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HDMI 1.4/2.0 TX Subsystem
101
PG235 October 4, 2017
Appendix
C:
Application Software Development
XVPHY_HDMI_HANDLER_TXINIT
This interrupt is triggered every time the Video PHY Controller detects an HDMI TX
reference clock changes.
The callback function needs to initialize a reference clock change process for HDMI 1.4/2.0
Transmitter Subsystem.
void XV_HdmiTxSs_RefClockChangeInit(XV_HdmiTxSs *InstancePtr);
XVPHY_HDMI_HANDLER_TXREADY
This interrupt is triggered every time the Video PHY Controller TX reset lock is done or
when Video PHY Controller TX alignment is done.
The callback function can update the Video PHY ready for TX information to the application
software.
Follow the steps in
to create an example design, which contains
all the procedures implemented and can serve as a reference for integrating the HDMI 1.4/
2.0 Transmitter Subsystem into your system.
Example Use Cases
In this section, some typical use cases are illustrated with how system reacts at run time to
certain events and what is expected for you to perform. For actions expected in the callback
functions, see
Application Callback Functions
Use Case 1: Cable Plug In
HPD interrupt is received indicating Cable Connection.
• Callback function registered to
Interrupt type is
called.
Use Case 2: Cable Plug Out
HPD interrupt is received indicating Cable Disconnection.
• Callback function registered to
Interrupt type is
called.
Use Case 3: Send Infoframe
Vertical Sync (VS) interrupt is received.
• Callback function registered to
Interrupt type is called.