Sierra Wireless AirLink FXT Series Spezifikationen PDF herunterladen (Seite 20)

WA_DEV_FEX20_PTS_004 Rev 001 June 30, 2010 20

Expansion Card Product Technical

Specification

Interfaces

Pin Number

Signal Name

Voltage

I/O*

Reset State

Description

Dealing with Unused Pins

SPI2-CS

GPIO35

2V8

SPI2 Chip Select

SPI2-I

GPIO34

2V8

SPI2 Data Input

RXD2

GPIO15

1V8

Auxiliary RS232 Receive

Add a test point for debugging

TXD2

GPIO14

1V8

Auxiliary RS232 Transmit

(TXD2) Pull-up to VCC_1V8 with

100kΩ and add a test point for

debugging

CTS2

GPIO16

1V8

Auxiliary RS232 Clear To

Send

(CTS2) Add a test point for debugging

RTS2

GPIO17

1V8

Auxiliary RS232 Request To

Send

(RTS2) Pull-up to VCC_1V8 with

100kΩ and add a test point for

debugging

GPIO8

1V8

I/O

Pull-up

GPIO26

SCL

Open

Drain

I²C Clock

GPIO19

2V8

I/O

GPIO27

SDA

Open

Drain

I/O

I²C Data

GPIO20

2V8

I/O

Undefined

INT0

GPIO3

1V8

Interruption 0 Input

If INT0 is not used, it should be

configured as GPIO

GPIO23

2V8

I/O

GPIO22

2V8

I/O

DTR1-CT108/2

GPIO41

2V8

Main RS232 Data Terminal

Ready

(DTR1) Pull-up to VCC_2V8 with

100kΩ

PCM-SYNC

1V8

Pull-down

PCM Frame Synchro

PCM-IN

1V8

Pull-up

PCM Data Input

PCM-CLK

1V8

Pull-down

PCM Clock

PCM-OUT

1V8

Pull-up

PCM Data Output

AUX-DAC

Analog

Digital to Analog Output

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 59 60

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