SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
In Horizontal Blanking and Vertical Blanking, non-ancillary data pixels should be Y=0x10 and Cb=Cr=0x80. When the Channel ID is embedded in the Horizontal Blanking for 2 and 4-way multiplexing, the lower nibbles of all Luma and Chroma pixels are replaced by the 4 bit Channel ID. This scenario is shown in Figure 9-53. The maximum number of values defined by this 4-bit range is 24 = 16. However, only Channel IDs in the range {0:7} are supported.
Figure 9-53 Channel ID Inserted Into Horizontal Blanking