Output Ports
| Parameter | Required | Description | Comments | 
|---|---|---|---|
| o | Yes | Output port. Represents the positive pin of a differential I/O standard. | Must connect to the device's output pin or to a wire that connect to a device's output. There must be no logic between the o port and device's output pin. | 
| obar | Yes | Output port. Represents the negative pin of a differential I/O standard. | Must connect to the device's output pin or to a wire that connect to a device's output. There must be no logic between the obar port and device's output pin. |