I have an ADV7181 dev board.
I am checking the ADV7341 on the board for CVBS out.
I am inserting a 525i YCbCr 10 bit and 20 bit signal into the AD7341, I have disconnected the ADV7181.
When I set my input for 10 bit it works fine.
When I set for 20 bit with the following inputs to the Register Control 3.56 I get a good black and white picture, but no color.
I have set register 0x80 for Y/C swap for the ADV7181 board and verified I have CbCr input to C 9-0. I have Hsync and Vsync positive.
If I set my input for EIA/DEA 861 sync compliance and Register 0x86 to 0x08 for SD EIA/CEA I get no picture.
Do you have any ideas to fix my 20 bit no color? And no picture for EIA 861 compliance?
Table 69. 20-Bit 525i YCrCb In, YPrPb and CVBS/Y-C Out Subaddress |
Setting |
Description |
0x17 |
0x02 |
Software reset. |
0x00 |
0xFC |
All DACs enabled. PLL enabled (16×). |
0x01 |
0x80 |
SD input mode. |
|
|
Y/C swap |
0x80 |
0x10 |
NTSC standard. SSAF luma filter enabled. 1.3 MHz chroma filter enabled. |
0x82 |
0xC9 |
Pixel data valid. YPrPb and CVBS/Y-C out. SSAF PrPb filter enabled. Active video edge control enabled. Pedestal enabled. |
0x88 |
0x18 |
20-bit input enabled. |
0x8A |
0x0C |
Timing Mode 2 (slave). HSYNC/VSYNC |
