DLR3P data cable: ----------------- 4 VCC (BROWN) 7 RX (GREY) 8 TX (GREEN) 9 GND (BLACK & shield) ------------------------------------------------------------------------ Pin Description 1 - VIN CHARGER INPUT VOLTAGE 8.4V 0.8A 2 - CHRG CTRL CHARGER CONTROL PWM 32Khz 3 - XMIC MIC INPUT 60mV - 1V (also Device Selector) 4 - SGND SIGNAL GROUND (also DLR-3 Vcc?) 5 - XEAR EAR OUTPUT 80mV - 1V (also DLR-3 RTS) 6 - MBUS 9600 B/S 7 - FBUS_RX 9.6 - 230.4 KB/S 8 - FBUS_TX 9.6 - 230.4 KB/S 9 - L_GND CHARGER / LOGIC GND