DLPU035A August 2015 – December 2023 DLP4710 , DLPC3439
Table 3-4 describes the write parameters.
Parameter Bytes | Description |
---|---|
Byte 1 | External Video Source Format |
CMD Parameter | Port | Bits/Pixel | Data Type | Bus Width | Clks/Pixel | Notes |
---|---|---|---|---|---|---|
40h | Parallel | 16 | RGB 565 | 16 | 1 | Auto-select RGB CSC |
41h | Parallel | 18 | RGB 666 | 18 | 1 | Auto-select RGB CSC |
43h | Parallel | 24 | RGB 888 | 24 | 1 | Auto-select RGB CSC |
50h | Parallel | 18 | YCbCr 666 | 18 | 1 | Auto-select YCbCr CSC |
51h | Parallel | 24 | YCbCr 888 | 24 | 1 | Auto-select YCbCr CSC |
60h | Parallel | 16 | YCbCr 4:2:2 88 | 8 | 2 | Auto-select YCbCr CSC Auto-select 4:2:2 → 4:4:4 |
61h | Parallel | 16 | YCbCr 4:2:2 88 | 16 | 1 | Auto-select YCbCr CSC Auto-select 4:2:2 → 4:4:4 |
This command is used in conjunction with the Write Input Source Select command. This command specifies which input port displays when the Write Input Source Select command selects external video port as the image source. The settings for this command are retained until changed using this command. These settings are automatically applied each time the external video port is selected.
When the external video port is selected as the input source, the software automatically selects and loads the proper CSC, based on the selected parameter of this command (appropriate matrix for RGB, selected matrix for YCbCr including offset). The appropriate data path is also automatically selected for 4:2:2 versus 4:4:4 processing.
The user must review the notes for the Write Input Source Select command to understand the concept of source-associated commands. This concept determines when source-associated commands are executed by the system. This command is a source-associated command.