TWR
‐
WIFI
‐
RS2101
User’s
Manual
Page
5
of
9
RS9110-N-11-21-01
RS9110 WLAN Subsystem
RS9110
RF
Transceiver
Flash
XO
3.3V
Supply
RF
FE
Reset
LED
Reset
BT Coexistence I/f
Test Port
Freescale MCU
Applications
MQX OS/TCP IP
SLIP
SLIP
WLAN St ack
SPI/UART
Selection
GPIO
SPI
Figure
2.
RS9110
‐
N
‐
11
‐
21
Module:
Functional
Block
Diagram
3.2
System
Power
The
RS9110
‐
N
‐
11
‐
21
is
powered
from
a
source
in
an
assembled
Tower
System
via
the
3.3V
supply
on
the
Primary
Elevator
Connector.
3.3
Access
Header
The
SPI
and
interrupt
signals
are
routed
to
both
the
Primary
Elevator
connector
and
a
2x5
pin
header.
This
Access
Header
can
be
used
to
access
the
RS9110
‐
N
‐
11
‐
21
module
signals
for
probing
or
for
use
outside
of
the
Tower
System.
The
pinout
is
shown
in
Table
1.
Table
1.
Access
Header
Connections
RS9110
‐
N
‐
11
‐
21
Signal
Pin
RS9110
‐
N
‐
11
‐
21
Signal
3.3V
1
2
GND
SPI_CLK
3
4
SPI_INTR
No
Connect
5
6
No
Connect
SPI_DATAOUT
7
8
SPI_CS
SPI_DATAIN
9
10
GND
3.4
Elevator
Connections
The
TWR
‐
WIFI
‐
RS2101
features
two
expansion
card
‐
edge
connectors
that
interface
to
Elevator
boards
in
a
Tower
system:
the
Primary
and
Secondary
Elevator
connectors.
The
Primary
Elevator
connector,
comprised
of
sides
A
and
B,
is
utilized
by
the
TWR
‐
WIFI
‐
RS2101,
while
the
Secondary
Elevator
connector
only
makes
connections
to
ground
(GND).
Table
2
provides
the
pinout
for
the
Primary
