Redpine Signals, Inc. 2
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Overview
Overview
The RS9110-N-11-22 module is a
complete IEEE 802.11bgn 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, RF transceiver with
power amplifier, a frequency reference,
and an antenna in hardware; and all
WLAN protocol and configuration
functionality, networking stack in
embedded firmware to make a fully self-
contained 802.11n WLAN solution for a
variety of applications.
Applications:
Seamless Wi-Fi connectivity for
Application Processors
Industrial M2M communications
Point of Sale Terminals
Metering (Parking Meters, Utility
Meters, Power Meters, etc.)
Security Cameras and Surveillance
Equipment
Logistics and Freight Management
Warehousing
Digital Picture Frames
Several medical applications
including Patient Monitoring, Remote
Diagnostics
Device Features:
Compliant to 802.11b/g and single
stream 802.11n
Fully self-contained serial-to-
wireless functionality
Supports WPA/WPA2-PSK, WEP (64
and 128 bit) security in
infrastructure mode
Supports WEP (64 and 128 bit)
security in ad-hoc mode
Payload data through Serial
Interface and SPI
Terminates TCP and UDP
connections
Configuration through UART/SPI
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 3.6V
operation
Device Dimensions 22mm x 28mm x
2.8mm
RS9110-N-11-22 System Block Diagram
RS9110-N-11-22
RS9110 WLAN Subsystem
RS9110 RF
Transceiver
Flash
XO
Serial I/f
3.3V
Supply
RF
FE
SPI Host I/f
Reset LED
Reset
Host Processor
UART Port
Applications
TCP/UDP,
WLAN Stack
SPI/UART
Selection
Flash
Interrupt
Reset_n
Redpine Signals, Inc. 3
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Table of Contents
1 Detailed Feature List ............................................................ 7
1.1 Host Interfaces ................................................................... 7
1.2 WLAN ................................................................................. 7
1.3 Networking Protocols ......................................................... 7
1.4 Configuration ...................................................................... 8
1.5 Software............................................................................. 8
1.6 Compliance and Certification ............................................... 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 ..................................................................13
4 Electrical Characteristics ................................................... 17
4.1 Absolute Maximum Ratings ................................................17
4.2 Recommended Operating Conditions ..................................17
4.3 DC Characteristics – Digital I/O Signals .............................17
4.4 AC Characteristics – Digital I/O Signals..............................18
4.4.1 SPI Interface................................................................................. 18
4.4.2 Reset Sequence and Timing ............................................................ 19
5 Performance Specifications ............................................... 21
5.1 Wireless Specifications ......................................................21
5.2 Receive Sensitivity .............................................................21
5.3 Throughput........................................................................21
5.4 Standards Compliance .......................................................22
6 Software Architecture Overview ........................................ 23
6.1 Host ..................................................................................24
6.1.1 UART ........................................................................................... 24
6.1.2 SPI .............................................................................................. 24
6.1.3 Thin SPI Driver .............................................................................. 24
6.2 RS9110-N-11-22 ................................................................24
6.2.1 SPI .............................................................................................. 24
6.2.2 UART ........................................................................................... 25
6.2.3 Host Abstraction Layer (HAL) .......................................................... 25
6.2.4 Wireless Control Block (WCB) .......................................................... 25
6.2.5 Wi-Fi Control Frames ..................................................................... 25
6.2.6 TCP/IP Control Frames ................................................................... 25
6.2.7 Station Management Entity (SME) ................................................... 25
6.2.8 WPA Supplicant ............................................................................. 25
6.3 Power Save Modes .............................................................25
Redpine Signals, Inc. 4
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
6.3.1 Power Mode 0 ............................................................................... 26
6.3.2 Power Mode 1 ............................................................................... 26
6.3.3 Power Mode 2 ............................................................................... 26
7 Ordering Information ........................................................ 28
Contact Information .................................................................................. 28
Device Ordering Information ...................................................................... 28
Collateral ................................................................................................. 29
8 Command Reference (AT commands and SPI commands) . 30
Redpine Signals, Inc. 5
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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 ..................... 18
Figure 8:Interface Timings – SPI Interface High-speed Mode .................... 19
Figure 9:Reset Pin Timing Diagram ............................................................ 20
Figure 10:RS9110-N-11-22 Software Architecture Block Diagram ............. 23
Redpine Signals, Inc. 6
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
List of Tables
Table 1: Pin Description ............................................................................. 16
Table 2: Absolute Maximum Ratings........................................................... 17
Table 3: Recommended Operating Conditions ............................................ 17
Table 4: Input/Output DC Characteristics .................................................. 17
Table 5: AC Characteristics – SPI Interface Low-speed Mode ..................... 18
Table 6: AC Characteristics – SPI Interface High-speed Mode .................... 19
Table 7: Wireless Specifications ................................................................. 21
Table 8: Receive Characteristics – Sensitivity ............................................ 21
Table 9: Device Ordering Information ........................................................ 29
Redpine Signals, Inc. 7
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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 variable baud rates from 9600 to
3686400 bps
o AT Command Interface for configuration and module operation
SPI
o Standard 4-wire SPI
o Operation up to a maximum clock speed of 75MHz1
1.2 WLAN
MAC
Conforms to IEEE 802.11b/g/n standards
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
Security - WPA/WPA2-PSK, WEP
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
RF
Highly integrated 2.4 GHz transceiver and Power Amplifier with direct
conversion architecture
Integrated frequency reference and antenna
1.3 Networking Protocols
TCP
UDP
1 This frequency depends on the external delays also.
Redpine Signals, Inc. 8
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
ARP
ICMP
DHCP Client
The RS9110-N-11-22 comes with flexible frameworks to enable usage in
various application scenarios, viz., high throughput, more network features,
etc.
1.4 Configuration
The RS9110-N-11-22 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 (ad-hoc) network
Open/Close sockets for TCP, UDP
1.5 Software
Sample Host driver for SPI interface
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, ICMP,
DHCP client.
1.6 Compliance and Certification
Reference design is FCC, IC, and CE certified
RoHS (Restriction of Hazardous Substances) compliant
Redpine Signals, Inc. 9
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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
Redpine Signals, Inc.
10
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
2.3 Package Dimensions
Figure 3: Package Dimensions
Module height = 2.8 mm
Redpine Signals, Inc.
11
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
2.4 PCB Landing Pattern
Figure 4:PCB Landing Pattern
Redpine Signals, Inc.
12
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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-11-22 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.
13
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
3 Pin Description
3.1 Module Pinout
RS9110-N-11-22 Module
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
NC
NC
NC
NC
MODE_SEL_1
GND
GND
NC
NC
NC
GND
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
NC
NC
UART_RX
SD3
UART_TX
RESET_n
INTR
SPI_MISO
SPI_MOSI
NC
NC
NC
UART_RX
UART_TX
RESET_n
INTR
SPI_MISO
SPI_MOSI
NC
NC
NC
NC
JPD0
JPD1
JNC
VIN33
JPD2
VIN33
GND
NC
NC
SPI_CLK
SPI_CS
VIN33
NC
NC
SPI_CLK
SPI_CS
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Figure 6:Pinout of the Module
3.2 Pin Description
Pin No.
Pin Name
Directi
on
Type
Description
1
SPI_MOSI
Input
LVCMOS
8mA
SPI Data Input.
In UART mode, connect pull-down (1K to
10K Ohms)
2
SPI_MISO
Output
LVCMOS
8mA
SPI Data output. No connect in UART mode
Redpine Signals, Inc.
14
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Pin No.
Pin Name
Directi
on
Type
Description
3
INTR
Output
LVCMOS
8mA
Interrupt to the host. Active high, level
triggered. Asserted by the module when:
1.The module has to transmit data to the
host through SPI.
2.When the module wakes up from sleep
mode
4
RESET_n
Input
LVCMOS
Power on reset. Active low, required to be
active for at least 10 ms after power on, to
reset the module.
5
UART_TX
Output
LVCMOS
4mA
UART output. No connect in SPI mode.
6
SD3
-
No connect in SPI mode. In UART mode,
connect pull-down (1K to 10K Ohms)
7
UART_RX
Input
LVCMOS
4mA
UART input. No connect in SPI mode.
8
NC
-
No connect
9
NC
-
No connect
10
GND
Ground
Ground. Connect all the GND pins directly to
a ground plane or copper ground fill
11
NC
-
No Connect
12
NC
-
No connect
13
NC
-
No connect
14
NC
-
No connect
15
NC
-
No connect
16
GND
Ground
Ground. Connect all the GND pins directly to
a ground plane or copper ground fill
17
NC
-
No connect
18
NC
-
No connect
19
NC
-
No connect
20
GND
Ground
Ground. Connect all the GND pins directly to
a ground plane or copper ground fill.
21
GND
Ground
Ground. Connect all the GND pins directly to
a ground plane or copper ground fill
22
MODE_SEL_1
Input
LVCMOS
2mA
SPI Mode: Connect pull down ( 3.9K Ohms
to 4.7K Ohms)
Redpine Signals, Inc.
15
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Pin No.
Pin Name
Directi
on
Type
Description
UART Mode: No connect
23
NC
-
No connect
24
NC
-
No connect
25
NC
-
No Connect
26
NC
-
No Connect
27
NC
-
No Connect
28
NC
-
No Connect
29
NC
-
No Connect
30
NC
-
No Connect
31
NC
-
No Connect
32
NC
-
No Connect
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
JPD
-
Connect pull down of 1 K Ohms
43
JPD
-
Connect pull down of 1 K Ohms
44
JPD
-
Connect pull down of 1 K Ohms
45
JNC
-
No connect
46
VIN33
Power
3.3V Power supply, Recommend connecting these
pins to a copper fill with bypassed capacitors as
indicated in reference schematics.
Redpine Signals, Inc.
16
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Pin No.
Pin Name
Directi
on
Type
Description
10mV pk-pk maximum noise allowed.
47
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.
48
GND
Ground
Ground. Connect all the GND pins directly to
a ground plane or copper ground fill
49
NC
-
No connect
50
NC
-
No connect
51
SPI_CLK
Input
LVCMOS
SPI Clock input. In UART mode, should be
pulled down with resistor (1K to 10K Ohms)
52
SPI_CS
Input
LVCMOS
8mA
Active low SPI Chip Select. In UART mode,
should be pulled down with resistor (1K to
10K Ohms)
Table 1: Pin Description
Notes:
Some interfaces are not used in the default configuration or mode of
operation. These may be used in custom applications with appropriate
firmware.
Please contact Redpine Signals for application notes or for customization
of a solution.
Redpine Signals, Inc.
17
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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 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
Electrostatic discharge tolerance (HBM)
ESDHBM
2000
V
Electrostatic discharge tolerance (MM)
ESDMM
200
V
Electrostatic discharge tolerance (CDM)
ESDCDM
500
V
Table 2: 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
Ambient temperature
Ta
-40
25
85
C
Table 3: Recommended Operating Conditions
4.3 DC Characteristics – Digital I/O Signals
Parameter
Min.
Typ.
Max.
Units
Input high voltage
2
-
3.6
V
Input low voltage
-0.3
-
0.8
V
Output low voltage
-
-
0.4
V
Output high voltage
3.0
-
-
V
Input leakage current (at 3.3V or 0V)
-
-
10
A
Tristate output leakage current (at 3.3V
or 0V)
-
-
10
A
Table 4: Input/Output DC Characteristics
Redpine Signals, Inc.
18
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
4.4 AC Characteristics – Digital I/O Signals
4.4.1 SPI Interface
Low Speed Mode
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
-
ns
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 5: AC Characteristics – SPI Interface Low-speed Mode
SPI_CLK
SPI_CS
SPI_MOSI
SPI_MISO
Tcst
Tod
Tsd
Thd
Tcs
SPI_CS
SPI_MISO
Figure 7:Interface Timings – SPI Interface Low-speed Mode
High Speed Mode
Parameter
Symbol
Min.
Typ.
Max.
Units
SPI_CLK Frequency
Fspi
0
-
75
MHz
SPI_CS to output valid
Tcs
3.5
-
7.5
ns
SPI CS setup time
Tcst
2
-
ns
SPI_MOSI setup time
Tsd
1
-
ns
SPI_MOSI hold time
Thd
1.5
-
Ns
Redpine Signals, Inc.
19
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Parameter
Symbol
Min.
Typ.
Max.
Units
SPI_MISO clock to output
valid
Tod
4
-
9.5
ns
Table 6: AC Characteristics – SPI Interface High-speed Mode
SPI_CLK
SPI_CS
SPI_MOSI
SPI_MISO
Tsd
Tod
Thd
Tcst
Tcs
SPI_CS
SPI_MISO
Figure 8:Interface Timings – SPI Interface High-speed Mode
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
Redpine Signals, Inc.
20
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Figure 9:Reset Pin Timing Diagram
3.3V input
supply
20msec
A
1msec
B
Reset_n
Redpine Signals, Inc.
21
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
5 Performance Specifications
5.1 Wireless Specifications
Feature
Description
Frequency Band
2.400 – 2.500 GHz (2.4 GHz ISM 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)
17 dBm for 802.11b DSSS
17 dBm for 802.11b CCK
15 dBm for 802.11g/n OFDM
Table 7: Wireless Specifications
5.2 Receive Sensitivity
Data Rate
Typical Sensitivity
(+/- 1.5 dBm)
Sweep – PER Floor
1 Mbps
-97.0 dBm
< 0.1%
2 Mbps
-93.0 dBm
< 0.1%
11 Mbps
-88.0 dBm
< 0.1%
6 Mbps
-91.0 dBm
< 0.1%
54 Mbps
-75.0 dBm
< 0.1%
65 Mbps
-71.0 dBm
< 0.1%
Table 8: Receive Characteristics – Sensitivity
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.
5.3 Throughput
Interface
(TCP) Throughput
UART (measured at
115200 bauds per sec)
Tx – 75 kbps
Redpine Signals, Inc.
22
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
Interface
(TCP) Throughput
Rx – 72 kbps
SPI
Tx – 7.5 Mbps
Rx – 6 Mbps
5.4 Standards Compliance
RS9110-N-11-22 is compliant with the requirements of IEEE 802.11b,
802.11g 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
Receiver Non-adjacent Channel Rejection
Receiver Minimum Input Level
Receiver Maximum Input Level
Redpine Signals, Inc.
23
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
6 Software Architecture Overview
The following figure depicts the software architecture of the RS9110-N-11-22
module.
SLIP
UART
HOST PROCESSOR (HOST)
RS9110-N-11-22
Host Abstraction Layer
Station Managment Entity
802.11 b/g/n MAC
TCP/IP
Wireless Control Block
SPI
WPA/WPA-2
UART Driver
Thin
SPI Driver
UARTSPI
Application
Interrupt
Figure 10:RS9110-N-11-22 Software Architecture Block Diagram
Redpine Signals, Inc.
24
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
As shown in the figure above, the RS9110-N-11-22 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-11-22 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-
22 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.
The following sections explain in brief the various components illustrated in
Figure 9.
6.1 Host
The Host is any system that has applications being executed and either a
UART or SPI interface.
6.1.1 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-11-22 module and also to send and receive data over the network by
accessing the TCP/IP stack in the RS9110-N-11-22 module.
6.1.2 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.
6.1.3 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-11-22
module and also to configure the same over the SPI interface.
6.2 RS9110-N-11-22
The RS9110-N-11-22 module incorporates Wi-Fi, TCP/IP, DHCP Client, ARP,
etc., 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-11-22 module in brief.
6.2.1 SPI
The SPI on the RS9110-N-11-22 acts the SPI slave. It is a standard 4-wire
SPI and can support a maximum frequency of 75MHz.
Redpine Signals, Inc.
25
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
6.2.2 UART
The UART on the RS9110-N-11-22 module is the physical interface which
transmits/receives the data from the Host. It supports variable baud rates
from 9600 to 3686400 bps. There is support for AT commands to configure
and operate the module through UART interface. Flow control is not
supported.
6.2.3 Host Abstraction Layer (HAL)
The HAL abstracts the lower layers in the host interface with which the
RS9110-N-11-22 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.
6.2.4 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.
6.2.5 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-
11-22 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.
6.2.6 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.
6.2.7 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.
6.2.8 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.
6.3 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.
Redpine Signals, Inc.
26
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
6.3.1 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.
6.3.2 Power Mode 1
The RS9110-N-11-2X module powers off the Baseband, RF and also the Core
Control Block. 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.
6.3.3 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
Redpine Signals, Inc.
27
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
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.
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.
Redpine Signals, Inc.
28
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
7 Ordering Information
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/
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-11-22-0
Part with UART as
Host Interface
Tray
-40 C to +85 C
RS9110-N-11-22-01-0
Part with SPI as
Host Interface
Tray
-40 C to +85 C
RS9110-N-11-22-02-0
Part with UART as
Host Interface
and external
antenna
connector
Tray
-40 C to +85 C
RS9110-N-11-22-03-0
Part with SPI as
Host Interface
and external
antenna
connector
Tray
-40 C to +85 C
RS9110-N-11-22-EVB
Evaluation board
with UART as
Host Interface
Board
RS9110-N-11-22-01-EVB
Evaluation board
with SPI as Host
Interface
Board
RS9110-N-11-22-02-EVB
Evaluation board
with UART as
Host Interface
and external
antenna
Board
Redpine Signals, Inc.
29
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
connector
RS9110-N-11-22-03-EVB
Evaluation board
with SPI as Host
Interface and
external antenna
connector
Board
Table 9: Device Ordering Information
Collateral
The following documentation and software are available along with the
RS9110-N-11-22 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
Programming Reference Manual
Redpine Signals, Inc.
30
R
RS
S9
91
11
10
0-
-N
N-
-1
11
1-
-2
22
2
–
–
W
Wi
ir
re
el
le
es
ss
s
D
De
ev
vi
ic
ce
e
S
Se
er
rv
ve
er
r
D
Da
at
ta
as
sh
he
ee
et
t.
.
1
19
9
A
Ap
pr
ri
il
l,
,
2
20
01
11
1.
.
V
Ve
er
rs
si
io
on
n
1
1.
.1
14
4
8 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 commands available in 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.
****
