Pin Signal Description
1 USB +5V in USB 5V supply - in K750 not used
2 SP_REF Reference / headphone gnd
3 Mic+/AUXIN_L Microphone+ / AUX Input - left / Short to 4 for Answer button (*)
4 Mic-/AUXIN_R Microphone- / AUX Input - right / Short to 3 for Answer button (*)
5 DFMS/SP_L DFMS / headphone speaker - left
6 DTMS/SP_R DTMS / headphone speaker - right
7 VIDEO/STB Video / strobe
8 VPPFLASH Short to pin 9 for handsfree detection (use a 130 ohm r)
9 GND Ground
10 CTMS / USB DATA+ CTMS / USB+ (data) - in K750 not used
11 CFMS / USB DATA- CFMS / USB- (data) - in K750 not used
12 Charge In Battery charging (+5V) - in K750 not used
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
1 USB +5V in USB 5V supply - in K750 not used
2 SP_REF Reference / headphone gnd
3 Mic+/AUXIN_L Microphone+ / AUX Input - left / Short to 4 for Answer button (*)
4 Mic-/AUXIN_R Microphone- / AUX Input - right / Short to 3 for Answer button (*)
5 DFMS/SP_L DFMS / headphone speaker - left
6 DTMS/SP_R DTMS / headphone speaker - right
7 VIDEO/STB Video / strobe
8 VPPFLASH Short to pin 9 for handsfree detection (use a 130 ohm r)
9 GND Ground
10 CTMS / USB DATA+ CTMS / USB+ (data) - in K750 not used
11 CFMS / USB DATA- CFMS / USB- (data) - in K750 not used
12 Charge In Battery charging (+5V) - in K750 not used
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