SIDC (SID controls), CV
The SID unit control panel communicates with the ICM on a wire and each button press or turn of the INFO knob is registered by the ICM. When turning the INFO knob in one direction, SIDC pin 1 will ground ICM pin 11, and when turning it in the other direction, SIDC pin 2 will ground ICM pin 12. The signal after pressing a button is sent from SIDC pin 4 to ICM pin 14. The signal is a 5 V, 960 Hz square wave (PWM), where the pulse ratio varies between 10% and 90%.
SIDC BUTTON SPECIFICATION
| SIDC button | Pulse ratio (%) |
|---|---|
| ESP or TCS | 9 |
| Soft top down | 18 |
| Soft top up | 27 |
| Night Panel | 36 |
| Brightness control + | 45 |
| No button pressed | 54 |
| Brightness control - | 63 |
| CUSTOMIZE | 72 |
| CLEAR | 81 |
| INFO knob (press function) | 90 |