Anaren A2530E24A, User Manual

Page: 29 / 46

AIR BoosterPack
– User’s Manual
Page 29 of 45
Release Date 11/2/12

Radio Module Pin Mapping
The AIR BoosterPack board provides the ability to remap several of the radio
module’s
I/O pins to different MCU pins. JP102, JP105, and JP108 consist of one or more 0603
SMT pads which allow a zero Ohm resistor to be soldered in place to select the desired
jumper position. The default signal routing is determined by a small trace between one
set of pads. To change jumper positions, this trace needs to be cut and a zero Ohm
resistor soldered in the new position.
JP102, in conjunction with R100, selects whether the radio module’s reset signal is
generated by MCU pin P2.5 or P2.7. This allows applications requiring a crystal on the
MCU to use a different pin for radio module reset, at the expense of giving up the use of
the Green segment of the Tri-Color LED.
SRDY is a required signal when using a secondary MCU with the A2530 radio module,
there JP105 should not be modified.
JP108 can be used to select whether MRDY is tied to MODULE_SS or uses its own
MCU pin. Some applications may require MRDY to be isolated from MODULE_SS. In
these cases, MRDY can be configured to use MCU pin P1.4 instead of P2.0, at the
expense of giving up the use of the Current Sensor.
Table 10 – JP102 Jumper Settings
Jumper Position
Radio
Signal
Name
MCU Signal
Name
Description
JP102
Closed
MRST
P2.7
/MRST
MRST connected to MCU pin P2.7 (default)
Open MRST disconnected from MCU pin P2.7
Table 11 – JP105 Jumper Settings
Jumper Position
Radio
Signal
Name
MCU Signal
Name
Description
JP105
Closed
SRDY
P2.2/
SRDY
SRDY connected to MCU pin P2.2 (default)
Open SRDY disconnected from MCU pin P2.2
Table 12 – JP108 Jumper Settings
Jumper Position
Radio
Signal
Name
MCU Signal
Name
Description
JP108
1
MRDY
P2.0/
MODULE_SS
MRDY connected to MCU pin P2.0 (default)
2
P1.4/
CUR/
MRDY/
EXT_CSN
MRDY connected to MCU pin P1.4