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ADV7513 PLL not locked

Question asked by avjkf on Jul 18, 2012
Latest reply on Jul 20, 2012 by avjkf

My customer are designing a product with ADV7513.

But when input higher speed resolution more than VGA,

PLL of ADV7513 can not be locked(Register 0x9E=0x00).

When input VGA, PLL can be locked.

Their ADV7513 have another incomprehensible issue.

The voltage on R_EXT pin equals approximately 1.0V

R_EXT voltage of ADV7511 on Eval boards(ADV7612, ADV7842, etc.) are approximately 0.5V.

Could anyone know why Their ADV7513 could not be locked and R_EXT voltage is approximatly 1.0V?

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