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problems in debugging adv7842

Question asked by tony2000 on Sep 22, 2015
Latest reply on Sep 23, 2015 by GuenterL

Hello, we have problems in debugging adv7842:

I2C address is as follows: adv7842,

40 F1 90

40 F2 94

40 F3 84

40 F4 80

40 7C F5

40 4C F8

40 F9 64

40 6C FA

40 FB 68

40 FD 44

40 FE 48

but read back as follows:

40 F1 00

40 F2 00

40 F3 00

40 F4 00

40 F5 00

40 F8 00

40 F9 00

40 6C FA

40 FB 68

40 FD 44

40 FE 48

, F1-F9 are not successful, what is the cause ,but  the HDMI configuration and back to normal, HDMI have been normal work, i do not know how to debug the CVBS, Thank you.

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