 12 pin Ericsson mobile special connector at the cellular phone |
| Pin |
Description |
Comments |
| 1 |
Audio Out |
|
| 2 |
Audio In |
|
| 3 |
Accessory Sense. GND to enable External Mic and Speaker (Analog) |
|
| 4 |
Audio Signal GND |
|
| 5 |
Portable handsfree In. |
Internal/external mic and ear (0=External - open=Internal) |
| 6 |
Music Mute Out, High when phone is used. |
|
| 7 |
In Flash Memory Voltage and Service Voltage,
In 0V=normal,+5V=test, +12V=test+flash |
Test. Switch phone off and provide +5V and switch back on. (set comms
at 9600, n,8,1) |
| 8 |
Logic Out, Status On. Sources over 100mA. |
+5V output |
| 9 |
TX (Data Out) from Mobile Station. Debug messages appear here at 112KBaud
when in debug mode. |
TTL |
| 10 |
Digital Ground and DC return |
|
| 11 |
Rx (Data in) |
TTL |
| 12 |
DC in for battery charging, DC out for accessory power |
+ external power supply 7.2Volt - 600mA |
| |
