| bottom Pin |
Name | Direction | Description |
|---|---|---|---|
| 1 | ATMS |  |
Audio to mobile |
| 2 | AFMS/RTS |  |
Audio from mobile/RTS (connected to GND in cable?) |
| 3 | CTS/ONREQ |  |
CTS/Mobile Station On REQuest (connected to GND in cable?) |
| 4 | data in | |
Data to mobile (Rx). (Tx for K300i) |
| 5 | data out | |
Data from mobile (Tx). (Rx for K300i) |
| 6 | ACC in | |
Accessory control to mobile. Used as Rx in some models (i.e. T68) for flashing. |
| 7 | ACC out | |
Accessory control from mobile/handsfree sense. Used as Tx in some models (i.e. T68) for flashing. |
| 8 | AGND | |
Audio signal ground + 0V reference |
| 9 | flash | |
Flash memory voltage + Service (shorted to pin 11 in service cable) |
| 10 | DGND | |
Digital ground |
| 11 | Vcc | |
DC + for battery charging + External accessory powering |
Pinout by Cruiser team:
| Pin | Signal | Description |
| 1 | ATMS | |
| 2 | AFMS | |
| 3 | CTS_ON | |
| 4 | DTMS | |
| 5 | DFMS | |
| 6 | CTMS | |
| 7 | CFMS | |
| 8 | AGND | |
| 9 | VPPFLASH | |
| 10 | DGND | |
| 11 | DCIO |
CTMS stands for Control To Mobile Station; CFMS stands for Control From Mobile Station; DTMS stands for Data To Mobile Station; DFMS stands for Data From Mobile Station
Standard cable is Sony Ericsson DCU-11
The (Tx)&(Rx) are reverse for K300i model, you must connect CTS & DGND together on board and connect the common wire to CTS(Pin3) in phone connector. If your cable is working fine then dont change it.
correct
incorrect