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