9
TOWER SYSTEM
Jumper
Option
Setting
Description
J2
Audio codec
power
ON
Supply 3.3V power to audio codec
OFF
Remove power from audio codec. Audio codec cannot be used
when operating the board at 1.8V. So J2 should be OFF for 1.8V
board operation.
J13
TWRPI current
measurement
ON
Connect V_BRD to TWRPI 3-V power (GPT_VBRD)
OFF
Disconnect V_BRD from TWRPI 3-V power (GPT_VBRD) to measure
TWRPI current
J5
Accelerometer/
magnetometer*
I
2
C SCL
connection
ON
Connect PTE24 to I
2
C_SCL_SNSR
OFF
Disconnect PTE24 from I
2
C_SCL_SNSR
J6
Accelerometer/
magnetometer
I
2
C SDA
connection
ON
Connect PTE25 to I
2
C_SDA_SNSR
OFF
Disconnect PTE25 from I
2
C_SDA_SNSR
J9
Accelerometer/
magnetometer
I
2
C slave
address SA0
ON
Pull accelerometer/magnetometer SA0 low
OFF
Pull accelerometer/magnetometer SA0 high
J8
Magnetometer
slave address
SA1
ON
Pull magnetometer SA1 high
OFF
Pull magnetometer SA1 low (also used for accelerometer GND)
J12
Accelerometer/
Magnetometer
I
2
C interrupt 1
ON
Connect PTB0 to INT1
OFF
Disconnect PTB0 from INT1
J10
Accelerometer/
Magnetometer
I
2
C interrupt 2
ON
Connect PTB1 to INT2
OFF
Disconnect PTB1 from INT2
TWR-K24F120M Jumper Options
(continued)
