Redpine Signals, Inc. Page 2
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Overview
Overview
The RS9110-N-11-26 module from
Redpine’s Connect-io-n™ family of
products is a complete dual band
(2.4/5GHz) IEEE 802.11abgn based
wireless device server that directly
provides a wireless interface to any
equipment with a serial or SPI interface
for data transfer. It integrates a MAC,
baseband processor, dual band RF
transceiver with power amplifier and
diplexer and antenna or antenna
connector; and all WLAN protocol and
configuration functionality, networking
stack in embedded firmware to make an
802.11n WLAN solution for a variety of
applications.
Applications:
Seamless Wi-Fi Connectivity for
Application Processors
Point of Sale Terminals
Metering
Security Cameras & Surveillance
Equipment
Warehousing
Logistics and Freight Management
Digital Picture Frames
Several Medical Applications including
Patient Monitoring, Remote Diagnostics,
etc.
Device Features:
Compliant to 802.11a/b/g and single
stream 802.11n
2.4/5 GHz, 802.11n RF transceiver with
power amplifier
Highly integrated 2.4 GHz/5 GHz
transceiver with direct conversion
architecture
Does not require any WLAN driver on the
host processor
Supports WPA2-PSK, WEP (64 and 128
bits) and TKIP modes of security in
infrastructure mode
Supports WEP (64 and 128 bits) modes of
security in ad-hoc mode
Host interface through UART and SPI
Terminates TCP and UDP connections
Integrated antenna, frequency reference.
Option for external antenna through u.FL
connector
Ultra low power operation with power
save modes
Ad-hoc and infrastructure modes for
maximum deployment flexibility
Single supply 3.1 to 3.6 V operation
Device dimensions : 28 mm x 40 mm x 4.5mm
RS9110-N-11-26 System Block Diagram
RS9110-N-11-26
WLAN Subsystem
RF
Transceiver
+
PA
Balun
Flash
T/R
Switch
3.3V
5G
RS9110
(TCP, UDP,
WLAN Stack)
Balun
Diplexer
2.4G
Diplexer
5GHz
2.4 GHz
UART/SPI Select
RESET XO LED Flash
Reset
UART
SPI i/f
Host Processor
Applications
Interrupt
Redpine Signals, Inc. Page 3
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Table of Contents
1: Detailed Feature List ............................................................ 7
1.1: Host Interfaces ...................................................................... 7
1.2: WLAN .................................................................................... 7
1.2.1: MAC .............................................................................................. 7
1.2.2: Baseband Processing .................................................................... 7
1.2.3: RF ................................................................................................. 7
1.3: Networking Protocols ............................................................ 7
1.4: Configuration......................................................................... 8
1.5: Software ............................................................................... 8
2: Package Description ............................................................. 9
2.1: Top View ............................................................................... 9
2.2: Bottom View .......................................................................... 9
2.3: Package Dimensions .............................................................10
2.4: PCB Landing Pattern .............................................................11
2.5: Recommended Reflow Profile ................................................12
2.6: Baking Instructions ..............................................................12
3: Pin Description ................................................................... 13
3.1: Module Pinout.......................................................................13
3.2: Pin Description .....................................................................14
4: Electrical Characteristics .................................................... 18
4.1: Absolute Maximum Ratings ...................................................18
4.2: Recommended Operating Conditions .....................................18
4.3: DC Characteristics – Digital I/O Signals ................................18
4.4: AC Characteristics .................................................................19
4.4.1: SPI Interface .............................................................................. 19
4.4.2: Reset Sequence and Timing ........................................................ 20
4.5: Performance Specifications ...................................................20
4.5.1: Wireless Specifications ............................................................... 20
4.5.2: Receive Characteristics ............................................................... 21
4.5.2.1: Sensitivity ............................................................................. 21
4.5.2.2: Range ................................................................................... 21
4.6: Standards Compliance ..........................................................21
5: Software Details ................................................................. 23
5.1: Host .....................................................................................24
5.1.1: UART........................................................................................... 24
5.1.2: SPI ............................................................................................. 24
5.1.3: Thin SPI Driver ........................................................................... 24
5.2: RS9110-N-11-26 ...................................................................24
5.2.1: SPI ............................................................................................. 24
5.2.2: UART........................................................................................... 24
5.2.3: Host Abstraction Layer (HAL) ..................................................... 25
5.2.4: Wireless Control Block (WCB) ..................................................... 25
5.2.4.1: Wi-Fi Control frames ............................................................. 25
5.2.4.2: TCP/IP Control frames .......................................................... 25
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
5.2.5: Station Management Entity (SME) .............................................. 25
5.2.6: WPA Supplicant .......................................................................... 25
5.2.7: Power Save Modes ...................................................................... 25
5.2.7.1: Power mode 0 ....................................................................... 25
5.2.7.2: Power mode 1 ....................................................................... 26
5.2.7.3: Power mode 2 ....................................................................... 26
6: Ordering Information ......................................................... 28
6.1: Contact Information .............................................................28
6.2: Device Ordering Information .................................................28
6.3: Collateral ..............................................................................29
Command Reference (AT commands and SPI commands) ...... 30
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Table of Figures
Figure 1: Top View of the Module ................................................................. 9
Figure 2: Bottom View of the Module ........................................................... 9
Figure 3: Package Dimensions.................................................................... 10
Figure 4: PCB Landing Pattern.................................................................... 11
Figure 5: Reflow Profile .............................................................................. 12
Figure 6: Pinout of the Module ................................................................... 13
Figure 7: Interface Timings – SPI Interface Low-speed Mode .................... 19
Figure 8: Reset Pin Timing Diagram ........................................................... 20
Figure 9: RS9110-N-11-26 Software Architecture Block Diagram .............. 23
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
List of Tables
Table 1: Absolute Maximum Ratings........................................................... 18
Table 2: Recommended Operating Conditions ............................................ 18
Table 3: Input/Output DC Characteristics .................................................. 19
Table 4: AC Characteristics – SPI Interface Low-speed Mode ..................... 19
Table 5: Wireless Specification ................................................................... 21
Table 6: Receive Sensitivity ........................................................................ 21
Table 7: Device Ordering Information ........................................................ 29
Redpine Signals, Inc. Page 7
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
1: Detailed Feature List
1.1: Host Interfaces
UART
o The UART forms the physical layer of the TCP/IP stack, transferring
frames between a Host processor and the module.
o The UART interface supports standard baud rates from 9600 to
3686400 bps
o AT Command Interface for configuring and operating the module
SPI
o Standard 4-wire SPI
o Operation up to a maximum clock speed of 25MHz
1.2: WLAN
1.2.1: MAC
Conforms to IEEE 802.11a/b/g/n standards for MAC
Dynamic selection of fragment threshold, data rate, and antenna
depending on the channel statistics
Hardware accelerated implementation of WEP 64/128-bit and AES
Infrastructure and Ad-hoc modes
WPA-PSK and WPA2-PSK supplicant
1.2.2: Baseband Processing
Supports DSSS (1, 2 Mbps) and CCK (5.5, 11 Mbps) modes
Supports all OFDM data rates (6, 9, 12, 18, 24, 36, 48, and 54 Mbps)
Supports IEEE 802.11n single-stream modes with data rates up to 65
Mbps
Supports long, short, and HT preamble modes
High-performance multipath compensation in OFDM, DSSS, and CCK
modes
1.2.3: RF
Highly integrated 2.4 GHz/5 GHz transceiver and Power Amplifier with
direct conversion architecture
Integrated frequency reference and antenna
1.3: Networking Protocols
TCP
UDP
ARP
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
ICMP
DHCP
The RS9110-N-11-26 comes with flexible frameworks to enable usage in
various application scenarios, viz., high throughput, more network features,
etc. Please contact Redpine for addition of network features like HTTP server.
1.4: Configuration
The RS9110-N-11-26 module can be configured through UART or SPI. The
following are some of the commands that can be given to the module:
Scan
Connect
Pre-shared Keys
SSID of hidden WLAN networks
DHCP Enable/Disable
Create/Join an IBSS network
Open/Close sockets for TCP, UDP, Listening TCP
1.5: Software
Sample Host driver for SPI on Linux
Sample Host driver for UART on Windows
Configuration and management GUI for Windows XP for UART
Embedded software for complete WLAN functionality including 802.11n
aggregation and Block-ACK, auto rate adaptation, security and also
complete network stack and applications including TCP, UDP, ARP, IPv4,
DHCP
Redpine Signals, Inc. Page 9
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
2: Package Description
2.1: Top View
Figure 1: Top View of the Module
2.2: Bottom View
Figure 2: Bottom View of the Module
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
2.3: Package Dimensions
Figure 3: Package Dimensions
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
2.4: PCB Landing Pattern
Figure 4: PCB Landing Pattern
Module height = 4.5 mm
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
2.5: Recommended Reflow Profile
Figure 5: Reflow Profile
Note: The profile shown is based on SAC 305 solder (3% silver, 0.5%
copper). We recommend the ALPHA OM-338 lead-free solder paste. This
profile is provided mainly for guidance. The total dwell time depends on the
thermal mass of the assembled board and the sensitivity of the components
on it.
2.6: Baking Instructions
The RS9110-N-11-26 package is moisture sensitive and devices must be
handled appropriately. After the devices are removed from their vacuum
sealed packs, they should be taken through reflow for board assembly within
168 hours at room conditions, or stored at under 10% relative humidity. If
these conditions are not met, the devices must be baked before reflow. The
recommended baking time is nine hours at 125 C.
Redpine Signals, Inc. Page 13
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
3: Pin Description
3.1: Module Pinout
Figure 6: Pinout of the Module
SPI_CLK
12
NC
44
RESET_n
3
NC
6
SPI_MISO
11
NC
48
NC
20
VIN33
19
SPI_CS
17
GND
4
GND
52
VIN33
18
GND
13
NC
47
NC
42
GND
2
SPI_MOSI
10
GND
1
NC
27
GND
26
INTR
15
GND
14
NC
9
MODE_SEL_1
5
GND
7
NC
45
NC
49
NC
50
NC
51
NC
23
NC
46
NC
8
NC
21
UART_RX
24
NC
22
NC
43
SD3
16
NC
28
NC
29
NC
30
NC
31
NC
32
NC
33
NC
34
NC
35
NC
36
NC
37
NC
38
NC
39
NC
40
NC
41
UART_TX
25
NC
53
NC
54
NC
55
NC
56
NC
57
NC
58
NC
59
JNC
60
JPD1
61
JPD2
62
JPD0
63
GND
64
RS9110-N-11-26 Module
Redpine Signals, Inc. Page 14
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
3.2: Pin Description
Pin No.
Pin Name
Direction
Type
Description
1
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
2
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
3
RESET_n
Input
LVCMOS
Power on reset. Active low, and
required to be active for at least
10 ms after power on, to reset the
module
4
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
5
MODE_SEL_1
Input
LVCMOS
2mA
SPI Mode: Connect pull down
(3.9K Ohms to 4.7K Ohms).
UART Mode: No connect
6
NC
-
No connect
7
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
8
NC
-
No connect
9
NC
-
No connect
10
SPI_MOSI
Input
LVCMOS
8mA
SPI Data Input. In UART mode,
connect pull-down (1K to 10K
Ohms)
11
SPI_MISO
Output
LVCMOS
8mA
SPI Data Output. No connect in
UART mode.
12
SPI_CLK
Input
LVCMOS
SPI clock input. In UART mode,
connect pull-down (1K to 10K
Ohms)
13
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
14
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
15
INTR
Output
LVCMOS
8mA
Interrupt to the host. Active high,
level triggered. Asserted by the
module when:
1.The module has to transmit data
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Pin No.
Pin Name
Direction
Type
Description
to the host through SPI.
2.When the module wakes up from
sleep mode
16
SD3
-
No connect in SPI mode. In UART
mode, connect pull-down (1K to
10K Ohms)
17
SPI_CS
Input
LVCMOS
8mA
Active low SPI chip select. In UART
mode, connect pull-down (1K to
10K Ohms)
18
VIN33
Power
3.3V Power supply, Recommend
connecting these pins to a copper
fill with bypassed capacitors as
indicated in reference schematics.
10mV pk-pk maximum noise
allowed.
19
VIN33
Power
3.3V Power supply, Recommend
connecting these pins to a copper
fill with bypassed capacitors as
indicated in reference schematics.
10mV pk-pk maximum noise
allowed.
20
NC
-
No connect
21
NC
-
No connect
22
NC
-
No connect
23
NC
-
No connect
24
UART_RX
Input
LVCMOS
4mA
UART input. No connect in case of
SPI
25
UART_TX
Output
LVCMOS
4mA
UART output. No connect in case of
SPI
26
GND
Ground
Ground
27
NC
-
No connect
28
NC
-
No connect
29
NC
-
No connect
30
NC
-
No connect
31
NC
-
No connect
32
NC
-
No connect
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Pin No.
Pin Name
Direction
Type
Description
33
NC
-
No connect
34
NC
-
No connect
35
NC
-
No connect
36
NC
-
No connect
37
NC
-
No connect
38
NC
-
No connect
39
NC
-
No connect
40
NC
-
No connect
41
NC
-
No connect
42
NC
-
No connect
43
NC
-
No connect
44
NC
-
No connect
45
NC
-
No connect
46
NC
-
No connect
47
NC
-
No connect
48
NC
-
No connect
49
NC
-
No connect
50
NC
-
No connect
51
NC
-
No connect
52
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
53
NC
-
No connect
54
NC
-
No connect
55
NC
-
No connect
56
NC
-
No connect
57
NC
-
No connect
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Pin No.
Pin Name
Direction
Type
Description
58
NC
-
No connect
59
NC
-
No connect
60
JNC
-
No connect
61
JPD1
-
Connect pull down of 1K Ohms
62
JPD2
-
Connect pull down of 1K Ohms
63
JPD0
-
Connect pull down of 1K Ohms
64
GND
Ground
Ground. Connect all the GND pins
directly to a ground plane or
copper ground fill.
Notes:
Please contact Redpine for application notes or for customization of a
solution.
Redpine Signals, Inc. Page 18
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
4: Electrical Characteristics
4.1: Absolute Maximum Ratings
Absolute maximum ratings in the table given below are the values beyond
which the device could be damaged. Functional operation at these conditions
or beyond these conditions is not guaranteed.
Parameter
Symbol
Value
Units
Input Supply voltage
Vin
3.6
V
Supply voltage for I/O Rail
DVDD33
3.6
V
Supply Voltage for the RF
VRF33
3.6
V
RF Input Level
RFIN
10
DBm
Storage temperature
Tstore
-65 to
150
C
PA Output Load Mismatch
10:1
Electrostatic discharge tolerance (MM)
ESDMM
200
V
Electrostatic discharge tolerance (CDM)
ESDCDM
500
V
Electrostatic discharge tolerance (HBM)
ESDHBM
2000
V
Table 1: Absolute Maximum Ratings
4.2: Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Units
Input supply voltage
VIN
3.1
3.3
3.6
V
Supply voltage for I/O Rail
DVDD33
3.1
3.3
3.6
V
Supply voltage for the RF
VRF33
3.1
3.3
3.6
V
Ambient temperature
Ta
-40
25
85
C
Table 2: Recommended Operating Conditions
4.3: DC Characteristics – Digital I/O Signals
Parameter
Min.
Typ.
Max.
Units
Input high voltage
2
-
5.5
V
Input low voltage
-0.3
-
0.8
V
Output low voltage
-
-
0.4
V
Output high voltage
2.4
-
-
V
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Parameter
Min.
Typ.
Max.
Units
Input leakage current (at 3.3V or 0V)
-
-
10
A
Tristate output leakage current (at 3.3V
or 0V)
-
-
10
A
Table 3: Input/Output DC Characteristics
4.4: AC Characteristics
4.4.1: SPI Interface
Parameter
Symbol
Min.
Typ.
Max.
Units
SPI_CLK Frequency
Fspi
0
25
MHz
SPI_CS to output valid
Tcs
3.5
-
7.5
ns
SPI CS, setup time
Tcst
2
-
SPI_MOSI, setup time
Tsd
1
-
ns
SPI_MOSI, hold time
Thd
1.5
-
ns
SPI_MISO, clock to output
valid
Tod
4
-
9.25
ns
Table 4: AC Characteristics – SPI Interface
SPI_CLK
SPI_CS
SPI_MOSI
SPI_MISO
Tcst
Tod
Tsd
Thd
Tcs
SPI_CS
SPI_MISO
Figure 7: Interface Timings – SPI Interface
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
4.4.2: Reset Sequence and Timing
Following diagram shows the timing requirement for Reset_n input in two
scenarios. This timing is valid for both UART and SPI based modules. The
crystal oscillator output should be stable before releasing reset.
A. Powerup
B. Giving hard reset during module operation
Figure 8: Reset Pin Timing Diagram
4.5: Performance Specifications
4.5.1: Wireless Specifications
Feature
Description
Frequency Band
2.400 – 2.500 GHz (Low band)
4.900 – 5.850 GHz (High Band)
Modulation
OFDM with BPSK, QPSK, 16-QAM, and 64-QAM
802.11b with CCK and DSSS
Supported Data Rates
802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps
802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
802.11b: 1, 2, 5.5, 11 Mbps
802.11n Features
MCS 0-7, STBC, RIFS, Greenfield Protection
A-MPDU, A-MSDU Aggregation with Block-ack
Typical Transmit Power
(+/- 2 dBm) ‘bg’ Mode
17 dBm for 802.11b DSSS
17 dBm for 802.11b CCK
3.3V input
supply
20msec
A
1msec
B
Reset_n
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Feature
Description
15 dBm for 802.11g/n OFDM
Typical Transmit Power
(+/- 2 dBm) ‘a’ Mode
12 dBm
Table 5: Wireless Specification
4.5.2: Receive Characteristics
4.5.2.1: Sensitivity
Data Rate (bg Mode)
Typical Sensitivity (+/- 1.5 dBm)
1 Mbps
-94.0 dBm (< 8% PER)
2 Mbps
-89.0 dBm (< 8% PER)
11 Mbps
-86.0 dBm (< 8% PER)
6 Mbps
-89.0 dBm (<10% PER)
54 Mbps
-74.0 dBm (< 10% PER)
65 Mbps
-71.0 dBm (< 10% PER)
Data Rate (a Mode)
Typical Sensitivity (+/- 1.5 dBm)
6 Mbps
-88.0 dBm (<10% PER)
54 Mbps
-72.0 dBm (< 10% PER)
65 Mbps
-69.0 dBm (< 10% PER)
Table 6: Receive Sensitivity
4.5.2.2: Range
Range varies with the conditions under with wireless communication is
sought. For large office environments, in the presence of obstacles, a range of
over 30 metres is observed, while in open, line-of-sight environments, over
300 metres is observed, with several Mbps throughput in both cases.
4.6: Standards Compliance
RS9110-N-11-26 is compliant with the requirements of IEEE 802.11b,
802.11g, 802.11a, 802.11j, and 802.11n that include the following:
Transmit Spectral Mask
Transmit Center Frequency Leakage
Transmit Center Frequency Accuracy
Symbol Clock Frequency Tolerance
Transmit Constellation error
Receiver Adjacent Channel Interference Rejection
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
Receiver Non-adjacent Channel Rejection
Receiver Minimum Input Level
Receiver Maximum Input Level
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
5: Software Details
The following figure depicts the software architecture of the RS9110-N-11-26
module.
SLIP
UART
HOST PROCESSOR (HOST)
RS9110-N-11-26
Host Abstraction Layer
Station Managment Entity
802.11 a/b/g/n MAC
TCP/IP
Wireless Control Block
SPI
WPA/WPA-2
UART Driver
Thin
SPI Driver
UARTSPI
Application
Interrupt
Figure 9: RS9110-N-11-26 Software Architecture Block Diagram
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RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
As shown in the figure above, the RS9110-N-11-26 module is integrated with
the Host using either UART or SPI interfaces. The transmission and reception
of the data to/from the Host depends on the interface used to connect the
module as briefed below.
UART mode:
The Host transmits/receives raw data using UART interface when the RS9110-
N-11-26 module is configured for UART mode. The access to the TCP/IP stack
in the Wi-Fi module through the UART is provided through AT commands.
SPI mode:
Host transmits/receives raw data using SPI interface when the RS9110-N-11-
26 module is configured for SPI mode. A thin driver on the Host takes care of
interacting with the Wi-Fi module through the SPI Host interface.
5.1: Host
The Host is any system that has applications being executed and either a
UART or SPI interface. The Host configures the RS9110-N-11-26 module
through AT commands.
5.1.1: UART
The UART on the Host side provides an interface for the host to access the
Wi-Fi module. UART is used to configure various parameters of the RS9110-
N-11-26 module and also to send and receive data over the network by
accessing the TCP/IP stack in the RS9110-N-11-26 module.
5.1.2: SPI
The SPI on the Host side provides an interface for the host to access the Wi-Fi
module. SPI on the Host acts as the master.
5.1.3: Thin SPI Driver
The SPI driver on the Host is a thin driver through which the applications
interact with the Wi-Fi module. The SPI driver uses the SPI host controller
driver on the Host to send/receive the data to/from the RS9110-N-11-26
module and also to configure the same over the SPI interface.
5.2: RS9110-N-11-26
The RS9110-N-11-26 module incorporates Wi-Fi, TCP/IP, DHCP, ARP, etc.,
and OS functionality to act as a wireless device server. It handles all the
network connectivity functions. The following sections describe the software
components of the RS9110-N-11-26 module in brief.
5.2.1: SPI
The SPI on the RS9110-N-11-26 acts the SPI slave. It is a standard 4-wire
SPI and can support a maximum frequency of 25MHz.
5.2.2: UART
The UART on the RS9110-N-11-26 module is the physical interface which
transmits/receives the data from the Host. It supports variable baud rates
Redpine Signals, Inc. Page 25
RS9110-N-11-26 Datasheet
Version 1.7, 04 Aug, 2011
from 9600 to 4608000 bps. There is support for AT commands to configure
and operate the module through UART interface.
5.2.3: Host Abstraction Layer (HAL)
The HAL abstracts the lower layers in the host interface with which the
RS9110-N-11-26 module is connected. The HAL interacts with the Wireless
Control Block layer for the processing of the frames obtained from or destined
to the Host.
5.2.4: Wireless Control Block (WCB)
The data from/to the Host is classified as Wi-Fi specific frames and TCP/IP
specific frames. The WCB layer processes the frame obtained and acts
accordingly. The functionality of the WCB module depends on the type of the
frame and the direction of the frame (in case of TCP/IP) as described below.
5.2.4.1: Wi-Fi Control frames
The WCB interprets the Wi-Fi control information from the Host and interacts
with the SME (Station Management Entity). Configuration of the RS9110-N-
11-26 module from the Host for Wi-Fi access is through AT commands. The
Wi-Fi AT commands set or get the values of various configurable parameters
for providing the Wi-Fi access.
5.2.4.2: TCP/IP Control frames
If the frames from the host are interpreted as TCP/IP specific frames then the
WCB interacts with the TCP/IP stack.
5.2.5: Station Management Entity (SME)
The SME is the core layer which manages the Wi-Fi connectivity. The SME
maintains the state machine to detect the activity on the Wi-Fi network and
indicates to the user accordingly. It also performs re-association to the
configured access point in Infrastructure mode. It interacts with the WPA
supplicant if Security is enabled in the Wi-Fi network.
5.2.6: WPA Supplicant
The WPA supplicant is used to initiate the 802.1x/EAccess Point
authentication if WPA/WPA2-PSK is used as the security parameter. It also
plays a major part in performing the 4-way handshake to derive the PTK in
WPA/WPA2-PSK modes.
5.2.7: Power Save Modes
The RS9110-N-11-2X module supports three power modes. The Host can
switch among the power modes depending on the Wi-Fi connection status as
defined in this section.
5.2.7.1: Power mode 0
In this mode, power save is disabled in the RS9110-N-11-2X module. The
module will be in Power Mode 0 by default.
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5.2.7.2: Power mode 1
The RS9110-N-11-2X module powers off the Baseband, RF and also the Core
Control block in this mode. To power off the Core Control block, the RS9110-
N-11-2X module sends request to Host for permission to sleep.
Once the permission is received the Core Control block is powered off. The
Host has to wait for the module to wakeup based on the timer that is
configured by the Host, before it can transmit any packets.
The functioning of the module in this mode depends on the connection status
as explained below
1. Before Wi-Fi connection
In this state, the module is configured with a sleep timer. Once the
timer expires, the module powers on the Core Control block and
sends the request for sleep permission to the Host again. On
getting permission the Host, the module will power off the Core
Control block for another interval of the sleep period.
If the host wants to perform any Wi-Fi related activity like scanning
or joining networks, it has to switch to Power Mode 0. After a
connection is established, it can switch back to Power Mode 1 or 2.
2. After Wi-Fi Connection
In this state, the RS9110-N-11-2X module periodically wakes up to
receive beacons from the Access Point (AP). If there is no data to
be transmitted or received to/from the Access Point, it powers off
the Baseband and RF components and requests the Host
permission to turn off the Core Control block. On receiving
permission from the Host, the module goes to sleep and wakes up
before the next beacon comes.
5.2.7.3: Power mode 2
The RS9110-N-11-2X module powers off the Baseband and RF components in
this mode. The Core Control block interacting with the Host is always
functional in this mode. Hence, the module can receive commands from the
host at any time.
NOTE: The average current consumption in Power Mode 2 is higher than
Power Mode 1.
The functioning of the module in this mode depends on the connection status
as explained below
1. Before Wi-Fi connection
If this power mode is enabled before the Wi-Fi connection is
established, the module powers off the Baseband and RF
components until the Host reconfigures the module to Power Mode
0.
If the host wants to perform any Wi-Fi related activity like scanning
and joining networks, it has to switch to Power Mode 0. This can be
done at any time during the operation. The Host can switch back to
Power Modes 1 or 2 after the Wi-Fi connection is established.
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2. After Wi-Fi Connection
In this state, the RS9110-N-11-2X module gets information from
the Access Point to which it is connected for any buffered data at
every beacon. If there is no data to be transmitted or received
to/from the Access Point, it powers off the Baseband and RF
components.
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6: Ordering Information
6.1: Contact Information
For additional information, please contact Sales at Redpine Signals, Inc.
Redpine Signals, Inc.
2107 North First Street, Suite 680,
San Jose, CA 95131 USA
Phone: +1 408 748 3385
E-mail: sales@redpinesignals.com
Website: http://www.redpinesignals.com/
6.2: Device Ordering Information
The following table lists the part numbers to be used for ordering
modules or evaluation boards (EVB). Redpine can create and provide
customized firmware based on user requirements.
Device Number
Description
Packaging
Qualification
RS9110-N-11-26-0
Part with UART as
Host Interface
Tray
-40◦C to
+80◦C
RS9110-N-11-26-01-0
Part with SPI as
Host Interface
Tray
-40◦C to
+80◦C
RS9110-N-11-26-02-0
Part with UART as
Host Interface and
external antenna
connector
Tray
-40◦C to
+80◦C
RS9110-N-11-26-03-0
Part with SPI as
Host Interface and
external antenna
connector
Tray
-40◦C to
+80◦C
RS9110-N-11-26-EVB
Evaluation board
with UART as Host
Interface
Board
RS9110-N-11-26-01-EVB
Evaluation board
with SPI as Host
Interface
Board
RS9110-N-11-26-02-EVB
Evaluation board
with UART as Host
Interface and
external antenna
connector
Board
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RS9110-N-11-26-03-EVB
Evaluation board
with SPI as Host
Interface and
external antenna
connector
Board
Table 7: Device Ordering Information
6.3: Collateral
The following documentation and software are available along with the
RS9110-N-11-26 module.
Evaluation Board (EVB) for Serial interface
Embedded firmware for WLAN and TCP/IP stack
Driver software for SPI and for AT Command Interface for UART
EVB User Guide
Reference schematics and layout guidelines
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Command Reference (AT commands and SPI
commands)
AT Command Set (for UART interface) and SPI command set (for SPI interface)
supports the following in RS9110-N-11-XX module. This is an indicative list and not a
full list. Full list of commandsis available in the Programming Reference Manual.
i. Configure the band to 2.4GHz
ii. Initialize MAC and Baseband
iii. Scan for avialable networks
iv. Join an available network in infrastructure or ad-hoc modes
v. Configure IP addresses
vi. Open and close TCP and UDP sockets
vii. Send and receive data
viii. Soft reset
ix. Baud rate configuration
x. Query by host for network parameters like RSSI, IP addresses,
security type etc.
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