Anaren A2530E24A, User Manual

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Page 28 of 45 AIR BoosterPack
– User’s Manual
Release Date 11/2/12
3.2.7. Jumpers

Current Sensor
The onboard Current Sensor can be configured to measure the current drawn by the
A2530 radio module only or by the entire board. The current consumption of the radio
module is always measured and the installed shunt determines which side of the current
sense resistor the remainder of the board gets its power from. Therefore there must
always be a shunt installed on JP1, otherwise only the radio module will be powered.
For applications that do not require current sensing and wish to utilize the MCU pin for
another function, the Current Se
nsor’s analog output can be disconnected from the rest
of the board by removing the shunt from JP2.
Table 6 - JP1 Jumper Settings (Current Sensor Select)
Jumper Position Description
JP1
1 Current Sensor measures radio module only (default)
2 Current Sensor measures entire board
Table 7 - JP2 Jumper Settings (Current Sensor Enable)
Jumper Position Description
JP2
Closed Current Sensor analog output connected to MCU (default)
Open Current Sensor analog output disconnected from MCU

Radio Module Configuration
JP100 and JP101 control the operating mode of the A2530 radio module. Currently
JP100 is reserved for future use while JP101 selects whether the electrical interface to
the module is SPI or UART. Both of these are 3-terminal jumpers that can
accommodate a 0603 resistor populated in one of two positions. The BoosterPack is
shipped with a PCB trace making the default connection. To change to a different
setting, this trace must be cut prior to soldering a resistor in the new position.
Table 8 - JP100 Jumper Settings (CFG0)
Jumper Position Radio Signal Name Description
JP100
1
CFG0
Reserved (default)
2 Reserved
Table 9 - JP101 Jumper Settings (CFG1)
Jumper Position Radio Signal Name Description
JP101
1
CFG1
Radio uses SPI interface (default)
2 Radio uses UART interface