Pin | Signal | Description |
1 and 2 | gnd | |
3 | tck | |
4 | tms | |
5 | tdi | |
6 | tdo | |
7 | Rx | |
8 | Tx | |
9,18 | Vbat | +4V? |
10 | rpwon | |
11 | rxd | |
12 | txd | |
13 | dsr | |
14 | rts | |
15 | cts | |
16,17 | dc in | Charger input, +5.2V |
Another variant of pinout (rx,tx only). Phone is keypad UP. Pins counted from left to right
Pin | Signal | Description |
1 | GND | |
7 | Rx | |
8 | Tx |