Differential POD Termination - Differential POD Termination - UG861

The following figure shows a sample circuit illustrating a termination technique for differential POD (1.0V, 1.2V) with unidirectional termination and with matched driver and receiver termination values. In a specific circuit, all drivers and receivers must be at the same voltage level (1.2V or 1.0V); they are not interchangeable (that is, DIFF_POD12 should only interface with DIFF_POD12).

Figure 1. Differential POD with Unidirectional Signaling

The following figure shows a sample circuit illustrating a termination technique for differential POD (1.0V or 1.2V) with bidirectional termination and with matched driver and receiver termination values. In a specific circuit, all drivers and receivers must be at the same voltage level (1.0V or 1.2V); they are not interchangeable (that is, DIFF_POD10_DCI should only interface with DIFF_POD10_DCI).

Figure 2. Differential Pod with Bidirectional Signaling

The following table lists the allowed attributes for POD I/O standards. Support is implied for primitives that are derivatives of the primitives listed in the following table (for example: *_DIFF_OUT, *_DCIEN, *_IBUFDISABLE, or *_INTERMDISABLE). Refer to SelectIO IOB Interface Primitives for all supported derivatives.