The subsystem is packaged with the following sub-cores when it is configured with the AXI4-Stream interface:
- DisplayPort Transmitter core
- Video Timing Controller (VTC)
- DisplayPort AXI4-Stream to Video Bridge
- HDCP core with AXI Timer when HDCP feature is enabled
AXI4-Stream Video IP and System Design Guide (UG934) defines AXI4-Stream. Using AXI4-Stream removes he video timing from the bus, which enables simpler clocking, small amounts of burstiness, and improved debugging. It also enables the core to verify the incoming data using internal locked signals.
Because the DisplayPort 1.4 TX Subsystem is hierarchically packaged, the subsystem creates the required hardware after you select the parameters. The subsystem includes a multi-pixel AXI4-Stream video protocol interface and outputs the video using the DisplayPort v1.4 protocol. The subsystem works with the Video PHY Controller ( Video PHY Controller LogiCORE IP Product Guide (PG230)) configured for the DisplayPort protocol. The following figure shows the subsystem architecture for MST mode with four video streams.
