Does the ADV7181C support square pixel operation for NTSC video inputs?
The manual does not contain a bit for enabling square pixel operation in register 0x1, but
square pixel operation is reference in Table 19.
Please check whether the following threads are helpful to you
ADV7181C - NTSC Square Pixel Output
ADV7181B RGB 4:4:4 640 x 480i configuration
I saw that thread; I'm not sure what he meant by
I was taking for granted that you have to change the pixel clock.
Does that mean write 0xCC to register 0x01?
Sorry.Unfortunately square pixel mode is not supported for the ADV7181C
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