A1101R09x – User’s Manual
Page 21 of 33
Release Date 05/08/12
Table 7 Pin Descriptions
Pin #
Pin Name
Pin Type
Description
1
DNC
NC
Internal GND connection used during testing, not recommended to
connect to main GND.
2
DNC
NC
Internal RF output connection used during test. Connecting this pin
to anything will require recertification for intentional radiators.
3
DNC
NC
Internal GND connection used during testing, not recommended to
connect to main GND.
4
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
5
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
6
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
7
Vdcoup1
Analog
Optional decoupling of the modules internal Vdd supply. It is
recommended to not connect anything to this pin. In particular noisy
environment this pin can be used to further reduce the noise on the
modules internal Vdd, please see section 3.5 for further information.
8
GND
Ground
One of two primary ground pins
9
SCLK
Digital Input SPI bus clock signal
10
MISO/GDO1
Digital
Output
SPI bus data out from radio when CSN is low, and general purpose
I/O pin when CSN is high
11
MOSI
Digital Input SPI bus data into radio
12
_CSN
Digital Input SPI bus select (active low)
13
GDO0
Digital I/O
(Analog
output)
General purpose port
14
GDO2
Digital I/O
General purpose port
15
Vdcoup2
Analog
Optional decoupling of the modules internal Vdd supply. It is
recommended to not connect anything to this pin. In particular noisy
environment this pin can be used to further reduce the noise on the
modules internal Vdd, please see section 3.5 for further information.
16
NC
NC
No Connect, the pin is not connected internally, but is reserved for
future expansion. It is recommended not to connect this pin to
anything.
17
GND
Ground
One of two primary ground pins
18
Vdd
Power
Supply
Power supply pin
19
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
20
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
21
NC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
22
DNC
NC
Internal GND connection used during testing, not recommended to
connect to main GND.
23
DNC
NC
Pin is not connected internally, but is reserved for future expansion.
It is recommended not to connect this pin to anything.
24
DNC
NC
Internal GND connection used during testing, not recommended to
connect to main GND.
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