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When I change the source at ADV7627, there is not a sound in the monitor very rarely.

Thread Summary

The user experiences rare audio loss when changing input sources on the ADV7627. The final answer suggests checking the MAIN_RST register (0xFF) for resets and the fifo_near_ovfl_rx1_raw (0x6B[7]) and fifo_near_ovfl_rx2_raw (0x8E[7]) registers for audio FIFO overflow status. It also recommends ensuring the ADV7627 is in HDMI mode and implementing a periodic reset mechanism to prevent internal state issues after multiple source changes.
AI Generated Content
Category: Hardware
Product Number: ADV7627

I'm a hardware engineer in Japan.

e.g. PC, Blu-ray(3 sources) → ADV7627 → monitor.

When I change input source at ADV7627, there is not a sound in the monitor very rarely.

Do I have to change some setting at the time of a source change?

Best regards.