Connectors And Signals; System Bus Connector; Front Slot - Ericsson EF738 Service Manual

Connectors and Signals

System Bus Connector

1 2
3
Pin Signal
1 AFMS
2 ATMS
3 EXTAUD
4 AGND
5 PORTHF
6 MUTE
7 VPPFLASH
8 VDD
9 DFMS
10 DGND
11 DTMS
1)
12 ACCDCIO
2)
DCIO
1) System Bus Connector
2) Front Slot Connector

Front Slot

1
Note: For pin assignments, refer to System Bus Connector above
11 12
Specification
Audio-from-mobile-station
Audio-to-mobile-station
External analog audio accessory sense
Audio signal ground, 0V refernce
Portable handsfree
Music mute
Flash memory voltage and service voltage
Logic reference, status On
Data from mobile station
Digital ground and DC return
Data to mobile station
DC positive pole for phone battery charging and exter-
nal accessory powering
12
Accessories
23