
Rev 1.0
9
EM358x
Table 6.1. EM358x Pin Descriptions (Continued)
Pin #
Signal
Direction
Description
20
PB4
I/O Digital
I/O
TIM2C4
(see also Pin 24)
O Timer
2
channel
4
output
Enable remap with TIM2_OR[7]
Enable timer output in TIM2_CCER
Select alternate output function with GPIO_PBCFGH[3:0]
TIM2C4
(see also Pin 24)
I Timer
2
channel
4
input
Enable remap with TIM2_OR[7]
SC1nRTS
O
UART RTS handshake of Serial Controller 1
Either disable timer output in TIM2_CCER,
or disable remap with TIM2_OR[7]
Enable with SC1_UARTCFG[5]
Select UART with SC1_MODE
Select alternate output function with GPIO_PBCFGH[3:0]
SC1nSSEL
I
SPI slave select of Serial Controller 1
Enable slave with SC1_SPICFG[4]
Select SPI with SC1_MODE
21
PA0
I/O Digital
I/O
USBDM (where
applicable)
I/O
USB D- signal
Select analog function with GPIO_PACFGL[3:0]
TIM2C1
(see also Pin 30)
O Timer
2
channel
1
output
Disable remap with TIM2_OR[4]
Enable timer output in TIM2_CCER
Select alternate output function with GPIO_PACFGL[3:0]
TIM2C1
(see also Pin 30)
I Timer
2
channel
1
input
Disable remap with TIM2_OR[4]
SC2MOSI
O
SPI master data out of Serial Controller 2
Either disable timer output in TIM2_CCER,
or enable remap with TIM2_OR[4]
Enable master with SC2_SPICFG[4]
Select SPI with SC2_MODE
Select alternate output function with GPIO_PACFGL[3:0]
SC2MOSI
I
SPI slave data in of Serial Controller 2
Enable slave with SC2_SPICFG[4]
Select SPI with SC2_MODE
Note:
1.
IRQC and IRQD external interrupts can be mapped to any digital I/O pin using the GPIO_IRQCSEL and
GPIO_IRQDSEL registers.