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How to output color bar with ADV7343?

Question asked by WeilQ on Oct 31, 2011
Latest reply on Nov 2, 2011 by DaveD

Hi All,

 

I'm new to the vedio encoder chip ADV7343, now I want to verify a board with ADV7343.
I have noted in the datasheet that ADV7343 can generate a color bar itself, and I followed the configurations to write after power on as this:
Reg   Data
0x00  0xfc
0x82  0xc9
0x84  0x40
0x11  0x80
0x8c  0xcb
0x8d  0x8a
0x8e  0x09
0x8f  0x2a

 

But CVBS from DAC4 displayed nothing on the TV.
Does a Clock need to be provided or some other things need to be done when doing color bar output test ?

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