XV_HDMIRXSS1_HANDLER_STREAM_DOWN - 1.2 English

HDMI 2.1 Receiver Subsystem v1.2 Product Guide (PG351)
Document ID
PG351
Release Date
2023-10-31
Version
1.2 English

This interrupt is triggered when an HDMI video stream becomes unlocked.

The callback function must perform the following steps:
  1. Check if the video mode is not XHDMIC_VIDMODE_HDMI_FRL.
  2. Power down the PHY MMCM.
    void XHdmiphy1_MmcmPowerDown(XHdmiphy1 *InstancePtr,
                             u8 QuadId,
                             XHdmiphy1_DirectionType Dir,
                             u8 Hold)
  3. Disable the PHY CLKOUT1 OBUFTDS peripheral.
    void XHdmiphy1_Clkout1OBufTdsEnable(XHdmiphy1 *InstancePtr,
                                    XHdmiphy1_DirectionType Dir,
                                    u8 Enable)

The callback function can update stream down information to the application software. The application software might start a timer and put the system into standby mode if the HDMI 2.1 RX Subsystem remains unlocked for a certain time.