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ADV7188 - HVF Signals during No-Video-Input and Free-Run-OFF

Question asked by antenci on Jan 29, 2015
Latest reply on Feb 2, 2015 by antenci


I am switching the auto free run off during the initialization of ADV7188 (writing 0x34 value to adress 0x0C)but HVF (Hsync-Vsync-Field) Signals don't stop after unplugging the video cable.

I monitor the i2C signals on initialization. ACK's are recieved and everything looks normal.

1- is this normal?

2- can this happen because i don't use HVF mode? (using EAV/SAV mode instead and using HVF signals' existence for checking ADV7188 outputs are OK)