SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The four-bit channel ID is an identifier corresponding with the source number (camera) of the incoming video. As shown in Table 9-17, the Channel ID is placed in the code fourth byte of the EAV/SAV code words normally used for protection bits. With 4 bits, the maximum number of sources that can be defined in this range is 16. However, only Channel IDs in the range {0:7} are supported. Obviously, error correction cannot be performed on the FVH flags since the protection bits are no longer there.
7 (fixed) | 6 (F) | 5 (V) | 4 (H) | 3 (ch_id[3]) | 2 (ch_id[2]) | 1 (ch_id[1]) | 0 (ch_id[0]) | Description |
---|---|---|---|---|---|---|---|---|
1 | 0 | 0 | 0 | Ch_id = {0:15} | SAV, Field 0, Active Video | |||
1 | 0 | 0 | 1 | Ch_id = {0:15} | EAV, Field 0, Horizontal Blanking | |||
1 | 0 | 1 | 0 | Ch_id = {0:15} | SAV, Field 0, Vertical Blanking | |||
1 | 0 | 1 | 1 | Ch_id = {0:15} | EAV, Field 0, Horizontal Blanking in Vertical Blanking Region | |||
1 | 1 | 0 | 0 | Ch_id = {0:15} | SAV, Field 1, Active Video | |||
1 | 1 | 0 | 1 | Ch_id = {0:15} | EAV, Field 1, Horizontal Blanking | |||
1 | 1 | 1 | 0 | Ch_id = {0:15} | SAV, Field 1, Vertical Blanking | |||
1 | 1 | 1 | 1 | Ch_id = {0:15} | EAV, Field 1, Horizontal Blanking in Vertical Blanking Region |