cellphone cable and connector wiring scheme
4 pin USB A
/ USB B / mini-USB jack connector to the PC cable
12 pin Siemens Slim Lumberg cell phone special connector to the
mobile phone
| Pin | name | Signal |
|---|---|---|
| 1 | Vbatt? | Power Charging (Vbus) |
| 2 | Gnd | GND (USB GND) |
| 3 | Tx | TX (USB D+) |
| 4 | Rx | RX (USB D-) |
| 5 | CTS | CTS, Data Line For Accesory |
| 6 | RTS | RTS, Data Line For Accesor |
| 7 | DCD | DCD, Clockline For Accesory |
| 8 | Audio P | AUDIO L |
| 9 | - | AUDIO GND |
| 10 | Audio N | AUDIO R |
| 11 | GND Mic | GND (EXT MIC.) |
| 12 | EPP | EPP 1 (EXT MIC.) |
