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MC909X Mobile Computer User Guide

Mobile Computer Pin-Outs

Figure A-1

Pin Locations

Table A-4

Pin-Outs

PIN Number

Signal Name

Function

1

USB_GND

USB

2

USB_D_PLUS

USB

3

TXD

RS232C

4

RXD

RS232C

5

DCD

RS232C

6

RTS

RS232C

7

DSR

RS232C

8

GND

Ground, 2.5A max.

9

RI

RS232C

10

CRADLE_DET

Grounded by cradle when in cradle

11

DTR

RS232C

12

Not connected

Not connected

13

POWER_IN

12V, 2.5A max

14

CTS

RS232C

15

USB_5V_DET

USB

16

USB_D_MINUS

USB

17

EXT_PWR_OUT

3.3V @500mA

1

8

17

9