EM34X-VREVK Datasheet, PDF (213/237 Pages) Silicon Laboratories – High-Performance, Integrated RF4CE System-on-Chip

EM341
Table 17.1. EM341 Pin Descriptions (Continued)
Pin #
22
Signal
PA1
Direction
I/O Digital I/O
Description
TIM2C3
O
Timer 2 channel 3 output
(see also Pin 19)
Disable remap with TIM2_OR[6]
Enable timer output in TIM2_CCER
Select alternate output function with GPIO_PACFGL[7:4]
TIM2C3
I
Timer 2 channel 3 input
(see also Pin 19)
Disable remap with TIM2_OR[6]
SC2SDA
I/O TWI data of Serial Controller 2
Either disable timer output in TIM2_CCER, 
or enable remap with TIM2_OR[6]
Select TWI with SC2_MODE
Select alternate open-drain output function with GPIO_PACFGL[7:4]
SC2MISO
O
SPI slave data out of Serial Controller 2
Either disable timer output in TIM2_CCER, 
or enable remap with TIM2_OR[6]
Enable slave with SC2_SPICFG[4]
Select SPI with SC2_MODE
Select alternate output function with GPIO_PACFGL[7:4]
SC2MISO
I
SPI master data in of Serial Controller 2
Enable slave with SC2_SPICFG[4]
Select SPI with SC2_MODE
23
VDD_PADS
Power Pads supply (2.1–3.6 V)
Rev 1.0