User Guide

After Sales
Technical Documentation
Handsfree Desktop Charger CHH–7
Original, 11/94 Page 11
Internal Signals and Connections
Table 15. List of Internal Connectors
CONNECTOR MODULE NOTES DESCRIPTION
Internal System
Connector
DC3H/
DC4H
DC3H: X500 <–> DC4H: X700 10 connections, flex foil
Spare Battery
Connector
DC3H X101...X104 <––> Battery Conn. Contact Springs
Speaker Connector DC3H X460 <––> Hf–speaker 2 connections, wires
Microphone
Connector
DC3H X440 <––> Hf–microphone 2 connections, wires
Table 16. Internal System Connectors X500 / DC3H and X700 / DC4H
PIN
AT
X700
LINE
SYMBOL
PARAMETER MINIMUM TYPICAL/
NOMINAL
MAXIMUM
1
2
VC Supply / Charging 11V
730mA
12V
800mA
13V
830mA
5 M2BUS Serial bidirection data 0V
3.0V
0V
3.6V
0.7V Input ”0” state
5.25V Input ”1” state
0.35V Output ”0” state
5.25V Output ”1” state
8 AGND analogue ground 0V 0V 0V
7 XEAR Earphone signal
dc–level
input impedance 10kΩ
130mV
2.5V
6 AGND analogue ground 0V 0V 0V
9 XMIC Microphone signal
dc–level
output impedance
200mV
2.5V
700Ω
10 AGND analogue ground 0V 0V 0V
3
4
DGND Power supply ground 0V 0V 0V
Table 17. Speaker Connector X460 / DC3H
PIN LINE
SYMBOL
PARAMETER MINIMUM TYPICAL/NOMINAL MAXIMUM
1 HFSPK HF Speaker Signal
Load Impedance
Output Power
8Ω
1W
2.83V
2 AGND analogue Ground 0V 0V 0V