6.1. Design Example Simulation Features
The full simulation variant sends video through the MIPI DSI-2 TX and MIPI D-PHY TX and loops back the MIPI serial signals to the MIPI D-PHY RX IP. It thens recovers and checks the video data. This gives an accurate view of the operation of the MIPI subsystem to the MIPI D-PHY external I/O level.
The fast simulation variant ignores the MIPI D-PHY IPs and performs loopback at the PPI level. A simple PPI loopback module replaces the MIPI D-PHY IPs and adapts from the PPI TX to PPI RX signaling while mimicking the MIPI D-PHY flow control. This allows the simulation to run much faster and generally provides a sufficient view of the way that the MIPI DSI-2 TX IP functions. The operation of the simulation is otherwise identical to the full simulation variant.