data_Scale.

00b RO

12~9 DSEL Data_Select. This four bit field is used to select which data is

to be reported through the Data register and Data_Scale field.

This field is required for any function that implements the Data

The STE10/100 does not support Data_select.

0000b RO

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

29/66

STE10/100A

8 PME_En PME_En. When set, enables the STE10/100 to assert PME#.

When cleared, disables the PME# assertion. 0RO

7~2 --- reserved. 000000b RO

1,0 PWRS PowerState, This two-bit field is used both to determine the

current power state of the STE10/100 and to set the STE10/

100 into a new power state. The definition of this field is given

below.

00b - D0

01b - D1

10b - D2

11b - D3hot

If software attempts to write an unsupported state to this field,

the write operation will complete normally on the bus, but the

data is discarded and no state change occurs.

00b RO

CSR23(offset = 9ch) - TXBR, transmit burst count / time-out

31~21 --- reserved

20~16 TB CNT Transmit Burst Count

Specifies the number of consecutive successful transmit burst

writes to complete before the transmit completed interrupt will

be generated.

0 R/W

11~0 TTO Transmit Time-Out = (deferred time + back-off time).

When TDIE (ACSR7 bit 28) is set, the timer is decreased in

increments of 2.56us (@100M) or 25.6us (@10M). If the timer

expires before another packet transmit begins, then the TDIE

interrupt will be generated.

0 R/W

CSR24(offset = a0h) - FROM, Flash ROM(also the boot ROM) port

31 bra16_on This bit is only valid when 4 LEDmode_on (CSR18 bit 23) is

set. In this case, when bra16_on is set, pin 87 functions as

brA16; otherwise it functions as LED pin – fd/col.

1 R/W

30~28 --- reserved

27 REN Read Enable. Clear if read data is ready in DATA, bit7-0 of

FROM. 0 R/W

26 WEN Write Enable. Cleared if write completed. 0 R/W

25 --- reserved

24~8 ADDR Flash ROM address 0 R/W

7~0 DATA Read/Write data of flash ROM 0 R/W

CSR25(offset = a4h) - PAR0, physical address register 0, automatically recalled from EEPROM

31~24 PAB3 physical address byte 3 From

EEPROM R/W

23~16 PAB2 physical address byte 2 From

EEPROM R/W

15~8 PAB1 physical address byte 1 From

EEPROM R/W

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

STE10/100A

30/66

7~0 PAB0 physical address byte 0 From

EEPROM R/W

CSR26(offset = a8h) - PAR1, physical address register 1, automatically recalled from EEPROM

31~24 --- reserved

23~16 --- reserved

15~8 PAB5 physical address byte 5 From

EEPROM R/W

7~0 PAB4 physical address byte 4 From

EEPROM R/W

For exam p le, p h ysic al ad d r ess = 00-00 -e8-11-2 2-33

PAR0= 11 e8 00 0 0

PAR1= XX XX 33 22

PAR0 and PAR1 are readable, but can be writt en only if the receive sta te is in stopped (CSR5 bits 19-17=00 0) .

CSR27(offset = ach) - MAR0, multicast address register 0

31~24 MAB3 multicast address byte 3 (hash table 31:24) 00h R/W

23~16 MAB2 multicast address byte 2 (hash table 23:16) 00h R/W

15~8 MAB1 multicast address byte 1 (hash table 15:8) 00h R/W

7~0 MAB0 multicast address byte 0 (hash table 7:0) 00h R/W

CSR28(offset = b0h) - MAR1, multicast address register 1

31~24 MAB7 multicast address byte 7 (hash table 63:56) 00h R/W

23~16 MAB6 multicast address byte 6 (hash table 55:48) 00h R/W

15~8 MAB5 multicast address byte 5 (hash table 47:40) 00h R/W

7~0 MAB4 multicast address byte 4 (hash table 39:32) 00h R/W

MA R0 an d MAR1 ar e readab le , but can b e writ ten onl y if the receive state is in sto p ped (CSR5 bit19- 17=000).

Table 6. Control/Status register description

Bit # Name Descriptions Default Val RW Type

31/66

STE10/100A

5.3 Trans ceiver(X CV R) Registers

There are 11 16-bit regi sters supporting the trans ceiver port ion of STE10/100, incl uding 7 basic regi sters de-

fined according to clause 22 “Reconciliation Sublayer and Media Independent Interface” and c lause 28 “Phy si-

cal Layer link signaling for 10 Mb/s and 100 Mb/s Auto-Negotiation on twisted pair” of the IEEE802.3u standard.

In addition, 4 special registers are provided for advanced chip control and status.

Note: 1. Since only Double Word access is supported for Register R/W in the STE10/100, the higher word(bit 31~16) of the XCVR registers

(XR0~XR10) shou l d be i g nored.

Table 7. Transceiver regi sters list

Offset from

base address

of CSR Reg. Index Name Register Descriptions

b4h XR0 XC R X CVR Contr ol Register

b8h XR1 XSR XCVR Statu s Register

bch XR2 PID1 PHY Identifier 1

c0h XR3 PID2 PHY Identifier 2

c4h XR4 ANA Auto-N egotia tion Adver tisem ent Registe r

c8h XR5 ANLPA Auto-Negotiation Link Partner Ability Register

cch XR 6 ANE Auto-N egotia tion Expan sion Regis ter

d0h XR7 XMC XCVR Mode Control Register

d4h XR8 XCIIS XCVR Configuration Information and Interrupt Status Register

d8h XR9 XIE XCVR Interrupt Enable Register

dch XR10 100CTR 100BASE-TX PHY Control/Status Register

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

XR0(offset = b4h) - XCR, XCVR Control Register. The default value is chosen as listed below.

15 XRST Transceiver Reset control.

1: reset transceiver. This bit will be cleared by STE10/100 after

transceiver reset has completed.

0 R/W

14 XLBEN Transceiver loop-back mode select.

1: transceiver loop-back mode is selected. OM (CSR6 bits

11,10) of must contain 00.

0 R/W

13 SPSEL Network Speed select. This bit will be ignored if Auto-

Negotiation is enabled (ANEN, XR0 bit 12).

1:100Mbps is selected.

0:10Mbps is selected.

1 R/W

12 ANEN Auto-Negotiation ability control.

1: Auto-Negotiation function is enabled.

0: Auto-Negotiation is disabled.

1 R/W

STE10/100A

32/66

11 PDEN Power down mode control.

1: transceiver power-down mode is selected. In this mode, the

STE10/100 transceivers are turned off.

0 R/W

10 --- reserved 0 RO

9 RSAN Re-Start Auto-Negotiation process control.

1: Auto-negotiation process will be restarted. This bit will be

cleared by STE10/100 after the Auto-negotiation has

restarted.

0 R/W

8 DPSEL Full/Half duplex mode select.

1: full duplex mode is selected. This bit will be ignored if Auto-

Negotiation is enabled (ANEN, XR0 bit 12).

0 R/W

7 COLEN Collision test control.

1: collision test is enabled. 0 R/W

6~0 --- reserved 0 RO

R/W = Re ad/Write able. R O = Read Only.

XR1(offset = b8h) - XSR, XCVR Status Register. All the bits of this register are read only.

15 T4 100BASE-T4 ability.

Always 0, since STE10/100 has no T4 ability. 0RO

14 TXFD 100BASE-TX full duplex ability.

Always 1, since STE10/100 has 100BASE-TX full duplex

ability.

1RO

13 TXHD 100BASE-TX half duplex ability.

Always 1, since STE10/100 has 100BASE-TX half duplex

ability.

1RO

12 10FD 10BASE-T full duplex ability.

Always 1, since STE10/100 has 10Base-T full duplex ability. 1RO

11 10HD 10BASE-T half duplex ability.

Always 1, since STE10/100 has 10Base-T half duplex ability. 1RO

10~6 --- reserved 0 RO

5 ANC Auto-Negotiation Completed.

0: Auto-Negotiation process incomplete.

1: Auto-Negotiation process complete.

0RO

4 RF Result of remote fault detection.

0: no remote fault condition detected.

1: remote fault condition detected.

0 RO/LH*

3 AN Auto-Negotiation ability.

Always 1, since STE10/100 has Auto-negotiation ability. 1RO

2 LINK Link status.

0: a link failure condition occurred. Readin clears this bit.

1: valid link established.

0 RO/LL*

1 J AB Ja bber detec tion.

1: jabber condition detected (10Base-T only). 0 RO/LH*

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

33/66

STE10/100A

0 EXT Extended register support.

Always 1, since STE10/100 supports extended register 1RO

LL* = Latching Low and clear by read. LH* = Latching High and clea r by read .

XR2(offset = bch) - PID1, PHY identifier 1

15~0 PHYID1 Part one of PHY Identifier.

Assigned to the 3rd to 18th bits of the Organizationally Unique

Identifier (The ST OUI is 0080E1 hex).

1C04h RO

XR3(offset = c0h) - PID2, PHY identifier 2

15~10 PHYID2 Part two of PHY Identifier.

Assigned to the 19th to 24th bits of the Organizationally Unique

Identifier (OUI).

000000b RO

9~4 MODEL Model number of STE10/100.

6-bit manufacturer’s model number. 000001b RO

3~0 REV Revision number of STE10/100.

4-bits manufacturer’s revision number. 0000b RO

XR4(offset = c4h) - ANA, Auto-Negotiation Advertisement

15 NXTPG Next Page ability.

Always 0; STE10/100 does not provide next page ability. 0RO

14 --- reserved

13 RF Remote Fault function.

1: remote fault function present 0 R/W

12,11 --- reserved

10 FC Flow Control function Ability.

1: supports P AUSE operation of flow control for full duplex link. 1 R/W

9 T4 100BASE-T4 Ability.

Always 0; STE10/100 does not provide 100BASE-T4 ability. 0RO

8 TXF 100BASE-TX Full duplex Ability.

1: 100Base-TX full duplex ability supported 1 R/W

7 TXH 100BASE-TX Half duplex Ability.

1: 100Base-TX ability supported. 1 R/W

6 10F 10BASE-T Full duplex Ability.

1: 10Base-T full duplex ability supported. 1 R/W

5 10H 10BASE-T Half duplex Ability.

1: 10Base-T ability supported. 1 R/W

4~0 SF Select field. Default 00001=IEEE 802.3 00001 RO

XR5(offset = c8h) - ANLP, Auto-Negotiation Link Partner ability

15 LPNP Link partner Next Page ability.

0: link partner without next page ability.

1: link partner with next page ability.

0RO

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

STE10/100A

34/66

14 LPACK Received Link Partner Acknowledge.

0: link code word not yet received.

1: link partner successfully received STE10/100’s link code

word.

0RO

13 LPRF Link Partner’s Remote fault status.

0: no remote fault detected.

1: remote fault detected.

0RO

12,11 --- reserved 0 RO

10 LPFC Link Partner’s Flow control ability.

0: link partner without PAUSE function ability.

1, link partner with PAUSE function ability for full duplex link.

0RO

9 LPT4 Link Partner’s 100BASE-T4 ability.

0: link partner without 100BASE-T4 ability.

1: link partner with 100BASE-T4 ability.

0RO

8 LPTXF Link Partner’s 100BASE-TX Full duplex ability.

0: link partner without 100BASE-TX full duplex ability.

1: link partner with 100BASE-TX full duplex ability.

0RO

7 LPTXH Link Partner’s 100BASE-TX Half duplex ability.

0: link partner without 100BASE-TX.

1: link partner with 100BASE-TX ability.

0RO

6 LP10F Link Partner’s 10BASE-T Full Duplex ability.

0: link partner without 10BASE-T full duplex ability.

1: link partner with 10BASE-T full duplex ability.

0RO

5 LP10H Link Partner’s 10BASE-T Half Duplex ability.

0: link partner without 10BASE-T ability.

1: link partner with 10BASE-T ability.

0RO

4~0 LPSF Link partner select field. Default 00001=IEEE 802.3. 00001 RO

XR6(offset = cch) - ANE, Auto-Negotiation expansion

15~5 --- reserved 0 RO

4 PDF Parallel detection fault.

0: no fault detected.

1: a fault detected via parallel detection function.

0 RO/LH*

3 LPNP Link Partner’s Next Page ability.

0: link partner without next page ability.

1: link partner with next page ability.

0RO

2 NP STE10/100’s next Page ability.

Always 0; STE10/100 does not support next page ability. 0RO

1 PR Page Received.

0: no new page has been received.

1: a new page has been received.

0 RO/LH*

0 LPAN Link Partner Auto-Negotiation ability.

0: link partner has no Auto-Negotiation ability.

1: link partner has Auto-Negotiation ability.

0RO

LH = High Latching and clear ed by readi ng.

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

35/66

STE10/100A

XR7(offset = d0h) - XMC, XCVR Mode control

15~12 --- reserved 0 RO

11 LD Long Distance mode of 10BASE-T.

0: normal squelch level.

1: reduced 10Base-T squelch level for extended cable length.

0 R/W

10~0 --- reserved 0 RO

XR8(offset = d4h) - XCIIS, XCVR Configuration information and Interrupt Status

15~10 ---- reserved 0 RO

9 SPEED Speed config uratio n setting.

0: the speed is 10Mb/s.

1: the speed is 100Mb/s.

0RO

8 DUPLEX Du plex config urati on setting.

0: the duplex mode is half.

1: the duplex mode is full.

0RO

7 PAUSE PAUSE function configuration setting for flow control.

0: PAUSE function is disabled.

1: PAUSE function is enabled

0RO

6 ANC Auto-Negotiation Completed Interrupt.

0: Auto-Negotiation has not completed yet.

1: Auto-Negotiation has completed.

0 RO/LH*

5 RFD Remote Fault Detected Interrupt.

0: there is no remote fault detected.

1: remote fault is detected.

0 RO/LH*

4 LS Link Fail Interrupt.

0: link test status is up.

1: link is down.

0 RO/LH*

3 ANAR Auto-Negotiation Acknowledge Received Interrupt.

0: there is no link code word received.

1: link code word is receive from link partner.

0 RO/LH*

2 P DF Parallel Detection Fault Interr upt.

0: there is no parallel detection fault.

1: parallel detection is fault.

0 RO/LH*

1 ANPR Auto-Negotiation Page Received Interrupt.

0: there is no Auto-Negotiation page received.

1: auto-negotiation page is received.

0 RO/LH*

0 REF Receive Error full Interrupt.

0: the receive error number is less than 64.

1: 64 error packets is received.

0 RO/LH*

LH = High Latching and clear ed by readi ng.

XR9(offset = d8h) - XIE, XCVR Interrupt Enable Register

15~7 --- reserved

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

STE10/100A

36/66

6 ANCE Auto-Negotiation Completed interrupt Enable.

0: disable Auto-Negotiation completed interrupt.

1: enable auto-negotiation complete interrupt.

0 R/W

5 RFE Remote Fault detected interrupt Enable.

0: disable remote fault detection interrupt.

1: enable remote fault detection interrupt.

0 R/W

4 LDE Link Down interrupt Enable.

0: disable link fail interrupt.

1: enable link fail interrupt.

0 R/W

3 ANAE Auto-Negotiation Acknowledge interrupt Enable.

0: disable link partner acknowledge interrupt

1: enable link partner acknowledge interrupt.

0 R/W

2 P DFE Pa rallel Detection Fault interr upt Enable .

0: disable fault parallel detection interrupt.

1: enable fault parallel detection interrupt.

0 R/W

1 ANPE Auto-Negotiation Page Received interrupt Enable.

0: disable Auto-Negotiation page received interrupt.

1: enable Auto-Negotiation page received interrupt.

0 R/W

0 REFE RX_ERR full interrupt Enable.

0: disable rx_err full interrupt.

1: enable rx_err interrupt.

0 R/W

XR10(offset = dch) - 100CTR, 100BASE-TX Control Register

15,14 --- reserved

13 DISRER Disable the RX_ERR counter.

0: the receive error counter - RX_ERR is enabled.

1: the receive error counter - RX_ERR is disabled.

0 R/W

12 ANC Auto-Negotiation completed. This bit is the same as bit 5 of

XR1.

0: the Auto-Negotiation process has not completed yet.

1: the Auto-Negotiation process has completed.

0RO

11 RXVPP Select peak to peak voltage of receive.

0: receive voltage peak to peak 1.0 VPP

1: receive voltage peak to peak 1.4 VPP.

0 R/W

10 --- reserved

9 ENRLB Enable remote loop-back function.

1: enable remote loop-back (CSR6 bits 11 and 10 must be 00). 0 R/W

8 ENDCR Enable DC restoration.

0: disable DC restoration.

1: enable DC restoration.

1 R/W

7 ENRZI Enable the conversions between NRZ and NRZI.

0: disable the data conversion between NRZ and NRZI.

1: enable the data conversion of NRZI to NRZ in receiving and

NRZ to NRZI in transmitting.

1 R/W

6 --- reserved.

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

37/66

STE10/100A

5.4 Des criptors and Buffer Manag ement

The STE10/100 provides receive and transmit descriptors for packet buffering and management.

5.4.1 Receive descriptor

Table 9. Receive Descriptor Table

31 0

No te : 1. Des criptor s and rec ei ve buffers a ddres ses must be l ongword alig ned

5 ISOTX T ransmit Isolation. When 1, isolate from MII and tx+/-. This bit

must be 0 for normal operation 0 R/W

4~2 CMODE Reports current transceiver operating mode.

000: in auto-negotiation

001: 10Base-T half duplex

010: 100Base-TX half duplex

011: reserved

100: reserved

101: 10Base-T full duplex

110: 100Base-TX full duplex

111: isolation, auto-negotiation disable

000 RO

1 DISMLT Disable MLT3.

0: the MLT3 encoder and decoder are enabled.

1: the MLT3 encoder and decoder are bypassed.

0 R/W

0 DISCRM Disable Scramble.

0: the scrambler and de-scrambler is enabled.

1: the scrambler and de-scrambler are disabled.

0 R/W

RDES0 Own Status

RDES1 --- Control Buffer2 byte-count Buffer1 byte-count

RDSE2 Buffer1 address (DW boundary)

RDSE3 Buffer2 address (DW boundary

Table 8. Transcei ver registers Descript ions

Bit # Name Descriptions Default Val RW Type

STE10/100A

38/66

Table 10. Receive Descriptor Descriptions

Bit# Name Descriptions

RDES0

31 OWN Own bit

1: indicates that newly received data can be put into this descriptor

0: Host has not yet processed the received data currently in this descriptor.

30-16 FL Frame length, including CRC. This field is valid only in a frame’s last descriptor.

15 ES Error summary. Logical OR of the following bits:

0: overflow

1: CRC error

6: late collision

7: frame too long

11: runt packet

14: descriptor error

This field is valid only in a frame’s last descriptor.

14 DE Descriptor error. This bit is valid only in a frame’s last descriptor.

1: the current valid descriptor is unable to contain the packet being currently received. The

packet is truncated.

13-12 DT Data type.

00: normal

01: MAC loop-back

10: Tr ansce iver loop-b ack

11: remote loop-back

These bits are valid only in a frame’s last descriptor.

11 RF Runt frame (packet length < 64 bytes). This bit is valid only in a frame’s last descriptor.

10 MF Multicast frame. This bit is valid only in a frame’s last descriptor.

9 FS First descriptor.

8 LS Last descriptor.

7 TL Packet Too Long (packet length > 1518 bytes). This bit is valid only in a frame’s last descriptor.

6 CS Late collision. Set when collision is active after 64 bytes. This bit is valid only in a frame’s last

descriptor

5 FT Frame type. This bit is valid only in a frame’s last descriptor.

0: 802.3 type

1: Ethernet type

4 RW Receive watchdog (refer to CSR15, bit 4). This bit is valid only in a frame’s last descriptor.

3 reserved Default = 0

2 DB Dribble bit. This bit is valid only in a frame’s last descriptor

1: Packet length is not integer multiple of 8-bit.

1 CE 1: CRC error. This bit is valid only in a frame’s last descriptor

0 OF 1: Overflow. This bit is valid only in a frame’s last descriptor

RDES1

31~26 --- reserved

25 RER Receive end of ring. Indicates this descriptor is last, return to base address of descriptor

39/66

STE10/100A

5.4.2 Transmit Descriptor

Table 11. Transmit Descr iptor Table

31 0

Note: 1. Descriptor addresses must be longword alignment

24 RCH Second address chain

Used for chain structure, indicating the buffer 2 address is the next descriptor address. Ring

mode takes precedence over chained mode

23~22 --- reserved

21~11 RBS2 Buffer 2 size (DW boundary)

10~ 0 RBS1 Buffer 1 size (DW boundary)

RDES2

31~0 RBA1 Receive Buffer Address 1. This buffer address should be double word aligned.

RDES3

31~0 RBA2 Receive Buffer Address 2. This buffer address should be double word aligned.

TDES0 Own Status

TDES1 Control Buffer2 byte-count Buffer1 byte-count

TDSE2 Buffer1 address

TDSE3 Buffer2 address

Table 12. Transmit Descr iptor Descr iptions

Bit# Name Descriptions

TDSE0

31 OWN Own bit

1: Indicates this descriptor is ready to transmit

0: No transmit data in this descriptor.

30-24 --- Reserved

23-22 UR Under-run count

21-16 --- Reserved

15 ES Error summary. Logical OR of the following bits:

1: under-run error

8: excessive collision

9: late collision

10: no carrier

11: loss carrier

14: jabber time-out

14 TO Transmit jabber time-out

Table 10. Receive Descriptor Descriptions

Bit# Name Descriptions

STE10/100A

40/66

13-12 ----- Reserved

11 LO Loss of carrier

10 NC No carrier

9 LC Late collision

8 EC Excessive collision

7 HF Heartbeat fail

6-3 CC Collision count

2 ----- Reserved

1 UF Under-run error

0 DE Deferred

TDES1

31 IC Interrupt completed

30 LS Last descriptor

29 FS First descriptor

28,27 --- Reserved

26 AC Disable add CRC function

25 TER End of Ring

24 TCH 2nd address chain. Indicates that the buffer 2 address is the next descriptor address

23 DPD Disable padding function

22 --- Reserved

21-11 TBS2 Buffer 2 size

10-0 TBS1 Buffer 1 size

TDES2

31~0 BA1 Buffer Address 1. No alignment limitations imposed on the transmission buffer address.

TDES3

31~0 BA2 Buffer Address 2. No alignment limitations imposed on the transmission buffer address.

Table 12. Transmit Descr iptor Descr iptions

Bit# Name Descriptions

41/66

STE10/100A

6.0 FUNCTIONAL DESCRIPTIONS

6. 1 Initializat ion Flow

Figure 4. Initialization Flow of STE10/100

Search NIC

Get base IO address

Get IRQ value

Reset MAC (CSR0)

Reset PHY (XR0)

Need set

media type?

Read EEPROM from CSR9

Set Physical adress (CSR25, 26)

Need set

Multicast?

(Force Media)

Program the media

type to XR0

Yes

Set Multicast address

table (CSR27, 28)

Yes

Prepare Transmit descriptor and buffer

Prepare Receive descriptor and buffer

Install NIC IS R fu n ctio n

Ope n NIC int e rrupt

Enable Tx & Rx functions

END

STE10/100A

42/66

6.2 Network Packet Buffer Management

6.2.1 Descrip tor Stru ctur e Type s

During normal networ k transmit operati ons, the STE10/100 transfers the data packets from transmit buffers in

the host’s m emory to the STE10/100’s transmit FIFO. For receive operations, the STE10/100 transfers the data

packet from its receive FIFO to receive buffers in the host’s memory. The STE10/100 makes use of descriptors,

data structures which are built in host memory and contain pointers to the transmit and receive buffers and main-

tain packet and frame parameters, status, and other information vital to controlling network operation.

There are two types of s truc tures employed to group descr iptors, the

Ring

and

the

Chain

, both support ed by

the STE10/100 and shown below. The selection of structure type is controlled by RCH (RDES1 bit 24) and TCH

(TD ES1 bit 24).

The transmit and receive buffers reside in the host’s memory . Any buffer can contain either a complete or partial

packet. A buffer may not contain more than one packet.

■Ring structure: There are two buffers per descriptor i n the ring structure. Support receive early interrupt .

Figure 5. Ring structure of frame buffer

own

Data Buffer

Length 1

Data

Data Length 2

B uffe r1 po int er

B uffe r2 po int er

Length 2 Length 1

Descriptor

Descriptor Pointer

CSR3 or CSR4

End of Ring

43/66

STE10/100A

■Chain structure: There is only one buffer per descriptor in chain structure.

Figure 6. Chain structure of frame buffer

own

Data Buffer

Lengt h 1

Data

Data Length 2

Buffer1 pointer

Next pointer

Length 1---

own

Buffer1 pointer

Next pointer

Length 2---

own

Buff er1 po inter

Next pointer

Length 3---

Data Lengt h 3

Descriptor

Descriptor Po inter

CSR3 or CSR4

STE10/100A

44/66

6.2.2 Descrip tor Man agement

O WN bit = 1, ready for network side access

O WN bit = 0, ready for host side access

■Transmit Descriptors

Figure 7. Transmit descriptor management

Buffer 1 pointer

Buffer 2 pointer

Descriptor Ring

Dat a Buffer

data

end of ring

Length 1Length 2

acket1

acket2

next packet to be transmitted

own bit=1,

Packet 1 and pack e t 2

are ready to transmit

empty descri ptor pointer

•

45/66

STE10/100A

■Receive Descriptors

Figure 8. Receive des crip tor man agem e nt

Data

end of ring

Packet 1

Packet 2

own bit=1,

next descriptor ready

for incoming packet

filled descriptor pointer

Packet 2

•

STE10/100A

46/66

6.3 Transmit Scheme and Transm it Earl y Interrup t

6.3.1 T ransmit flow

Figure 9. The flow of packet transmit is shown as below.

Own = 1

Initialize descriptor

Place da ta in host me mor y

Set Own bit to 1

Wr ite Tx demand pol l co m mand

Transf er dat a t o Tx FIFO

Exit STE10/100

che cks des c r iptor

Deferring OR data less

than Tx threshold?

Transmit data

across line

Collision

occurred?

Wri te descr iptor

Generate interrupt

Back-off

Own = 0

47/66

STE10/100A

6.3.2 Transmit pre-fetch data flow

■Transmit FIFO size=2K-byte

■two packets in the FIFO at the same time

■meet the transmit min. back-to-back

Fi gure 10 . Transm i t data f l ow of pre -fet ch data

6.3.3 Tra nsm i t early int erru pt S cheme

Figure 11. Transm it norm al interru pt and early interr upt comp ari son

place the 1st packet data into host memory

issue transmit deman d

FIFO-to-host memory operation (1st packet)

time

Transmit enable

place the 2nd packet data into host memory check the next

packet

check point

FIFO-to-host memory operation (2nd packet)

transmit threshold

place the 3rd packet data into host memory

1st packet is

transmitted, check

the 3rd pac ket

FIFO-to-host memory operation (3rd packet)

IFG

check point

1s t packet 2nd pa cket

: handled by driver : handl ed by S TE10/1 00

Host to TX-FIFO Memory

Operation

T rans mit d ata from FIFO t o Media

Normal In terru pt after Transmi t

Completed

Driver return buffer to upper layer

Early Interrupt after Host to TX-

FIFO Operation Completed

Driver return buffer to upper layer

The saved time when transmit

early interrupt is im plemented

time

: handled by STE10/100

: handled by driver

STE10/100A

48/66

6.4 Rec eive scheme and Recei ve earl y interrupt scheme

The following figure shows the difference of timing without early interrupt and with early interrupt.

Figure 12. Receive da ta flow (without early interrup t and with early interrup t)

Figure 13. Detailed Receive Ear ly interrupt flow

: with early interr upt

: without early interrupt

incomi ng packet

receive FIFO operation

FIFO-to-host memory operat ion

interrupt

dri ver read heade r

highe r layer process

driver read the rest data

time

receive early interrupt

driv er read hea der( early)

higher layer process(early)

driv er read t he rest data

finish time

FIFO- to- host m em or y

time

re ceiv e early

driver read

higher layer

driver read th e rest finish

1st

descriptor

full 2nd descriptor

The size of 1st

de s cr iptor is

pro gra mmed as the

header si ze in

advance

issue 2nd

interrupt at end

of pa cke t

49/66

STE10/100A

6.5 Network Operation

6.5.1 MAC Operation

The MAC (Media Access Control) portion of STE10/100 incorporates the essential protocol requirements for op-

erating as an IEEE802.3 and Ethernet compliant node.

■Format

*No te : I f padd i ng i s disabled (TDE S1 bit 23), the dat a fiel d m ay be sh orter than 46 bytes.

■Transmit Data Encapsulation

The differences between transmit data encapsulation and a MAC frame while operating in 100BASE-

TX mode are listed as follows:

1. The first byte of the preamble is replaced by the JK code according to IEE802.3u, clause 24.

2. After the CRC field of the MAC frame, the STE10/100 will insert the TR code according to IEE802.3u,

clause 24.

■Receive Data Decap sulation

When o perati ng i n 100BASE-TX mode the STE10/100 detects a JK code in a preamble as well as a TR

code at the packet end. If a JK code is not detected, the STE10/100 will abort the reception of the frame

and wait for a new JK code dete ction . If a TR code is not detected, the STE10/1 00 will report a CRC

error.

■Deferring

The Inter-Frame Gap (IFG) time is divided into two parts:

1.I FG1 time (64-bit ti me): If a carrier is detected on the medium during this time, the STE10/100 will

reset the IFG1 time counter and restart to m oni tor the channel for an idle again.

2.IFG2 time (32-bit time): After counting the IFG2 time the STE10/100 will access the channel even

though a carrier has been sensed on the network.

■Collision Hand lin g

The scheduling of re-transmissions are determined by a controlled randomization process called

“truncated binary expone ntial back-o ff”. At the end of enforcin g a collision (jamming), the STE10/10 0

delays before attem pting to re-transmit the packet. The delay is an integer multiple of slot time. The

number of slot times to delay before the nth re-transmission attempt is chosen as a uniformly distributed

integer r in the range:

0 · r

where k = min(n, 10)

Field Description

Preamble A 7-byte field of (10101010b)

Start Frame Delimiter A 1-byte field of (10101011b)

Destination Address A 6-byte field

Source Address A 6-byte field

Length/Type A 2-byte field indicated the frame is in IEEE802.3 format or Ethernet format.

IEEE802.3 format: 0000H ~ 05DCH for Length field

Ethernet format: 05DD ~ FFFFH for Type field

Data *46 ~ 1500 bytes of data information

CRC A 32-bit cyclic redundancy code for error detection

STE10/100A

50/66

6.5.2 Transceiver Operation

The transceiver portion of the STE10/100 integrates the IEEE802.3u compliant functions of PCS (physical cod-

ing sub-layer), PMA (physical medium attachment) sub-layer, and PM D (physical medium dependent) sub-layer

for 100BAS E-TX, and the IEE E802.3 compliant functions of Manchester encoding/decoding and transceiver for

10BA SE-T. All the functions and operating schemes are described in the following sections.

■100BA SE-TX Tra nsmi t Opera tion

For 100BASE-TX transmissions, the ST E10/100 transceiver provides the transmission functions of

PCS, PMA, and PMD for enc oding of MII data nibbles into five-bit code-groups (4B/5B), scram bling,

serialization of scrambled code-groups, converting the serial NRZ code into NRZI code, converting the

NRZI code into MLT3 code, and then driving the MLT3 code into the category 5 Unshielded Twisted

Pair cable through an isolation transformer with the turns ratio of 1. 414 : 1.

■Data code-groups Encoder: In normal MII mode applications, the transceiver receives nibble type 4B

data via the TxD0~3 inputs of the MII. These inputs are sampled by the transceiver on the rising edge

of Tx-clk and passed to the 4B/5B encoder to gene rate the 5B code-group used by 100B ASE-TX .

■Idle c ode - gr o up s : In order to establish and maintain the clock synchronization, the transceiver must

keep transmitting signals to medium. The transceiver will generate Idle code-group s for transmission

when there is no actual data to be sent by MAC.

■Start-of-Stream Delimiter-SSD (/J/K/): In a t ransmissio n stream, the first 16 nibbles comprise the

MAC preamble . In order to let a netwo rk partner delineate the boundary of a data transm ission

sequence and to authenticate carrier events, the transceiver will replace the first 2 nibbles of the MAC

preamble with /J/K/ code-groups.

■End-of-Stream Delimiter- ESD (/T/R/): In order to indicate the termination of normal data

transmissions, the transceiver will insert 2 nibbles of /T/R/ code-group after the last nibble of the FCS.

■Scrambling: All the encoded data (including the idle, SSD, and ESD code-groups) is passed to the data

scrambler to reduce EMI by spreading the power spectrum using a 10-bit scrambler seed loaded at the

beginning.

■Data conversion of Parallel to Serial, NRZ to NRZI, NRZI to ML T3: After being scrambled, the 5B

type transmission data at 25MHz will be converted to a 125HMz serial bit stream by the parallel-to-serial

fun c tio n . Th e bit s trea m w ill be f u rthe r c o nv e rted fro m NRZ to N RZI format, un les s the c o nv e rs io n

function is bypassed by clearing ENRZI (bit 7 of XR10) to 0. After NRZI conversion, the NRZI bit stream

is passed through MLT3 encoder to generate the TP-PMD specified MLT3 code. By using MLT3 code,

the frequency and energy content of the transmission signal is reduced in the UTP, making the system

more easily compliant to FCC EMI specifications.

■Wave-Sh ape r and Media Sign al Driver: In order to reduce the energy of the harmonic frequenc y of

transmission signals, the transceiver provides a wave-shaper prior the line driver to smooth the rising/

falling edge of transmission signals while maintaining the waveforms’ symmetry. The 100BASE-TX and

10BASE-T wave-sha ped signals are both passed to the same media signa l driver. This can simplify

system design by employing a single external magnetic connection.

■100BA SE-TX Recei ving Op erati on

For 100BASE-TX receiving operation, the transceiver provides the receivi ng functions of PMD, PMA,

and PCS for incoming data signals through category 5 UTP cable and an isolation transformer with a

1:1 turns ratio. The receive transc eiver portion includes the adapt ive equalizer and baseline wander,

MLT3 to NRZI data conversion, NRZI to NRZ conversion, serial to parallel conversion, a PLL for clock

and data recove ry, de-scramble r, and the 5B/4B decod er.

■Adaptive Equalizer and Baseline Wander: High speed signals over unshielded (or shielded) twisted

pair cable will experienc e attenuation and phase shift. Thes e effects depend on the signal frequency,

cable type, cable length and the cable connectors. Robust circuits in the transceiver provide reliable

adaptive equalizer and baseline wander compensation for amplitude attenuation and phase shift due to

51/66

STE10/100A

transmission line parasitics.

■MLT3 to NRZI Decoder and PLL for Data Recovery: Following adaptive equalizer, baseline wander,

the transceiver converts the resulting MLT3 to NRZI code, which is passed to the Phase Lock Loop

circuits in order to extract the synchronous clock and the original data.

■Data Conversions of NRZI to NRZ and Serial to Parallel: After the data is recovered, it will be passed

to the NRZI-to-NRZ converter to produce a 125MHz serial bit stream. This serial bit stream will be

packed to parallel 5B type for further processing. The NRZI to NRZ conversion may be bypassed by

clearing ENRZI (bit 7 of XR10) to 0.

■De-scrambling and Decoding of 5B/4B: T he parallel 5B type data is passed to the de-scrambler and

5B/4B decoder to restore it to its original MII nibble representation.

■Carrier sensing: The Carrier Sense (CRS) signal is asserted when the transceiver detects any 2 non-

contiguous zeros wit hin any 10-bit boundary of the receiving bit stream. CRS is de-asserted when ESD

code-group or Idle code-group is detected. In half duplex mode, CRS is asserted during packet

transmission or receive; in full duplex mode, CRS is asserted only during packet reception.

■10BASE-T Tra nsmissi on Opera tion

The parallel-to-serial converter, Manchester Encoder, Link test, Jabber and the transmit wave-shaper

and line driver functions described in the section of “Wave-Shaper and Media Signal Driver” of

“10 0 BASE-T Tran smission Ope ra tion” are also provided for 10BASE - T tra n s mi ssion. Addi tionally,

Collision detection and SQ E test for half duplex application are provided.

■10BASE-T Recei ve Op erati on

Carrier sense function, receiving filter, PLL for clock and data recovery, Manchester decoder, and serial

to parallel converter functions are provided to support 10BASE-T reception.

■Loop-back Operation of transceiver

The transceiver provides inter nal loop-back (also called transceiver loop-back) operation for both

100BASE-TX and 10BASE-T o p er at ion. The l oop -b a ck function can be enabled by setting XLBEN (bit

14 of XR0) to 1. In loop-back mode, the TX± and RX± lines are isolated from the media. The transceiver

also provides remote loop-back operation for 100BASE-TX operation. The remote loop-back operation

can be enabled by setting ENRLB (bit 9 of XR10) to 1.

In 100BASE-TX inter nal loop-back operation, the data is routed from the transm it output of NRZ-to-

NRZI converter and looped back to the receive input of NRZI-to-NRZ conv erter.

In 100BASE-TX remote loop-back operation, data is received from RX± pins and passed through the

receive path to the output of the data and clock recovery section, and then looped back to the input of

the NRZI-to-MLT3 convert er and out to the medium via the transm it line drivers.

In 10B ASE- T loop-back operation, the data is passed through the transm it path to the output of the

Manches ter encoder and then looped back into the input of the Phase Lock Loop circui t in t he rece ive

path.

■Full Duplex and Half Duplex Operation of Transceiver

The transceiver can operate in either full duplex or half duplex network applications. In full duplex, both

transmission and reception can take place simultaneously. In full duplex mode, collision (COL) signal is

ignored and carrier sense (CRS) signal is asserted only when the transceiver is receiving.

In half duplex mode, transmiss ion and reception can not take place simultane ously. In half duplex

mode, the collision signal is asserted when transmitted and received signals collide, and carrier sense

is asserted during both transmission and reception.

■Auto-N egotiat ion Operation

The Auto-Negotiation function provides the means to exchange information between the transceiver

and the network partner to automatically configure both to take maximum advantage of their abilities.

The Auto-Negotiation function is controlled by ANEN (bit 12 of XR0).

During Auto-Negotiation information is exchanged with the network partner using Fast Link Pulses

STE10/100A

52/66

(FLPs) - a burst of link pulses. There are 16 bits of signalin g information cont ained in the link pulses

which advertise to the remote partne r the capabilities which are represented by the conten ts of ANA

(register XR4). According to this information the partners find out their highest common capabilities by

following the priority s eq uenc e listed below:

1. 100BASE-TX full duplex

2. 100BASE-TX half duplex

3. 10BASE-T full duplex

4. 10BASE-T half duplex

During power-up or reset, if Auto-Negotiation is enabled, the FLP s w ill b e tra ns mitt ed and the Auto-Negotia-

tion function will proceed. Ot herwise, Auto-Negotiati on will not occur until ANEN (bit 12 of XR0) is set to 1.

When the Auto-Negotiation is disabled, then Netw ork Speed and Duplex Mode are selected by programming

the XR0 register.

■Power Down Operatio n

The transceiver is designed with a power-down feature which can reduce power consumption

significan tly. Since the power supply of the 100BASE-TX and 10BASE-T circuits are se p arate , th e

tr ansceiver can turn off the circuit of eit h e r the 100BASE-TX or 10BASE-T when the other is active.

6.5.3 Flow Control in Full Duplex Application

The PAUSE functi on i s us ed to i nhibit t ransmission of dat a frames for a speci fi ed peri od of t ime. The STE10/

100 supports the full duplex protocol of IEEE802.3x. To support the PAUSE function, the STE10/100 imple-

men ts the MAC C ontrol Sub-layer functions to decode the MAC C ontrol frames received from MAC control cli-

ents and to execute the relative requests accordingly. When Full Duplex mode and the PAUSE function are

selected after Auto-Negotiation completes (refer to the configuration of XR8), the STE10/100 will enable the

PA USE function for flow control in a full duplex application. In this section we w ill des c r ibe how the STE10/ 100

implements the PAUSE function.

■MAC Control Frame and PAUSE Frame

Figure 14. MAC Control Frame Format

The MAC Control fr ame is dist inguished from other MAC fr ames only by i ts Length/Type f ield identi fier. The

MAC Control Opc ode defi ned i n MAC Control Frame format f or th PAUSE functi on i s 0001h, and the P AUSE

time is specified in the MAC C ontrol Parameters field with 2 Octets, represent ing an unsigned integer, in units

of Slot-Times. The range of possible PAUSE times is 0 to 65535 Slot-Times.

A valid PAUSE frame issued by a MAC c ontrol client (e.g., a switch or a bridge) would contain:

■The destination address, set to the globally assigned 48 bit mulitcast address 01-80-C2-00-00-01,

or to the unicast address to which the MAC control client requests to inhibit its t ransmission of data

frames.

■The MAC Cont rol Opcode field set to 0 001h.

6 Octets D e stination Address

6 Octets Source Address

2 Oc t ets Length/ Type = 88-08h

2 Octets MAC Control Opcode

MAC Control Paramete r

( minFrameSize - 160) / 8 Octets Reserved(pads with zeroes)

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STE10/100A

■2 Octets of PAUSE time specified in the MAC Control parameter field to indicate the length of time

for which the destination is requeste d to inhibit data frame transmission.

■Receive Operation for PAUSE function

Upon reception of a valid MAC Control frame, the STE10/100 will start a timer fo r the length of ti me

specified by the MAC Control Parameters field. When the timer value reaches zero, the STE10/100

exits the PAUSE state. Howev er, a PAUSE frame will not affect the transmission of a fram e that has

been submitte d to the MAC (i.e., once a transmit out of the MAC is begun, it can’t be interrupted).

Conversely, the STE10/100 will not begin to transmit a frame more than one slot-time after valid PAUSE

frame is received a with a non-zero PAUSE time. If the STE10/100 receives a PAUSE frame with a zero

PAUSE time value, the STE10/100 exits the PAUSE state immediately.

Figure 15. PAUSE operation receive state diagram

Wait for Transmission Complete d

transmission_in_progress = false * DA ≠ (01-80-C2-00-00-01 + Phys-address)

DA = (01-80-C2-00-00-01 + Phys-address)

PAU SE FUNC TION

n_slots_rx = data [17:32]

Start pause_timer (n_slots_rx * slot_time)

UCT

END PAUSE

Opcode = PAUSE Function

STE10/100A

54/66

6.6 LED Display Op eration

The STE10/ 100 provides 2 LED display modes; the detailed de scriptions of their operation are described in the

PIN Desc ription section.

■First mode - 3 LED displays:

100Mbps (on) or 10Mbps (off)

Link (Rem ains on when l ink ok) or Activity (Blinks at 10Hz when receiving or transmitting collision-free)

FD (Rem ains on when in Full duplex mode) or Collision (Blinks at 20Hz when collidions det ected)

■Second mo de – 4 LED displays:

100 Link (On when 100M link ok)

10 Link (On when 10M link ok)

Activity (Blinks at 10Hz when receiving or transmitting)

FD (Rem ains on when in Full duplex mode) or Collision (Blinks at 20Hz when collis ions detec t ed)

6.7 Reset Operation

6.7.1 Reset whol e chip

There are two ways to reset t he STE10/100: Hardware reset via RST# pin (to ensure pr oper reset operation,

the RST# signal should be asserted at least 100ms); and software reset via SWR (bit 0 of CSR0) being set to

1 (the STE 10/100 will reset all circuits, set registers to their default values, and will clear SWR.

6.7.2 Reset Transceiver only

When XRST (bit 15 of XR0) is set to 1, the transceiver will reset its circui ts, will initialize its registers to their

default values, and clear XRST.

6.8 Wake on LAN Function

The STE10/100 can ass ert a signal to wake up the system when it has receiv ed a Magic Packet from the net-

work. The W ake on LA N operation is described as follow.

■The Magic Packe t format:

Valid destination address that can pass the address filter of the STE10/100

The payload of frame must incl ude at leas t 6 conti guous ‘ FF’ fol lowed immediately by 16 repetitions of

IEEE address.

The frame can contain multiple ‘six FF + sixteen IEEE address’ pattern.

V alid C R C

■The Wake on LAN operation

The Wake on LAN enable function is controlled by WOL (bit 18 of CSR18), which is loaded from

EEPRO M after reset or programmed by driver software. If WOL is set and the STE 10/100 rece ives a

Magic Pa cket, it will as s ert the PME # sign al (activ e low) to indic ate reception of a wake up frame and

will set the PME status bit (bit 15 of CSR20).

6.9 AC P I Po wer Mana g em e n t Fu ncti on

The STE10/100 has a built-in capability for Power Management (PM) which is controlled by the host system

The STE10/100 will provide:

■Compatibility with Device Class Power Management Reference Specification

■Network Device Class, Draft proposal v0.9, Octobe r 1996

■Compatibility with ACPI, Rev 1.0, December 22, 1996

■Compatibility with PCI Bus Power Managem ent Interface Specification, Rev 1.0, January 6, 1997

55/66

STE10/100A

■Compatibility with AMD Magic Packet™ Technology.

6.9.1 Power States

■DO (Fully On)

In this state the STE10/100 operat es with full functionality and consumes normal power. While in the

D0 state, if the PCI clock is lower than 16MHz, the STE1 0/100 may not receive or transmit frames

properly.

■D1, D2, and D3hot

In these states, the STE10/10 0 doesn’t respon d to any accesses excep t configuration spac e and full

function context in place. The only network operation the STE10/100 can initiate is a wake-up event.

■D3cold (Power Removed)

In this state all function context is lost. When power is restored, a PCI reset must be asserted and the

function will return to D0.

■D3hot (So ftware Visible D3)

When the STE10/ 100 is brought back to D0 from D3hot the software must perform a full initialization.

The STE10/100 in the D3hot state responds to configuration cycles as long as power and clock are

supplied. This requires the device to perform an internal reset and return t o a power-up reset condition

without the RST# pin asserted.

Table 13. Power Stage

Device

State PCI Bus

State Function

Context Clock Power Supported

Actions to

Function

Supported

Actions from

Function

D0 B0 Full function context in

place Full speed Full

power Any PCI

transaction Any PCI

transaction or

interrupt

D1 B0, B1 Configuration

maintained. No Tx and

Rx except wake-up

events

Stopped to

Full speed PCI configuration

access Only wake-up

events

D2 B0, B1,

B2 Configuration

maintained. No Tx and

Stopped to

Full speed PCI configuration

access(B0, B1)

D3hot B0, B1,

B2 Configur ation lost, full

initialization required

upon return to D0

Stopped to

Full speed PCI configuration

access(B0, B1)

D3cold B3 All configuration lost.

Power-on defaults in

place on return to D0

No clock No

power Power-on reset

STE10/100A

56/66

7.0 GENERA L EEPRO M FO RMAT DESC RIPTION

Tab le 14. C onnec ti on Type D e fi ni tion

Offset Length Description

0 2 STE10/100 Signature: 0x81, 0x09

2 1 Format major version: 0x02,

old ROM format version 0x01 is for STE10/100-MAC only.

3 1 Format minor version: 0x00

4 4 Reserved

IEEE network address: ID1, ID2, ID3, ID4, ID5, ID6

E 1 IEEE ID checksum1:

Sm0=0, carry=0

SUM=Sm6 where Smi=(Smi-1<<1)+(carry from shift)+IDi

F 1 IEEE ID checksum2:

Reserved, should be zero.

10 1 PHY type, 0xFF: Internal PHY (STE10/100 only)

11 1 Reserved, should be zero.

12 2 Default Connection Type, see Table 15

14 0B Reserved, should be zero.

1F 1 Flow Control Field,

00: Disable Flow Control function,

01: Enable Flow Control function

20 2 PCI Device ID.

22 2 PCI Vendor ID.

24 2 PCI Subsystem ID.

26 2 PCI Subsystem Vendor ID.

28 1 MIN_GNT value.

29 1 MAX_LAT value.

2A 4 Cardbus CIS pointer.

2E 2 CSR18 (CR) bit 31-16 recall data.

30 4E Reserved, should be zero.

7E 2 CheckSum, the least significant two bytes of FCS for data stored in offset 0..7D of

EEPROM

57/66

STE10/100A

Tab le 15. C onnec ti on Type D e fi ni tion

0xFFFF Software Driver Default

0x0100 Auto-Negotiation

0x0200 Power-on Auto-detection

0x0400 Auto Sense

0x0000 10BaseT

0x0001 BNC

0x0002 AUI

0x0003 100BaseTx

0x0004 100BaseT4

0x0005 100BaseFx

0x0010 10BaseT Full Duplex

0x0013 100BaseTx Full Duplex

0x0015 100BaseFx Full Duplex

STE10/100A

58/66

8.0 ELECT RICAL SPECIFICATIONS AND TIMINGS

Table 16. Absolute Maximum Ratings

Parameter Value

Supply Voltage(Vcc) -0.5 V to 7.0 V

Input Voltage -0.5 V to VCC + 0.5 V

Output Voltage -0.5 V to VCC + 0.5 V

Storage Temperature -65 °C to 150 °C(-85°F to 302°F)

Ambient Temperature 0°C to 70°C(32°F to 158°F)

ESD Protection 2000V

Table 17. General DC Specifications

Symbol Parameter Test Condition Min. Typ. Max. Units

General DC

Vcc Supply Voltage 3.14 3.3 3.46 V

Icc Power Supply 130 mA

PCI Interface DC Specfications

Vilp I nput LOW Voltage -0.5 0 .8 V

Vihp Input HIGH Volta ge 2.0 5.5 V

Iilp Input LOW Leakage Current Vin = .8V -10 10 µA

Iihp Input HIGH Leakage Current Vin = 2.0V -10 10 µA

Volp Output LOW Voltage Iout =3mA/6mA . .55 V

Vohp Output HIGH Voltage Iout =-2mA 2.4 V

Cinp Input Pin Capaci tance 5 8 pF

Cclkp CLK Pin Capacitance 5 8 pF

Cidsel IDSEL Pin Capacitance 5 8 pF

Lpinp Pin Inductance N/A nH

Flash/EEPROM Interface DC Specifications

Vilf I nput LOW Voltage -0.5 0.8 V

Vihf I nput HIGH Volta ge 2.0 5 .5 V

Iif I nput Leaka ge Curren t -10 10 µA

Volf Output LOW Voltage Iout=3mA,6mA .55 V

Vohf Output HIGH Voltage Iout=-2mA 2.4 V

Cinf I nput Pin Capaci tance 5 8 pF

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STE10/100A

10BASE-T Voltage/Current Characteristics

Rid10 I nput Differentia l Resistan ce D C TBD kΩ

Vida10 Input Differential Accept Peak

Voltage 5MHz ~ 10MHz 585 3100 mV

Vidr10 Input Differential Reject Peak

Voltage 5MHz ~ 10MHz 0 585 mV

Vicm10 Input Common Mode Voltage TBD V

Vod10 Output Differential Peak Voltage 2200 2800 V

Icct10 Line Driver Supply TBD mA

100BASE-TX Voltage/Current Characteristics

Rid100 I nput Differentia l Resistan ce TBD kΩ

Vida100 Input Differential Accept Peak

Voltage 200 1000 mV

Vidr100 Input Differential Reject Peak

Voltage 0200mV

Vicm100 Input Common Mode Voltage TBD V

Vod100 Output Differential Peak Voltage 950 1050 V

Icct100 Line Driver Supply TBD mA

Table 18. AC Specifications

Symbol Parameter Test Condition Min. Typ. Max. Units

PCI Signaling AC Specifications

Ioh(AC) Switching Current High Vout=.7Vcc -32Vcc mA

Iol(AC) Switching Current Low Vout=.18Vcc 38Vcc mA

Icl Low Clamp Current -3<Vin<-1 -

25+(Vi

n+1)/

.015

Tr Unloaded Output Rise Time 1 4 V/ns

Tf Unloaded Output Fall Time 1 4 V/ns

Table 17. General DC Specifications

Symbol Parameter Test Condition Min. Typ. Max. Units

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8.1 Timing Specifications

Table 19. PCI Clock Speci fications

Figure 16. PCI Clock Waveform

Table 20. X1 Specifications

Symbol Parameter Test Condition Min. Typ. Max. Units

Tc C lock Cycle Time 30 50 ns

Th Clock High Time 11 -- ns

Tl C lock Low Tim e 11 -- ns

Clock Slew Rate 1 4 V/ns

Symbol Parameter Test Condition Min. Typ. Max. Units

TX1d X1 Duty Cycle 45 50 55 %

TX1p X1 Period 30 ns

TX1t X1 Tolerance PPM

Table 21. PCI Timing

Symbol Parameter Test Condition Min. Typ. Max. Units

Tval Clock to Signal Valid Delay

(bussed signals) 211ns

Tval(ptp) Clock to Signal Valid Delay

(point to point) 211ns

Ton Float to Active Delay 2 ns

Toff Active to Float Delay 28 ns

0.4Vcc

0.6Vcc

0.2Vcc

0.475Vcc

0.4Vcc, p-to-p

minimum

0.325 Vcc

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STE10/100A

Figure 17. PCI Timings

Tsu Input Set up Time to Clock

(bussed signals) 7ns

Tsu(ptp) Input Set up Time to Clock

(point to point) 10,12 ns

Th Input Hold Time from Clock 0 ns

Trst Reset Active Time after Power

Stable 1ms

Trst-clk Reset Active Time after CLK

Stable 100 µs

Trst-off Reset Active to Output Float

delay 40 ns

Table 21. PCI Timing

Symbol Parameter Test Condition Min. Typ. Max. Units

CLK

0.6Vcc

0.2Vcc

Tval

OUTP UT Delay

Ton

0.4Vcc

Tri -state OUT PUT

INPUT 0.4Vcc

Toff

Tsu Th

0.4Vcc

0.6Vcc

0.2Vcc

0.4Vcc

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Table 22. Flash Interface Timi ngs

Figure 18. Flash write timings

Symbol Parameter Test Condition Min. Typ. Max. Units

Tfcyc Read/Write Cycle Time ns

Tfce Address to Read Data Setup

Time ns

Tfce CS# to Read Data Setup Time ns

Tfoe OE# Active to Read Data Setup

Time ns

Tfdf OE# Inactive to Data Driven

Delay Time ns

Tfas Address Setup Time before WE# ns

Tfah Address Hold Time after WE# ns

Tfcs CS# Setup Time before WE# ns

Tfch Address Hold Time after WE# ns

Tfds Data Setup Time ns

Tfdh Data Hold Time ns

Tfwpw Write Pulse Width ns

Tfwph Write Pulse Width High ns

Tfasc Address Setup Time before CS# ns

Tfahc Address Hold Time after CS# ns

CS#

WE#

DATA

ADDRESS

Tfcyc

Tfasc Tfah

Tfasw Tahw

Tfwpw

Tfds Tfdh

Tfcss Tfcsh

Tfwph

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STE10/100A

Figure 19. Flash read timings

Table 23. EEPROM Interface Timings

Fig ur e 20. Seria l EEPR OM ti mi ng

Symbol Parameter Test Condition Min. Typ. Max. Units

Tscf Serial Clock Frequency Tscf - 1.4 µs 714 kHz

Tecss Delay from CS High to SK High 0.1 1.7 µs

Tecs h D elay from SK Low to CS Lo w 200 650 ns

Tedts Setup Time of DI to SK 200 600 ns

Tedth Hold Time of DI after SK 0 700 ns

Tecsl CS Low Time 0.5 1.1 µs

ADDRESS

CS#

OE#

DATA

Tfce

Tfoe

Tfasd Tfdf

Tfcyc

CLK

Tecss Tecsh Tecsl

Tedts Tedth

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Table 24. 10BASE-T Normal Link Pulse(NLP) Timings Specifications

Figure 21. Normal Link Pulse timings

Table 25. Auto-Negotiation Fast Link Pulse(FLP) Timing s Specification s

Figure 22. Fast Link Pulse timing

Table 26. 100BASE-TX Transmitter AC Timings Specification

Symbol Parameter Test Condition Min. Typ. Max. Units

NLP Width 10Mbps 100 ns

NLP Period 10Mbps 8 24 ms

Symbol Parameter Test Condition Min. Typ. Max. Units

Tflpw FLP Width 100

Clock pulse to clock pulse period 111 125 139

Clock pulse to Data pulse period 55.5 62.5 69.5

Number of pulses in one burst 17 33

Burst Width 2

FLP Burst period 8 16 24

Symbol Parameter Test Condition Min. Typ. Max. Units

Tjit TDP-TDN Differential Output

Peak Jitter 1.4 ps

Tnpw

Tnpc

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STE10/100A

DIM. mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 3.04 3.40 0.12 0.134

A1 0.25 0.33 0.010 0.013

A2 2.57 2.71 2.87 0.101 0.107 0.113

b 0.13 0.28 0.005 0.011

C 0.13 0.23 0.005 0.009

D 20 0.787

E 14 0.551

e 0.5 0.02

HD 23.2 0.913

HE 17.2 0.677

L 0.73 0.88 1/03 0.029 0.035 0.041

L1 1.60 0.063

ZD 0.75 0.03

ZE 0.75 0.03

ccc 0.12 0.005

Angle 0°(min.), 7°(max.)

L dimension is measured at gauge plane at 0.25 above the seating

plane

65102

103

128

PIN 1 ID

0.7 DEGREES

PQF128CM

MC DA -B

0.12

.005

CDC

0.25 GAGE PLANE

S S

PQFP128 (14x20x2.7mm)

May 1999 1020818

OUTLINE AND

MECHANICAL DATA

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to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics product s are not

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STE10/100A