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Problem with ADV7619 consistently locking to an Apple IPAD.

Question asked by SHH on Dec 1, 2014
Latest reply on Jan 29, 2015 by mattp

Problem with ADV7619 consistently locking to an Apple IPAD.

Format is 1080p59.94.

1) The following signals indicate correct operation.

TMDSPLL_LCK_A_ST

TMDS_CLK_A_ST

V_LOCKED_ST

DE_REGEN_LCK_ST

STDI_DATA_VALID_RAW

CP_UNLOCK_RAW

CP_LOCK_RAW

 

2) Monitoring the HSYNC pin with a Frequency Meter

When locked the H rate is 67433 Hz.

When not locked the H rate varies between 67433 Hz and 67448 Hz.

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