EM342-RTR datasheet(123/143 Pages) SILABS

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EM342

Rev 1.0

123

PB3

I/O

Digital I/O

SC1nCTS

UART CTS handshake of Serial Controller 1

Enable with SC1_UARTCFG[5]

Select UART with SC1_MODE

SC1SCLK

SPI slave clock of Serial Controller 1

Enable slave with SC1_SPICFG[4]

Select SPI with SC1_MODE

PB4

I/O

Digital I/O

SC1nRTS

UART RTS handshake of Serial Controller 1

Enable with SC1_UARTCFG[5]

Select UART with SC1_MODE

Select alternate output function with GPIO_PBCFGH[3:0]

SC1nSSEL

SPI slave select of Serial Controller 1

Enable slave with SC1_SPICFG[4]

Select SPI with SC1_MODE

Do not connect

VDD_PADS

Power

Pads supply (2.1–3.6 V)

Do not connect

PA4

I/O

Digital I/O

PTI_EN

Frame signal of Packet Trace Interface (PTI)

Disable trace interface in ARM core

Enable PTI in Ember software

Select alternate output function with GPIO_PACFGH[3:0]

TRACEDATA2

Synchronous CPU trace data bit 2

Select 4-wire synchronous trace interface in ARM core

Enable trace interface in ARM core

Select alternate output function with GPIO_PACFGH[3:0]

Table 17.1. EM342 Pin Descriptions (Continued)

Pin #

Signal

Direction

Description

EM342-RTR Datasheet(PDF) 123 Page - Silicon Laboratories

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