X100 system connector for nokia 2110i/e pinouts By D. Kwan ANT 16 9 Charging connector (O) I-I-I-I-I-I-I-I-I ( ) ( o ) CON 8 1 My ascii isn't great so a word of explanation. The left symbol (O) is the antenna connector for car kits. The symbol numberd 16-9 on the top and 8-1 on the bottom is the system connector. the ( ) is the open space next to the connector and the ( o ) is the charging connector for you home-charger. Description of X100 PIN Name Description --- ---- ----------- 1,9 GND Digital ground 2 MIC/JCONN External audio input from accessories or handsfree microphone. Multiplexed with junction box connection control signal 3 AGND Analogue ground for accessories 4 TDA Transmitted DBUS data to the accessories 5 M2BUS Serial Bidirectional data and control between the handportable and accessories 6 HOOK/RXD2 Hook indication. HP has a 100KE pull-up resistor. 7 PHFS/TXD2 Handsfree device power on/off, data to flash programming device. 8,16 VCHAR Battery charging voltage 10 EAR/HFPWR External Audio output to accessories or handsfree speaker 11 DSYNC DBUS data bit sync clock 12 RDA DBUS recieved data from the accessories 13 BENA Power supply to headset adapter 14 VF Programming voltage for FLASH 15 DCLK DBUS data clock As you can imagine. YOU CAN DESTROY YOUR NOKIA BY FOOLING AROUND WITH THESE CONNECTIONS. Therefor I accept NO responsability for any possible damages. My advice to you is to think twice before doing something and if you are going to try make use of a car-kit holder to get access to the X100 connector since it is to tiny to use a self-fashioned connector. IT IS POSSIBLE TO REPROGRAM THE NOKIA 2110 as is indicated by the pinout description so watch it ! --end