10 pin PALM special connector
9 pin D-SUB female connector
This page documents the 10-pin proprietary interface port found at the bottom of the Palm Pilot, Palm III, V, VII, VIIx, and HandEra PDAs, used for serial synchronisation, HotSync triggering, and power input. The signal layout is specific to this family of devices and varies slightly between models, as noted below. Only the ten listed pins are covered here.
| Pin | Signal | Description |
|---|---|---|
| 1 | DTR | non-standart implementation of DTR. As long as the transceiver is enabled this pin outputs an asserted signal. 3.0 volts when transceiver shutdown (normal mode), 6.0 volts when transceiver enabled (Hotsync) |
| 2 | Vbat, +3.3v | normally connected to HotSync (pin 7) with button |
| 3 | RxD | GPS T |
| 4 | RTS | |
| 5 | TxD | GPS R |
| 6 | CTS | |
| 7 | HotSync IRQ | link to 3.3v (pin 2) for HotSync. Interrupt line for waking up device (initiate HotSync process in PalmOS). |
| 8 | ID | Palm modem connect this pin to 3.3v (pin 2) by 20Kohm link |
| 9 | N/C* | DC In in Palm III (+5VDC) |
| 10 | GND | GPS - |
Notes
- Palm V does not contain an internal charging circuit.
- Maximum transmission rate is 115200 bps (57600 bps for modem).
Palm Serial cable scheme
References
- Palm, Inc. — Electrical Interface (10-Pin) Connections (2001) — Palm, Inc.; 10-pin device interface pinout.