I have a question about ADV7390.
To support 720*480p 27MHz DDR with Vsync and Hsync, resister 0x01 must set to 0x20.
=> to select ED/HD-DDR input.
Is this correct?
One of our customer are already using ADV7390 with 720*480p 27MHz DDR for more than 2 years.
But they set the resister 0x01 to 0x70.
=>ED (at 54 MHz) input.
But they have never seen the problem .
So they want to know which is correct.
0x01 => 0x20? 0x70?
Also they don't want to change the resister 0x01 => 0x70 , because they don't want to take the risk to change the software.
Is it OK to use 0x70?
Is there any risk about this?
Also can you tell me 0x70(=>ED (at 54 MHz) input.) works with 27MHz DDR system?
Also they want to know that this resister setting is correct or not.
Can you give some advice about this?
0x39 bit5 = ED/HD EIA/CEA-861B synchronization compliance
What is this for?
Can you explain about this?
We want to know this because even if we change this resister , nothing happens.
I know that sample script is very important but if you can give us some advice , it will help us very much.