| Pin | Signal | Description |
| 1 | GND | Signal- and charge ground (connected to pin 7) [ GPS Ground ] |
| 2 | USB_D+ | Positive USB data signal |
| 3 | USB_D- | Negative USB data signal |
| 4 | VBUS | VBUS signal |
| 5 | HOTSYNC | HotSync IRQ - +3.3V for button push |
| 6 | N/C | Not Connected |
| 7 | GND | Signal- and charge GND (connected to pin 1) |
| 8 | ID | Identification for peripherials, resistor to ground. Should be short: USB cradle, 7.5 KOhm: Serial cradle, 20 KOhm: Mfg. Test Cradle, 47 KOhm: USB peripheral, 100 KOhm: Serial peripheral, 220 KOhm: modem |
| 9 | Vout | +3.2V supply output, 100mA max. |
| 10 | RxD | RS-232 RxD signal (input), [GPS TX ] |
| 11 | TxD | RS-232 TxD signal (output), [ GPS RX ] |
| 12 | DETECT | peripherial detect - tied to ground by peripherials |
| 13 | CTS | RS-232 CTS signal (input) |
| 14 | RTS | RS-232 RTS signal (output) |
| 15 | DTR | RS-232 DTR signal (output) |
| 16 | CHARGE | +5V charge supply input, 500-700mA |
Palm USB cable:
Palm Universal connector (Tungsten T1, T2, T3, etc) has RS232 signals at RS-232 compatible levels, no voltage level translator from TTL to RS232 is needed. You can connect signals from your Palm Universal connect directly to PC or other compatible serial device.
PC-Palm synchronisation cable pinout:
PALM UNI === PC DB9 Female 11 (TxD) --- 2 (RxD) 10 (RxD) --- 3 (TxD) 1 (GND) --- 5 (GND) 15 (DTR) --- 6 (DSR) 13 (CTS) --- 7 (RTS) 14 (RTS) --- 8 (CTS)
