Anaren A2530E24A, User Manual

Page: 30 / 46

Page 30 of 45 AIR BoosterPack
– User’s Manual
Release Date 11/2/12

I
2
C Pin Mapping
The example application preloaded in the MSP430 uses a software I
2
C controller on port
pins P2.3 and P2.4. For Stellaris applications utilizing a hardware I
2
C controller, JP106
and JP107 may be used to free up these two pins for other purposes. Both of these are
2-terminal jumpers that can accommodate a 0603 resistor. The BoosterPack is shipped
with a PCB trace making the connection by default. To break the connection, this trace
must be cut.
Table 13 - JP106 Jumper Settings (SDA)
Jumper Position
LaunchPad
Signal
Name
MSP430
Signal
Name
Description
JP106
Closed P2.3/
SDA
SDA
MSP430 P2.3 connected to J2-1 (default)
Open MSP430 P2.3 disconnected from J2-1
Table 14 - JP107 Jumper Settings (SCL)
Jumper Position
LaunchPad
Signal
Name
MSP430
Signal
Name
Description
JP107
Closed
P2.4/
SCL/
LED3
SCL
MSP430 P2.4 connected to J2-2 (default)
Open MSP430 P2.4 disconnected from J2-2

Miscellaneous
JP103 and JP104 are small solder jumpers intended for test purposes only. Do not
bridge the gap at these locations as the I
2
C signals (SCL, SDA) would be shorted
directly to GND, preventing normal operation of the I
2
C bus.
Table 15 – JP103 Jumper Settings
Jumper Position
Radio
Signal
Name
MCU
Signal
Name
Description
JP103
Closed
TP23 SDA
Reserved
Open Reserved (default)
Table 16 – JP104 Jumper Settings
Jumper Position
Radio
Signal
Name
MCU
Signal
Name
Description
JP104
Closed
TP21 SCL
Reserved
Open Reserved (default)