Intel(R) 41110 Serial to Parallel PCI Bridge Datasheet Product Features x8 PCI Express to Single PCIX/PCI bus bridge PCI Express Specification, Revision 1.0a Support for single x8, single x4 or single x1 PCI Express operation. Supports 64-bit PCI-X 133 MHz, 100 MHz and 66 MHz as well as PCI 66 MHz and 33 MHz for mixed PCI/PCI-X modes and frequency bus/device operation 64-bit addressing support 32-bit CRC (cyclic redundancy checking) covering all transmitted data packets. 16-bit CRC on all link message information. Raw bit-rate on the data pins of 2.5 Gbit/s, resulting in a raw bandwidth per pin of 250 MB/s. Maximum realized bandwidth on PCI Express interface is 2 GB/s (in x8 mode) in each direction simultaneously, for an aggregate of 4 GB/s. PCI Local Bus Specification, Revision 2.3. PCI-to-PCI Bridge Specification, Revision 1.1. PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0b 64-bit 66 MHz, 3.3 V, NOT 5 V tolerant. On Die Termination (ODT) with 8.3K pull-up to 3.3V for PCI signals. Six external REQ/GNT Pairs for internal arbiter on segment A. Programmable bus parking on either the last agent or always on the 41110 Bridge 2-level programmable round-robin internal arbiter with Multi-Transaction Timer (MTT) External PCI clock-feed support for asynchronous primary and secondary domain operation. 64-bit addressing for upstream and downstream transactions Downstream LOCK# support. No upstream LOCK# support. PCI fast Back-to-Back capable as target. Up to four active and four pending upstream memory read transactions Up to two downstream delayed (memory read, I/O read/write and configuration read/ write) transaction. Tunable inbound read prefetch algorithm for PCI MRM/MRL commands Device hiding support for secondary PCI devices. Secondary bus Private Memory support via Opaque memory region Local initialization via SMBus Secondary side initialization via Type 0 configuration cycles. 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Copyright (c) 2006, Intel Corporation 2 Contents Contents 1 Introduction.................................................................................................................................... 7 1.1 1.2 2 About This Document ........................................................................................................... 7 Product Overview ................................................................................................................. 7 Signal Description ......................................................................................................................... 8 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 On Die Termination (ODT).................................................................................................... 8 PCI Express Interface........................................................................................................... 9 PCI Bus Interface................................................................................................................10 PCI Bus Interface 64-Bit Extension ....................................................................................11 PCI Bus Interface Clocks and, Reset and Power Management .........................................12 Interrupt Interface ...............................................................................................................12 Reset Straps .......................................................................................................................12 SMBus Interface .................................................................................................................14 Miscellaneous Pins .............................................................................................................14 Electrical and Thermal Characteristics .....................................................................................16 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 4 DC Voltage and Current Specifications ..............................................................................16 41110 Bridge Power Consumption .....................................................................................16 Power Delivery Guidelines..................................................................................................17 Input Characteristic Signal Association ..............................................................................18 DC Input Characteristics .....................................................................................................18 DC Characteristic Output Signal Association .....................................................................18 DC Output Characteristics ..................................................................................................19 PCI Express Interface DC Specifications ...........................................................................19 AC Specifications................................................................................................................25 Voltage Filter Specifications ...............................................................................................26 VCC15 and VCC33 Voltage Requirements ........................................................................27 Timing Specifications ..........................................................................................................28 Reference and Compensation Pins ....................................................................................36 Thermal Specifications .......................................................................................................37 Package Specification and Ballout ............................................................................................39 4.1 4.2 4.3 Package Specification ........................................................................................................39 Signal List, sorted by Ball Location.....................................................................................41 Signal List, sorted by Signal Name.....................................................................................45 Figures 1 2 3 4 5 6 7 8 Minimum Transmitter Timing and Voltage Output Compliance Specification.............................22 Compliance Test/Measurement Load.........................................................................................23 Minimum Receiver Eye Timing and Voltage Compliance Specification .....................................23 Voltage Requirements VCC33 versus VCC15 ...........................................................................27 PCI Output Timing ......................................................................................................................31 PCI Input Timing .........................................................................................................................31 PCI-X 3.3V Clock Waveform ......................................................................................................33 41110 Bridge Reference and Compensation Circuit Implementations .......................................37 3 Contents 9 41110 Bridge Package Dimensions (Top View) ......................................................................... 39 10 41110 Bridge Package Dimensions (Side View) ........................................................................ 40 Tables 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 4 ODT Signals ................................................................................................................................. 8 PCI Express Interface Pins........................................................................................................... 9 PCI Interface Pins....................................................................................................................... 10 PCI Interface Pins: 64-Bit Extensions......................................................................................... 11 PCI Clock and Reset Pins .......................................................................................................... 12 Interrupt Interface Pins ............................................................................................................... 12 Reset Strap Pins......................................................................................................................... 13 SMBus Interface Pins ................................................................................................................. 14 Miscellaneous Pins ..................................................................................................................... 14 Intel(R) 41110 Bridge DC Voltage Specifications ......................................................................... 16 41110 Bridge Maximum Voltage Plane Currents ....................................................................... 16 41110 Bridge Thermal Voltage Plane Currents .......................................................................... 17 Watts .......................................................................................................................................... 17 DC Characteristics Input Signal Association .............................................................................. 18 DC Input Characteristics............................................................................................................. 18 DC Characteristic Output Signal Association ............................................................................. 18 DC Output Characteristic............................................................................................................ 19 Differential Transmitter (TX) DC Output Specifications .............................................................. 19 Differential Receiver (RX) DC Input Specifications .................................................................... 21 DC Specifications for PCI and PCI-X 3.3 V Signaling ................................................................ 24 DC Specification for Input Clock Signals .................................................................................... 25 DC Specification for Output Clock Signals ................................................................................. 25 Conventional PCI 3.3V AC Characteristics ................................................................................ 25 PCI-X 3.3V AC Characteristics ................................................................................................... 26 Differential Transmitter (TX) AC Output Specifications .............................................................. 28 Differential Receiver (RX) AC Input Specifications..................................................................... 29 PCI Interface Timing................................................................................................................... 30 PCI-X 3.3V Signal Timing Parameters ....................................................................................... 31 PCI and PCI-X Clock Timings .................................................................................................... 34 41110 Bridge Clock Timings....................................................................................................... 35 41110 Bridge Thermal Specifications ......................................................................................... 38 Torsional Clip Heatsink Thermal Solution .................................................................................. 38 Signal List, sorted by Ball Name................................................................................................. 41 Signal List, sorted by Signal Name............................................................................................. 45 Contents Revision History Date Revision Description February 2006 002 Updated Product Features section, Copyright page, Section 2.6, and several tables. January 2006 001 Initial release. 5 Contents This page intentionally left blank. 6 Datasheet -- 41110 Bridge Introduction 1.1 1 About This Document This document provides information on the Intel(R) 41110 Serial to Parallel PCI Bridge, including a functional overview, signal descriptions, mechanical data, package signal location and bus functional waveforms. 1.2 Product Overview The Intel(R) 41110 Serial to Parallel PCI Bridge (also called the 41110 Bridge) integrates one PCI Express to PCI/PCI-X bridge. The bridge follows the PCI-to-PCI Bridge programming model. The PCI Express port is compatible with the PCI Express Specification, Revision 1.0a. The PCI interface is compatible with the PCI Local Bus Specification, Revision 2.3 and PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0b. 7 41110 Bridge -- Datasheet Signal Description 2 The "#" symbol at the end of a signal name indicates that the active, or asserted state, occurs when the signal is at a low voltage level. When "#" is not present after the signal name, the signal is asserted when at the high voltage level. The following notations are used to describe the signal type: 2.1 I: Input pin O: Output pin OD: Open-drain Output pin I/O: Bidirectional Input/Output pin I/OD: Bidirectional Input/Open-drain Output pin On Die Termination (ODT) The 41110 Bridge incorporates on-die termination for most of the PCI interface signals. This eliminates the need for the system designer to incorporate external pull-up resistors in the design. The following signals have an on die termination of 8.33K +40%: Table 1. ODT Signals A_ACK64# A_AD[63:32] A_CBE#[7:4] A_DEVSEL# A_FRAME# A_GNT#[5:0] A_IRDY# A_PAR A_PAR64 A_PERR# A_LOCK# A_REQ#[5:0] A_REQ64# A_SERR# A_STOP# A_TRDY# A_INTA# 8 Datasheet -- 41110 Bridge A_ACK64# A_INTB# A_INTC# A_INTD# TCK TDI TDO TMS 2.2 PCI Express Interface Table 2. PCI Express Interface Pins Signal REFCLKp/ REFCLKn I/O I Description PCI Express Reference Clocks: 100 MHz differential clock pair. PCI Express Serial Data Transmit: PCI Express differential data transmit signals. PETp[7:0]/ PETn[7:0] O X8 Mode: All PETp[7:0]/ PETn[7:0] are used X4 Mode: Only PETp[3:0]/ PETn[3:0] are used x1 Mode: Either PETp[0]/ PETn[0] is used or PETp[7]/ PETn[7] is used PCI Express Serial Data Receive: PCI Express differential data receive signals. PERp[7:0]/ PERn[7:0] I X8 Mode: All PERp[7:0]/ PERn[7:0] are used X4 Mode: Only PERp[3:0]/ PERn[3:0] are used x1 Mode: Either PERp[0]/ PERn[0] is used or PERp[7]/ PERn[7] is used PE_RCOMP[1:0] I Total 36 PCI Express Compensation Inputs: Analog signals. Connect to a 24.91% pull-up resitor to 1.5V. A single resistor can be used for both signals. 9 41110 Bridge -- Datasheet 2.3 PCI Bus Interface Table 3. PCI Interface Pins (Sheet 1 of 2) Signal A_AD[31:0] I/O Description I/O PCI Address/Data: These signals are a multiplexed address and data bus. During the address phase or phases of a transaction, the initiator drives a physical address on A_AD[31:0]. During the data phases of a transaction, the initiator drives write data, or the target drives read data. No External pull-up resistors are required on the system board for these signals. A_C/BE#[3:0] I/O Bus Command and Byte Enables: These signals are a multiplexed command field and byte enable field. During the address phase or phases of a transaction, the initiator drives the transaction type on C/BE#[3:0]. When there are two address phases, the first address phase carries the dual address command and the second address phase carries the transaction type. For both read and write transactions, the initiator drives byte enables on C/BE#[3:0] during the data phases. No External pull-up resistors are required on the system board for these signals. A_PAR I/O Parity: Even parity calculated on 36 bits - AD[31:0] plus C/BE[3:0]#. It is calculated on all 36 bits regardless of the valid byte enables. It is generated for address and data phases. It is driven identically to the AD[31:0] lines, except it is delayed by exactly one PCI clock. It is an output during the address phase for all 41110 Bridge initiated transactions and all data phases when the 41110 Bridge is the initiator of a PCI write transaction, and when it is the target of a read transaction. 41110 Bridge checks parity when it is the initiator of PCI read transactions and when it is the target of PCI write transactions. No External pull-up resistors are required on the system board for these signals. A_DEVSEL# I/O Device Select: The bridge asserts DEVSEL# to claim a PCI transaction. As a target, the 41110 Bridge asserts DEVSEL# when a PCI master peripheral attempts an access an address destined for PCI Express. As an initiator, DEVSEL# indicates the response to a 41110 Bridge initiated transaction on the PCI bus. DEVSEL# is tri-stated from the leading edge of A_RST#. DEVSEL# remains tri-stated by the 41110 Bridge until driven as a target. No External pull-up resistors are required on the system board for these signals. A_FRAME# I/O Frame: FRAME# is driven by the Initiator to indicate the beginning and duration of an access. While FRAME# is asserted data transfers continue. When FRAME# is negated the transaction is in the final data phase. No External pull-up resistors are required on the system board for these signals. A_IRDY# I/O Initiator Ready: IRDY# indicates the ability of the initiator to complete the current data phase of the transaction. A data phase is completed when both IRDY# and TRDY# are sampled asserted. No External pull-up resistors are required on the system board for these signals. A_TRDY# I/O Target Ready: Indicates the ability of the target to complete the current data phase of the transaction. A data phase is completed when both TRDY# and IRDY# are sampled asserted. TRDY# is tri-stated from the leading edge of RST#. TRDY# remains tri-stated by the 41110 Bridge until driven as a target. No External pull-up resistors are required on the system board for these signals. A_STOP# A_PERR# I/O I/O Stop: Indicates that the target is requesting an initiator to stop the current transaction. No External pull-up resistors are required on the system board for these signals. Parity Error: Driven by an external PCI device when it receives data that has a parity error. Driven by 41110 Bridge when, as a initiator it detects a parity error during a read transaction and as a target during write transactions. No External pull-up resistors are required on the system board for these signals. A_SERR# I System Error: The 41110 Bridge samples SERR# as an input and conditionally forwards it to the PCI Express. No External pull-up resistors are required on the system board for these signals. 10 Datasheet -- 41110 Bridge Table 3. PCI Interface Pins (Sheet 2 of 2) Signal I/O A_REQ#[5:0] I A_GNT#[5:0] O Description PCI Requests: REQ# receives request inputs into the internal arbiter. No External pull-up resistors are required on the system board for these signals. PCI Grants: GNT# is the bus grant output corresponding to request input bits[5:0] from the internal arbiter. GNT# indicates that an initiator can start a transaction on the PCI bus. No External pull-up resistors are required on the system board for these signals. A_M66EN I/OD 66 MHz Enable: This input signal from the PCI Bus indicates the speed of the PCI Bus. If it is high then the Bus speed is 66 MHz and if it is low then the bus speed is 33 MHz. This signal will be used to generate appropriate clock (33 or 66 MHz) on the PCI Bus. Use an approximately 8.2K resistor to pull to VCC33 or pull-down to ground. A_PCIXCAP A_LOCK# I O PCI-X Capable: Indicates whether all devices on the PCI bus are PCI-X devices, so that the 41110 Bridge can switch into PCI-X mode. Use an approximately 8.2K resistor to pull to VCC33. PCI Lock: Indicates an exclusive bus operation and may require multiple transactions to complete. This signal is an output from the bridge when it is initiating exclusive transactions on PCI. LOCK# is ignored when PCI masters are granted the bus. Locked transaction do not propagate upstream. No External pull-up resistors are required on the system board for these signals. Total 59 2.4 PCI Bus Interface 64-Bit Extension Table 4. PCI Interface Pins: 64-Bit Extensions Signal A_AD[63:32] A_C/BE#[7:4] I/O I/O I/O Description PCI Address/Data: These signals are a multiplexed address and data bus. This bus provides an additional 32 bits to the PCI bus. During the data phases of a transaction, the initiator drives the upper 32 bits of 64-bit write data, or the target drives the upper 32 bits of 64-bit read data, when REQ64# and ACK64# are both asserted. Bus Command and Byte enables upper 4 bits: These signals are a multiplexed command field and byte enable field. For both reads and write transactions, the initiator will drive byte enables for the AD[63:32] data bits on C/BE7:4] during the data phases when REQ64# and ACK64# are both asserted. A_PAR64 A_REQ64# A_ACK64# Total I/O PCI interface upper 32 bits parity: This carries the even parity of the 36 bits of AD[63:32] and C/ BE#[7:4] for both address and data phases. I/O PCI interface request 64-bit transfer: This is asserted by the initiator to indicate that the initiator is requesting a 64-bit data transfer. It has the same timing as FRAME#. When the 41110 Bridge is the initiator, this signal is an output. When the 41110 Bridge is the target this signal is an input. I/O PCI interface acknowledge 64-bit transfer: This is asserted by the target only when REQ64# is asserted by the initiator, to indicate the target ability to transfer data using 64 bits. It has the same timing as DEVSEL#. 39 11 41110 Bridge -- Datasheet 2.5 PCI Bus Interface Clocks and, Reset and Power Management Table 5. PCI Clock and Reset Pins Signal A_CLKO[6:0] I/O O Description PCI Clock Output: 33/66/100/133 MHz clock for a PCI device. A_CLK[6] must be connected to the respective A_CLKIN input. for feeding the PCI interface logic. Unused clock outputs may be disabled via the "Offset 43: PCLKC - PCI Clock Control" register and should be treated as no connects on the board. Note: A_CLKIN A_RST# A_PME# Registers are listed in the Intel(R) 41110 Serial to Parallel PCI Bridge Developer's Manual. I PCI Clock In: This signal is PCI clock feedback input. This pin should be connected to the corresponding A_CLKO[6] through a 221% series resistor. O PCI Reset: The bridge asserts RST# to reset devices that reside on the secondary PCI bus. I PCI Power Management Event: PCI bus power management event signal. This is a shared open drain input from all the PCI cards on the corresponding PCI bus segment. This is a level sensitive signal that will be converted to a PME event on PCI Express. This pin does not have on-die 8.3K pull-up. This pull-up must be provided externally. Total 2.6 10 Interrupt Interface This section lists the interrupt interface signals. There is one set of interrupt signals for the standard INTA:INTD PCI signals. Table 6. Signal A_INTA# A_INTB# A_INTC# A_INTD# Total 2.7 Interrupt Interface Pins I/O I Description Interrupt Request Bus: The interrupt lines from PCI interrupts INTA#:INTD# can be routed to these interrupt lines. Refer to the Intel(R) 41110 Serial to Parallel PCI Bridge Design Guide for more information on device numbering. 4 Reset Straps The following signals are used for static configuration. These signals are all sampled on the rising edge of PERST#. 12 Datasheet -- 41110 Bridge Table 7. Reset Strap Pins Signal A_133EN I/O Description I PCI-X 133 MHz Enable: This pin, when high, allows the PCI-X segment to run at 133 MHz when A_PCIXCAP is sampled high. When low, the PCI-X segment will only run at 100 MHz when A_PCIXCAP is sampled high. Use an approximately 8.2K resistor to pull to VCC33 or pull-down to ground. Internal Test Modes: Straps 6, 2:0 should be pulled low and straps 5:3 must be pulled high for normal operation. A_STRAP A_STRAP[6:0] I 0 1 2 3 4 5 6 Logic Level `0' `0' `0' `1' `1' `1' `0' Use approximately an 8.2K resistor to pull-up to VCC33 or pull-down to VSS A_TEST[2:1] CFGRETRY I I Internal Test Modes: These straps should be pulled high to VCC33. Use approximately an 8.2K resistor to pull-up to VCC33. Configuration Retry: This pin, when sampled high sets the Configuration Cycle Retry Bit (bit 3) in the Bridge Initialization Register at Offset FC. If no local initialization is needed, this pin should be pulled low to VSS. Refer to the Intel(R) 41110 Serial to Parallel PCI Bridge Design Guide for more information. STRAP_V_1 I Pull up to VCC33 STRAP_V_2 I Pull up to VCC33 STRAP_V_3 I Pull up to VCC33 STRAP_V_4 I Pull up to VCC33 STRAP_V_5 I Pull up to VCC33 STRAP_V_6 I Pull up to VCC33 STRAP_V_7 I Pull up to VCC33 STRAP_V_8 I Pull up to VCC33 STRAP_V_9 I Pull up to VCC33 STRAP_V_10 I Pull up to VCC33 STRAP_V_11 I Pull up to VCC33 STRAP_V_12 I Pull up to VCC33 STRAP_V_13 I Pull up to VCC33 STRAP_V_14 I Pull up to VCC33 STRAP_V_15 I Pull down to GND Total 27 13 41110 Bridge -- Datasheet 2.8 SMBus Interface Table 8. SMBus Interface Pins Signal I/O Description SMBCLK I/OD SMBus Clock: This signal should be pulled to 3.3V via an 8.2K resistor. SMBDAT I/OD SMBus Data: This signal should be pulled to 3.3V via an 8.2K resistor. SMBus Addressing Straps: These straps set the SMBus Address for 41110 Bridge. The address is determined as indicated below: SMBUS[5] SMBUS[3:1] I Bit 7 `1' Bit 6 `1' Bit 5 SMBUS[5] Bit 4 `0' Bit 3 SMBUS[3] Bit 2 SMBUS[2] Bit 1 SMBUS[1] These signals (bits 5, 3:1) should be pulled up to 3.3V or down to ground. Sampled at the rising edge of PERST#. Total 6 2.9 Miscellaneous Pins Table 9. Miscellaneous Pins Signal CFGRST# I/O Description O Configuration Reset: This signal is asserted low when ever the bridge goes through a fundamental reset (PERST#, RSTIN#, or PCI Express Reset). This signal should be used to indicate when the local initialization methods should be executed. Refer to the Intel(R) 41110 Serial to Parallel PCI Bridge Design Guide for more information. 14 PERST# I PCI Express Fundamental Reset: When low, asynchronously resets the internal logic (including sticky bits). RSTIN# I Reset In: When Asserted, this signal asynchronously resets the internal logic and asserts A_RST# output. This signal should be pulled high for adapter card usage. TCK I TAP Clock In: This is the input clock to the JTAG TAP controller. Acceptable frequency is 0-16MHz If not utilizing JTAG, this signal can be left as a no connect. TDI I Test Data In: This is the serial data input to the JTAG BSCAN shift register chain and to the JTAG BSCAN control logic. This is latched in on the rising edge of TCK. If not utilizing JTAG, this signal can be left as a no connect. TDO O Test Data Output: This is the serial data output from the JTAG BSCAN logic If not utilizing JTAG, this signal can be left as a no connect. Datasheet -- 41110 Bridge Signal I/O Description TMS I Test Mode Select: This signal controls the TAP controller state machine to move to different states and is sampled on the rising edge of TCK. If not utilizing JTAG, this signal can be left as a no connect. TRST# I Test Reset In: This signal is used to asynchronously reset the JTAG BSCAN logic. If not utilizing JTAG, connect this signal to ground through a 1K pulldown resistor. RESERVED[8:1] I Reserved: (8 pins) These input pins should be pulled low Use an approximately 8.2K resistor to pull-down to ground. NC[19:18], NC[16:1] A_NC[10:1] O No Connect: (39 pins) These output pins should be left floating RESERVED O No Connect RESERVED O No Connect CMODE I/O This signal requires an external pull-up, 8.2K to 3.3V Total 47 15 41110 Bridge -- Datasheet Electrical and Thermal Characteristics 3 3.1 DC Voltage and Current Specifications 3.1.1 41110 Bridge DC Specifications Table 10. Intel(R) 41110 Bridge DC Voltage Specifications Symbol Parameter Min Typ Max Unit VCC15 Intel(R) 41110 Bridge Core 1.425 1.5 1.575 V VCC15 PCI-X I/O Voltage 1.425 1.5 1.575 V VCCAPE Analog PCI Express Voltage 1.455 1.5 1.545 V VCCAPCI[2:0] Analog PCI Voltages 1.455 1.5 1.545 VCCBGPE Analog Bandgap Voltage 2.425 2.5 2.575 VCCPE PCI Express Interface Voltage 1.46 1.5 1.55 V VCC33 PCI Bus Interface Voltage 3.0 3.3 3.6 V PTDP Thermal Design Power 8 W Notes 1 2 1. Transient tolerance 5 mV above 1 MHz at package pin under DC load conditions. 2. Transient tolerance 10 mV above 1 MHz at package pin under DC load conditions. 3.2 41110 Bridge Power Consumption Table 11 provides details on the maximum draw from the power planes by the 41110 Bridge for use in voltage regulation. Table 11. 41110 Bridge Maximum Voltage Plane Currents Power Plane Maximum Voltage Plane Current (Amps) Frequency (MHz) 133 100 66 Number of Slots 1 2 4 IVCC15 (core 1.5V) 1.68 1.61 1.55 IVCC15 (I/O 1.5V) 0.22 0.22 0.22 IVCCPE (PCI Express 1.5V) 0.69 0.69 0.69 IVCC33 (PCI/PCI-X Mode 1 3.3V) 1.05 1.14 1.22 Table 12 provides details on the maximum nominal draw from the power planes by the 41110 Bridge for use in thermal design. 16 Datasheet -- 41110 Bridge Table 12. 41110 Bridge Thermal Voltage Plane Currents Power Plane Table 13. 3.3 Thermal Voltage Plane Current (Amps) Frequency (MHz) 133 100 66 Number of Slots 1 2 4 IVCC15 (core 1.5V) 1.24 1.18 1.11 IVCC15 (I/O 1.5V) 0.22 0.22 0.22 IVCCPE (PCI Express 1.5V) 0.69 0.69 0.69 IVCC33 (PCI/PCI-X Mode 1 3.3V) 0.99 1.04 1.10 Watts Frequency (MHz) 133 100 66 Max Watts 6.9 7 7.1 Power Delivery Guidelines Please refer to the Intel(R) 41110 Serial to Parallel PCI Bridge Design Guide. 17 41110 Bridge -- Datasheet 3.4 Input Characteristic Signal Association Table 14. DC Characteristics Input Signal Association Symbol Signals Interrupt Signals: A_INTx (X = A-D)#, VIH1/VIL1 PCI Signals: A_AD[63:0], A_CBE[7:0]#, A_PAR, A_DEVSEL#, A_FRAME#, A_IRDY#, A_TRDY#, A_STOP#, A_PERR#, A_SERR#, A_REQ[5:0]#, A_M66EN, A_133EN, A_PCIXCAP, A_PAR64, A_REQ64#, A_ACK64#, Clock Signals (3.3 V Only): A_CLKI, Miscellaneous Signals: PERST# VIH2/VIL2 PCI Express Signals: REFCLK, REFCLK#, PETP[7:0], PETN[7:0], PE_RCOMP[1:0] VIH3/VIL3 SMB Signals: SMBDAT, SMBCLK 3.5 DC Input Characteristics Table 15. DC Input Characteristics 3.3 V Signal Symbol Parameter Unit Min Max VIL1 Input Low Voltage -0.5 0.35 VCC33 V VIH1 Input High Voltage 0.5 VCC33 VCC33 +0.5 V Symbol Parameter Max VIL2 Input Low Voltage N/A V VIH2 Input High Voltage N/A V VIL3 Input Low Voltage 0.6 V VIH3 Input High Voltage VCC33 + 0.5 V 3.6 DC Characteristic Output Signal Association Table 16. DC Characteristic Output Signal Association Symbol VOH1/VOL1 Signals PCI Signals: A_AD[63:0], A_CBE[7:0]#, A_PAR, A_DEVSEL#, A_FRAME#, A_IRDY#, A_TRDY#, A_STOP#, A_PERR#, A_M66EN, A_GNT[6:0]#, A_LOCK#, A_PAR64, A_REQ64#, A_ACK64#, PCI Clock Signals (3.3 V Only): A_CLKO[6:0], A_RST#, Miscellaneous Signals: CFGRST 18 VOH2/VOL2 PCI Express Signals: PERP[7:0], PERN[7:0] VOH3/VOL3 SMBus Signals: SMBDAT, SMBCLK Datasheet -- 41110 Bridge 3.7 DC Output Characteristics Table 17. DC Output Characteristic 3.3 V Signal Symbol Parameter Unit Min VOL1 Output Low Voltage VOH1 Output High Voltage Symbol 0.1VCC33 (5 V) Iout = 6 mA V 0.9VCC33 Parameter Notes Max (3.3 V) Iout = 1500 uA (5 V) Iout = -2 mA V Max (3.3 V) Iout = -500 uA Unit Notes VOL2 Output Low Voltage N/A V VOH2 Output High Voltage N/A V VOL3 Output Low Voltage 0.4 V IOL4=14 mA VOH3 Output High Voltage N/A V Open Drain 3.8 PCI Express Interface DC Specifications 3.8.1 Differential Transmitter (TX) DC Output Specifications Table 18 defines the DC specifications of parameters for the differential output at all transmitters (TXs). The parameters are specified at the component pins. Table 18. Differential Transmitter (TX) DC Output Specifications (Sheet 1 of 2) Symbol Parameter Min VTX-DIFFp-p Differential Peak to Peak Output Voltage 0.80 VTX-DE-RATIO De-Emphasized Differential Output Voltage (Ratio) -3.0 Nom -3.5 Max Units 1.2 V -4.0 dB Comments VTX-DIFFp-p = 2*|VTX-D+-VTX-D-| See Note 1. This is the ratio of the VTX-DIFFp-p of the second and following bits after a transition divided by the VTX-DIFFp-p of the first bit after a transition See Note 1. VTX-CM-ACp VTX-CM-ACp = CM-DC AC Peak Common Mode Output Voltage 20 mV |VTX-D+ + vTX-D-| / 2 - vTX- vTX-CM-DC = DC(avg) of / 2 during L0 |VTX-D+ + VTX-D-| See Note 1. VTX-CM-DCACTIVE-IDLEDELTA Absolute Delta of DC Common Mode Voltage During L0 and Electrical Idle |VTX-CM-DC [during L0] - VTX-CM-IdleDC[during electrical idle]| <= 100mv 0 100 mV VTX-CM-DC = DC(avg) of |VTX-D+ + VTX-D-| / 2 [electrical idle] See Note 1. 19 41110 Bridge -- Datasheet Table 18. Differential Transmitter (TX) DC Output Specifications (Sheet 2 of 2) |VTX-CM-DC-D+ [during L0] - VTX-CM-DC-D[During L0.]|<=25mV VTX-CM-DCLINE-DELTA Absolute Delta of DC Common Mode Voltage between D+ and D-. VTX-CM-DC-D+ = DC(avg) of |VTX-D+| 0 25 mV [during L0] VTX-CM-DC-D- = DC(avg) of |VTX-D-| [during L0] See Note 1. VTX-IDLEDIFFp VTX-RCVDETECT Electrical Idle Differential Peak Output Voltage 0 20 mV VTX-IDLE-DIFFp =|VTX-Idle-D+ -VTx-Idle-D|<=20mV See Note 1. The amount of voltage change allowed during Receiver Detection. 600 mV The total amount of voltage change that a transmitter can apply to sense whether a low impedance receiver is present. RLTX-DIFF Differential Return Loss 12 dB Measured over 50 MHz to 1.25 GHz See Note 2. RLTX-CM Common Mode Return Loss 6 dB Measured over 50 MHz to 1.25 GHz See Note 2. ZTX-DIFF-DC DC Differential TX Impedance 80 120 Ohms TX DC Differential Mode Low impedance 5k 20k Ohms TX DC High Impedance. IMP-DC Transmitter Common Mode High Impedance State (DC) CTX AC Coupling Capacitor 75 200 nF All transmitters shall be AC coupled. The AC coupling is required either within the media or within the transmitting component itself. ZTX-COMHigh- 100 1. Specified at the measurement point into a timing and voltage compliance test load as shown in Figure 2, "Compliance Test/Measurement Load" on page 23 and measured over any 250 consecutive TX UIs. (Also refer to the Transmitter Compliance Eye Diagram as shown in Minimum Transmitter Timing and Voltage Output Compliance Specification.) 2. The transmitter input impedance shall result in a differential return loss greater than or equal to 12 dB and a common mode return loss greater than or equal to 6 dB over a frequency range of 50 MHz to 1.25 GHz. This input impedance requirement applies to all valid input levels. The reference impedance for return loss measurements is 50W to ground for both the D+ and D- line (i.e., as measured by a Vector Network Analyzer with 50W probes - see Figure 2). Note that the series capacitors CTX is optional for the return loss measurement. 20 Datasheet -- 41110 Bridge 3.8.2 Differential Receiver (RX) DC Input Specifications Table 19 defines the DC specifications of parameters for all differential Receivers (RXs). The parameters are specified at the component pins. Table 19. Differential Receiver (RX) DC Input Specifications Symbol VRX-DIFFp-p VRX-CM-ACp Parameter Min Differential Input Peak to Peak Voltage 0.175 Nom Max Units 1.200 V Comments VRX-DIFFp-p = 2*|VRX-D+ - VRX-D-| See Note 1. VRX-CM-AC= |VRX-D+ + VRX-D-|/2- VRX-CM-DC AC Peak Common Mode Input Voltage 150 mV VRX-CM-DC = DC(avg) of |VRX-D++VRX-D-|/2 during L0 See Note 1. RLRX-DIFF Differential Return Loss 15 dB RLRX-CM Common Mode Return Loss 6 dB ZRX-DIFF-DC DC Differential Input Impedance 80 DC Input Common Mode Input Impedance 40 Initial DC Input Common Mode Input Impedance 5 ZRX-COM-DC ZRX-COM-INITIAL-DC ZRX-COM-HIGH-IMP-DC VRX-IDLE-DET-DIFFp-p 100 120 Ohms Measured over 50 MHz to 1.25 GHz See Note 2. Measured over 50 MHz to 1.25 GHz See Note 2 RX DC Differential Mode impedance. See Note 3. 50 60 Ohms RX DC Common Mode impedance 50 ?+/-20% tolerance. See Notes 1 and 3. 50 60 Ohms RX DC Common Mode impedance allowed when the receiver terminations are first powered on. See Note 4. Powered Down DC Input Common Mode Input Impedance 200 k Electrical Idle Detect Threshold 65 Ohms RX DC Common Mode impedance when the receiver terminations are not powered (i.e., no power). See Note 5. 175 mV VRX-IDLE-DET-DIFFp-p =2*|VRX-D+ VRX-D-| Measured at the package pins of the Receiver. 1. Specified at the measurement point and measured over any 250 consecutive UIs. The test load in Figure 2, "Compliance Test/Measurement Load" on page 23 should be used as the RX device when taking measurements (also refer to the Receiver Compliance Eye Diagram as shown in Figure 3, "Minimum Receiver Eye Timing and Voltage Compliance Specification" on page 23). If the clocks to the RX and TX are not derived from the same clock chip the TX UI must be used as a reference for the eye diagram. 2. The receiver input impedance shall result in a differential return loss greater than or equal to 15 dB and a common mode return loss greater than or equal to 6 dB over a frequency range of 50 MHz to 1.25 GHz. This input impedance requirement applies to all valid input levels. The reference impedance for return loss measurements for is 50 to ground for both the D+ and D- line (i.e., as measured by a Vector Network Analyzer with 50 probes - see Figure 2). Note: that the series capacitors CTX is optional for the return loss measurement. 3. Impedance during all operating conditions. 4. The Rx DC Common Mode Impedance that must be present when the receiver terminations are first enabled to ensure that the Receiver Detect occurs properly. Compensation of this impedance can start immediately and the (ZRX-COM-DC)RxDC Common Mode Impedance must be with in the specified range by the time Detect is entered. 21 41110 Bridge -- Datasheet 5. The Rx DC Common Mode Impedance that exists when the receiver terminations are disabled or when no power is present. This helps ensure that the Receiver Detect circuit will not falsely assume a receiver is powered on when it is not. Figure 1. Minimum Transmitter Timing and Voltage Output Compliance Specification There are two eye diagrams that must be met for the transmitter. Both eye diagrams must be aligned in time using the jitter median to locate the center of the eye diagram. The different eye diagrams will differ in voltage depending whether it is a transition bit or a de-emphasized bit. The eye diagram must be valid for any 250 consecutive UIs. An appropriate average TX UI must be used as the interval for measuring the eye diagram. 3.8.3 Compliance Test and Measurement Load The AC timing and voltage parameters must be verified at the measurement point, as specified by the device vendor within 0.2 inches of the package pins, into a test/measurement load shown in Figure 2. Note: 22 The allowance of the measurement point to be within 0.2 inches of the package pins is meant to acknowledge that package/board routing may benefit from D+ and D- not being exactly matched in length at the package pin boundary. If the vendor does not explicitly state where the measurement point is located, the measurement point is assumed to be the D+ and D-package pins. Datasheet -- 41110 Bridge Figure 2. Compliance Test/Measurement Load The test load is shown at the transmitter package reference plane, but the same Test/Measurement load is applicable to the receiver package reference plane. CTX is an optional portion of the measurement test load. The measurement should be taken on the opposite side of the capacitor from the package, and the value of the CTX must be in the range of 75 nF to 200 nF. . Figure 3. Minimum Receiver Eye Timing and Voltage Compliance Specification The RX eye diagram must be aligned in time using the jitter median to locate the center of the eye diagram. The eye diagram must be valid for any 250 consecutive UIs. An appropriate average TX UI must be used as the interval for measuring the eye diagram. 23 41110 Bridge -- Datasheet 3.8.4 PCI and PCI-X Interface DC Specifications Table 20 summarizes the DC specifications for 3.3V signaling. Table 20. DC Specifications for PCI and PCI-X 3.3 V Signaling Symbol Parameter Min Max Units VCC33 Supply Voltage 3.0 3.6 V Vih Input High Voltage 0.5 VCC33 VCC33 +0.5 V Vil Input Low Voltage -0.5 0.3VCC33 V Vipu Input Pull-up Voltage 0.7VCC33 Iil Input Leakage Current Voh Output High Voltage Vol Output Low Voltage Cin Input Pin Capacitance Notes V 10 A 0 < Vin < VCC33 V Iout = -500 A 0.1VCC33 V Iout = 1500 A 10 pF 0.9VCC33 5 Condition 1 2 Cclk A_CLKIN Pin Capacitance 8 pF CIDSEL IDSEL Pin Capacitance 8 pF 3 Lpin Pin Inductance 20 nH 4 IOff A_PME# input leakage 1 A - Vo 3.6 VCC33 off or floating 5 1. Input leakage currents include hi-Z output leakage for all bi-directional buffers with tri-state outputs. 2. Absolute maximum pin capacitance for a PCI/PCIX input except A_CLKIN and A_IDSEL. 3. For conventional PCI only, lower capacitance on this input-only pin allows for non-resistive coupling to A_AD[xx]. PCI-X configuration transactions drive the AD bus four clocks before A_FRAME# asserts (see Section 2.7.2.1, "Configuration Transaction Timing," in the PCI-X Protocol Addendum to the PCI Local Bus Specification Revision 2.0a). 4. For conventional PCI, this is a recommendation, not an absolute requirement. For PCI-X, this is a requirement. 5. This input leakage is the maximum allowable leakage into the A_PME# open drain driver when power is removed from VCC33 of the component. This assumes that no event has occurred to cause the device to attempt to assert A_PME#. 24 Datasheet -- 41110 Bridge 3.8.4.1 Input Clock DC Specifications Table 21. DC Specification for Input Clock Signals Symbol CLK100 Parameter Input Low Voltage Min Max -0.5 Units 0.8 V CLK100 Input High Voltage 2.0 VCC3.3 + 0.5 V CLK133 Input Low Voltage -0.5 0.8 V CLK133 Input High Voltage 2.0 VCC3.3 + 0.5 V Units Condition 3.8.4.2 Output Clock DC Specifications Table 22. DC Specification for Output Clock Signals Symbol Parameter CLK33 Output Low Voltage CLK33 Output High Voltage CLK66 Output Low Voltage CLK66 Output High Voltage CLK100 Output Low Voltage CLK100 Output High Voltage CLK133 Output Low Voltage CLK133 Output High Voltage 2.4 0.4 2.4 0.4 2.4 0.4 2.4 AC Specifications 3.9.1 PCI and PCI-X AC Characteristics Table 23. Conventional PCI 3.3V AC Characteristics Ioh(AC) Parameter Switching Current High Iol(AC) Switching Current Low Ich Icl Max 0.4 3.9 Sym Min Condition Min Vout = 0.7VCC33 Vout = 0.3VCC33 V Iol = 1 mA V Ioh= -1 mA V Iol = 1 mA V Ioh= -1 mA V Iol = 1 mA V Ioh= -1 mA V Iol = 1 mA V Ioh= -1 mA Max -32VCC33 -12VCC33 Vout = 0.18VCC33 Unit mA mA 38VCC33 1 mA Vout = 0.6VCC33 16VCC33 mA High Clamp Current VCC33 + 4 > Vin VCC33 + 1 25 + (Vin - VCC33 - 1) / 0.015 mA Low Clamp Current -3 < Vin -1 -25 + (Vin + 1) / Note 1 mA 0.015 slewr Output Rise Slew Rate 0.3VCC33 to 0.6VCC33 1 4 V/ns 2 slewf Output Fall Slew Rate 0.6VCC33 to 0.3VCC33 1 4 V/ns 2 25 41110 Bridge -- Datasheet 1. In conventional PCI switching, current characteristics for A_REQ# and A_GNT# are permitted to be one half of that specified here; i.e., half size drivers may be used on these signals. This specification does not apply to CLK and RSTIN# which are system outputs. "Switching Current High" specifications are not relevant to A_SERR# which is an open drain output. 2. This parameter is to be interpreted as the cumulative edge rate across the specified range rather than the instantaneous rate at any point within the transition range. For more details on slew rate measurement conditions please refer to the PCI-X Electrical and Mechanical Addendum to the PCI Local Bus Specification, Revision 2.0a Table 24. PCI-X 3.3V AC Characteristics Sym Parameter Condition Min -74(VCC33 Vout) 0 < VCC33 - Vout 3.6V Ioh(AC) Switching Current High Icl Ich Switching Current Low Low Clamp Current Unit Note mA 0 < VCC33 - Vout 1.2V -32 (VCC33 - Vout) mA 1 1.2V < VCC33 - Vout 1.9V -11 (VCC33 Vout) - 25.2 mA 1 1.9V < VCC33 - Vout 3.6V -1.8 (VCC33 Vout) - 42.7 mA 1 0 Vout 3.6V Iol(AC) Max 100Vout mA 0 < Vout 1.3V 48Vout 1 1.3V < Vout 3.6V 5.7Vout + 55 1 -3V < Vin 0.8875V -40 + (Vin + 1) / 0.005 mA -0.8875V < Vin -0.625V -25 + (Vin + 1) / 0.015 mA 0.8875V < Vin - VCC33 -4V 40 + (Vin - VCC33 - 1) / 0.005 mA 0.625V < Vin - VCC33 0.8875V 25 + (Vin - VCC33 - 1) / 0.015 mA High Clamp Current slewr Output Rise Slew Rate 0.3VCC33 to 0.6VCC33 1 4 V/ns 2 slewf Output Fall Slew Rate 0.6VCC33 to 0.3VCC33 1 4 V/ns 2 1. In conventional PCI switching, current characteristics for A_REQ# and A_GNT# are permitted to be one half of that specified here; i.e., half size drivers may be used on these signals. This specification does not apply to CLK and RST# which are system outputs. "Switching Current High" specifications are not relevant to A_SERR#, which is an open drain output. 2. This parameter is to be interpreted as the cumulative edge rate across the specified range rather than the instantaneous rate at any point within the transition range. For more details on slew rate measurement conditions please refer to the PCI-X Electrical and Mechanical Addendum to the PCI Local Bus Specification, Revision 2.0a. 3.10 Voltage Filter Specifications The 41110 Bridge requires voltage filtering to reduce noise on critical voltage planes. There are two filter types necessary on the platform: 26 Datasheet -- 41110 Bridge * Analog Voltage Filter (PCI-Express and PCI) * Bandgap Filter Note: For filter specifications, refer to the Intel(R) 41110 Serial to Parallel PCI Bridge Design Guide. 3.11 VCC15 and VCC33 Voltage Requirements The 41110 Bridge requires that the VCC33 voltage rail be equal to or no less than 0.5V below VCC15 (absolute voltage value) at all times during 41110 Bridge operation, including during system power up and power down. In other words, the following must always be true: VCC33 (VCC15 -0.5V) Figure 4 graphically illustrates this requirement. This can be accomplished by placing a diode (with a voltage drop < 0.5V) between VCC15 and VCC33. Anode will be connected to VCC15 and cathode will be connected to VCC33. Figure 4. Voltage Requirements VCC33 versus VCC15 27 41110 Bridge -- Datasheet 3.12 Timing Specifications 3.12.1 PCI Express Interface Timing 3.12.1.1 Differential Transmitter (TX) AC Output Specifications Table 25 defines the AC specifications of parameters for the differential output at all transmitters (TXs). The parameters are specified at the component pins. Table 25. Differential Transmitter (TX) AC Output Specifications Symbol UI Parameter Unit Interval Min 399.88 Nom 400 Max 400.12 Units ps Comments Each UI is 400 ps +/300 ppm. UI does not account for SSC dictated variations. See Note 1. TTX-EYE Minimum TX Eye Width 0.70 UI The maximum transmitter jitter can be derived as TTX-MAXJITTER = 1 - TTX-EYE = .3 UI See Notes 2 and 3. TTX-EYE-MEDIAN-to-MAX-JITTER Maximum time between the jitter median and maximum deviation for the median TTX-RISE, TTX-FALL D+/D- TX Output Rise/Fall Time TTX-IDLE-MIN Minimum time spent in Electrical Idle TTX-IDLE-SETTO-IDLE TTX-IDLE-RCVDETECT-MAX LTX-SKEW UI Jitter is defined as the measurement variation of the crossing points (VTX-DIFFp-p = 0V) in relation to an appropriate average TX UI. See Notes 2 and 3. 0.125 UI See Notes 2 and 4. 50 UI Minimum time a transmitter must be in electrical idle. 0.15 Maximum time to transition to a valid Electrical Idle after sending an Electrical Idle ordered-set 20 UI After sending an electrical idle orderedset, the transmitter must meet all electrical idle specifications within this time. Maximum time spent in Electrical Idle before initiating a receiver detect sequence. 100 ms Maximum time spent in Electrical Idle before initiating a receiver detect sequence. Lane-to-Lane Output Skew 500 ps Between any two Lanes within a single Transmitter. 1. No test load is necessarily associated with this value. 2. Specified at the measurement point into a timing and voltage compliance test load as shown in Figure 2, "Compliance Test/Measurement Load" on page 23 and measured over any 250 consecutive TX UIs. (Also 28 Datasheet -- 41110 Bridge refer to the Transmitter Compliance Eye Diagram as shown in Minimum Transmitter Timing and Voltage Output Compliance Specification.) 3. A TTX-EYE = 0.70 UI provides for a total sum of deterministic and random jitter budget of TTX-JITTER-MAX = 0.30 UI for the transmitter collected over any 250 consecutive TX UIs. The TTX-EYE-MEDIAN-to-MAX-JITTER specification ensures a jitter distribution in which the median and the maximum deviation from the median is less than half of the total TX jitter budget collected over any 250 consecutive TX UIs. It should be noted that the median is not the same as the mean. The jitter median describes the point in time where the number of jitter points on either side is approximately equal as opposed to the averaged time value. 4. Measured between 20-80% at Transmitter package pins into a test load as shown in Figure 2 for both VTX-D+ and VTX-D-. 3.12.1.2 Differential Receiver (RX) AC Input Specifications Table 26 defines the AC specifications of parameters for all differential Receivers (RXs). The parameters are specified at the component pins. Table 26. Differential Receiver (RX) AC Input Specifications Symbol UI TRX-EYE Parameter Unit Interval Minimum Receiver Eye Width Min 399.88 Nom 400 Max 400.12 0.4 Units ps UI Comments The UI is 400 ps +/-300 ppm. UI does not account for SSC dictated variations. See Note 1. The maximum interconnect media and transmitter jitter that can be tolerated by the receiver can be derived asTRX-MAX-JITTER =1 -TRXEYE =0.6 UI See Notes 2 and 3. TRX-EYEMEDIAN-to- MAX-JITTER TRX-IDLE-DETDIFF- ENTERTIME LRX-SKEW Maximum time between the jitter median and maximum deviation from the median. Unexpected Electrical Idle Enter Detect Threshold Integration Time Total Skew 0.3 UI Jitter is defined as the measurement variation of the crossing points (VRX- DIFFp-p = 0 V) in relation to an appropriate average TX UI. See Notes 2 and 3. 10 20 ms An unexpected electrical idle (VRXmust be recognized no longer than TRXIDLE-DET- DIFF-ENTERTIME to signal an unexpected idle condition. ns Across all Lanes on a port. This includes variation in the length of a skip ordered-set (e.g., COM and 1 to 5 SKP symbols) at the RX as well as any delay differences arising from the interconnect itself. DIFFp-p