PDA connectors and cables The Universal Connector was a standard port fitted to the bottom of many Palm PDA’s from 2001 to 2004.
10 pin PALM special
connector
9 pin D-SUB female
connector
| 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
