12 PIN OUT SONY ERICSSON

official cable is DCU-60

 

Pin	Signal	Description
1	USB +5V in	USB 5V supply - not used in K750
2	SP_REF	Reference / GND for handsfree
3	Mic+/AUXIN_L	Mic + / AUX in (left)/ short with pin 4 for handsfree answer (*)
4	Mic-/AUXIN_R	Mic - / AUX in - (right) / short with pin 3
5	DFMS/SP_L	DFMS / Earphones left
6	DTMS/SP_R	DTMS / Earphone right
7	VIDEO/STB	Video / strobe
8	VPPFLASH	short with pin 9 via R=130 Om for handsfree detection
9	GND	Ground
10	CTMS / USB DATA+	CTMS / USB+ (data) - not used in K750
11	CFMS / USB DATA-	CFMS / USB- (data) - not used in K750
12	Charge In	Battery charge (+5V) - not used in K750

 Used Shortcuts:

 * 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

 Notices:

The key in near pin 1.

If you want to make a stereo converter with a SE socket, you should use pins 5 and 6. It may not work well with an amplifier due to low output i.e. just enough power for headphones . (May need pre-amp).

Suggestion:

To make a stereo-amp using the cell phone you must shortcircuit pins 8 and 9. Then connect the outputs (L) (R) (GND) using pins 5 = (left), 6 = (right) and 9 = (GND).

Sony-Erisson Walkman original handset uses pins 2 (GND), 5 (Left) and 6 (Right).

(*) For incoming call answering short pin 3 and 4

Headset for S302 and similiar phones pinout: R pin 7, L pin 8, pin 11 is GND for both channels and probbably for microphone too. Active gain should be between 50 and 200 for LM386.