EM3591-RTR datasheet(45/59 Pages) SILABS

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EM359x

Rev 1.0

PA4

I/O

Digital I/O

ADC4

Analog

ADC Input 4

Select analog function with GPIO_PACFGH[3:0]

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

(see also Pin 43)

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]

PA5

I/O

Digital I/O

ADC5

Analog

ADC Input 5

Select analog function with GPIO_PACFGH[7:4]

PTI_DATA

Data signal of Packet Trace Interface (PTI)

Disable trace interface in ARM core

Enable PTI in Ember software

Select alternate output function with GPIO_PACFGH[7:4]

nBOOTMODE

Activate FIB monitor instead of main program or bootloader when coming

out of reset.

Signal is active during and immediately after a reset on nRESET. Refer to

section 7.5, Boot Configuration, in Chapter 7, GPIO, of the Ember EM359x

Reference Manual

for details.

TRACEDATA3

(see also Pin 44)

Synchronous CPU trace data bit 3

Select 4-wire synchronous trace interface in ARM core

Enable trace interface in ARM core

Select alternate output function with GPIO_PACFGH[7:4]

PD4

I/O

Digital I/O

SC3nRTS

UART RTS handshake of Serial Controller 3

Enable with SC3_UARTCFG[5]

Select UART with SC3_MODE

Select alternate output function with GPIO_PDCFGH[3:0]

SC3nSSEL

SPI slave select of Serial Controller 3

Enable slave with SC3_SPICFG[4]

Select SPI with SC3_MODE

Table 6.1. EM359x Pin Descriptions (Continued)

Pin #

Signal

Direction

Description

Note:

IRQC and IRQD external interrupts can be mapped to any digital I/O pin using the GPIO_IRQCSEL and

GPIO_IRQDSEL registers.

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