This page documents the proprietary 12-pin connector used by third-party data and accessory cables for the Maxon SP-300 series mobile phones. The pin layout is specific to this handset family and is not interchangeable with other models. Only the pins relevant to the cable interface are listed below.
| Pin | Name | Description |
|---|---|---|
| 1 | Data | |
| 2 | Clock | |
| 3 | N/C | |
| 4 | +7.5V | |
| 5 | N/C | |
| 6 | N/C | |
| 7 | Gnd | |
| 8 | Mic+ | |
| 9 | N/C | |
| 10 | Int_Spkr_Mic_Dsbl | |
| 11 | Spkr+ | |
| 12 | N/C |
Notes
- Pin 1 is top right pin