User's Manual

Eagle II GSM Radio Module Technical Manual Preliminary Draft: 08/31/00 46

Part Number: 07100017 version 00.04

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PIN ASSIGNMENTS OF THE I/O

CONNECTOR

Signals of the I/O Connector, Sorted by Pin Number

Pin Signal

Name

Direction Functionality Voltage

Level

VIN From CPE Electrical power input to Eagle II module:

4.2 VDC to 5.2 VDC

Refer to the table for Operating Power.

7 TX on To CPE Transmit ON. Digital output to indicate transmitter power status. A

logic 1 indicates transmit power is on. A logic 0 indicates transmit

power is off. Leave signal disconnected if function is not used.

2.2 V

8 RX0 To CPE Receive data 0. DCE Output signal. Main serial interface transmit

data signal. During idle or reset, signal will be a logic 1. Connects to

a DTE, RX, receive data pin.

3 V

9 RX on To CPE Receive ON. Digital output to indicate receiver power status. A logic

1 indicates receiver power is off. A logic 0 indicates receive power is

off. Leave signal disconnected if function is not used.

2.2 V

10 DSR0 To CPE Data Set Ready 0. DCE Output signal. Active low. Main serial

interface data set ready signal. Connects to a DTE, DSR, Data Set

Ready pin.

3 V

11 Reserved Do not use. Leave open

12 DCD0 To CPE Data Carrier Detect 0. DCE Output signal. Active low. Main serial

interface data carrier detect signal. Connects to a DTE, CD, Carrier

Detect pin.

3 V

13 GPIO0 To/From CPE General purpose I/O bit. Used as general purpose input or output

lines for monitoring or control of external devices. Requires

customized stack software to implement. Leave signals disconnected

if function is not used.

3 V

14 RI0 To CPE Ring Indicator 0. DCE Output signal. Active low. Main serial interface

ring indicator signal. Connects to a DTE, RI, Ring Indicator pin.

3 V

15 GPIO1 To/From CPE General purpose I/O bit. Used as general purpose input or output

lines for monitoring or control of external devices. Requires

customized stack software to implement. Leave signals disconnected

if function is not used.

3 V