Power Jack/Data Port Pinout. For GPSmile 53, GR-230 Bluetooth Receiver, GR-231, GR-239 Bluetooth also ?
| Battery Charger Pin Name | Battery Charger Pin Number | Direction | Data Port to Laptop/Notebook, PDA or IPAQ Pin Number | Data Port to Laptop/Notebook, PDA or IPAQ Pin Name | Description |
|---|---|---|---|---|---|
| GND | 1 | -?- | Signal Ground - Battery Charging Ground. | ||
| VOUT | 2 | -?- | Unregulated Voltage Out: 3.6V max 100mA. | ||
| TXD | 3 | -?- | Transmit Data. From organizer to peripheral.(Voltage Level is 3.3V - 5.0V) | ||
| RXD | X | -?- | referred to as "PIN X" in URL below | Receive Data from Peripheral to Organizer (Voltage level is 3.3V - 5.0V) | |
| VCHARG | 4 | -?- | referred to as "PIN 4" in URL below | Positive Terrrminal of DC Adaptor/Powers internal Charging Circuit of Li-Ion Battery |
Power Supply for this unit is a 5.0V +/- 5% @ 1A.

