The FreeLock Project - Siemens C/S25 Interface cable

Cabe schematic between C/S25 and the FreeLock cable

Pin Name Function Misc in / out
1 GND Ground    
2 SB Loader control LOW = 150mA-loader
HIGH = 1A-loader
in / out
3 CHARGE Loader power U = 6,1V - 8,0V in
4 BATT only S25 : power supply for accessoaries U = 3,0V - 3,9V
Umin = 2,6V
Imax = 100mA
out
5 DATA OUT PullUp inside phone out
6 DATA IN PullDown in
7 Z_CLK Accessoaries control  
8 Z_DATA Accessoaries control/data  
9 MICG GND for MIC   in
10 MIC U = 1,5Vpp  
11 AUD Speaker U = 1,5Vpp out
12 AUDG GND for speaker