HDMI Reference Source
33.
Link Tab
Link tab shows the status and control items for the HDMI link.
HPD
The status LED indicates the state of the HPD signal Asserted (logical “high”) or De-
asserted (logical “low”).
HDMI Behavior
Selection of the HDMI version to be used.
Status
Mode:
Indication of the HDMI/TMDS mode (HDMI/DVI) (only in TMDS mode)
Behavior:
Status of the HDMI Mode (HDMI 1.4 / HDMI 2.0 / HDMI 2.1).
TMDS Bit Clock Ratio:
Status of (TMDS Bit Period) / (TMDS Clock Period) ratio (1/10 or
1/40) (only in TMDS mode)
Scrambling:
Status of Scrambling_Enable bit (1=LED on; 0=LED off)
Receiver / Sink Capabilities
Status of connected HDMI Sink device.
Mode:
Status of Max_TMDS_Character_Rate byte in the sink’s VSBD
Behaviour:
Used HDMI mode
TMDS Bit Clock Ratio:
Status of the TMDS_Bit_Clock_Ratio (1/10 / 1/40)
FRL Support:
Sink’s FRL support level as indicated in sink’s HF-VSDB
VRR Support:
Lowest frame rate and upper limit of the frame rate that sink is able to
support using Variable Refresh Rate as indicated in sink’s HF-VSDB
ALLM Support:
Indication of Auto Low-Latency Mode support in sink’s HF-VSDB
Error counters:
Check for reading sink SCDCS error counters. Results below.
