Xircom EAG2919 Benutzerhandbuch
Eagle II GSM Radio Module Technical Manual Preliminary Draft: 08/31/00
16
Part Number: 07100017 version 00.04
© 2000 Xircom, Inc. All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc.
All trademarks and copyrights are the property of Xircom, Inc.
Pin
Number
Signal
Name
Direction
Functionality
Voltage
Level
16
TX0
From CPE
Transmit data 0. DCE Input signal. Active low. Main serial
interface receive data signal. During idle or reset, signal
will be a logic 1. Connects to a DTE, TX, transmit data
pin.
5 V or 3 V
18
CTS0
To CPE
Clear-To-Send 0. DCE Output signal. Active low. Main
serial interface clear to send signal. Connects to a DTE,
CTS, Clear to send pin.
3 V
20
RTS0
From CPE
Request-To-Send 0. DCE Input signal. Active low. Main
serial interface request to send signal. Connects to a
DTE, RTS, Request-To-Send pin.
5 V or 3 V
22
DTR0
From CPE
Data Terminal Ready 0. DCE Input signal. Active low.
Main serial interface data terminal ready signal. Connects
to a DTE, DTR, Data Terminal Ready pin.
5 V or 3 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
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
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
Microphone
47
MIC1P
From CPE
Microphone 1 Positive. Positive input pin from an electret-
type microphone. Nominal microphone differential voltage
should be 2.0 volts. Impedance not less than 900 ohms.
Leave signal disconnected if function is not used.
51
MIC1N
From CPE
Microphone 1 Negative. Negative input pin from an
electret-type microphone. Nominal microphone differential
voltage should be 2.0 volts. Impedance not less than 900
ohms. Leave signal disconnected if function is not used.
Speaker
55
SPK1P
To CPE
Speaker 1 Positive. Positive output pin. High side of a
push-pull amplifier. Speaker impedance 15 ohms,
minimum. Speaker capacitance of 700 pF, maximum.
Driver voltage is 4.5 V peak-to-peak. Leave signal
disconnected if function is not used.
59
SPK1N
To CPE
Speaker 1 Negative. Negative output pin. Low side of a
push-pull amplifier. Speaker impedance 15 ohms,
minimum. Speaker capacitance of 700 pF, maximum.
Driver voltage is 4.5 V peak-to-peak. Leave signal
disconnected if function is not used.