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DS90UB941AS-Q1: DPHY_STATUS Register (Offset = 0xF)

Part Number: DS90UB941AS-Q1


Dear expert,

I want to monitor whether video data is active with DPHY_STATUS Register (Offset = 0xF).

I find when DSI video is active, DPHY_STATUS Register return 0x1F which is correct. When DSI data is off(DSI clock is still active),  DPHY_STATUS Register return 0x44 first. Then after around 2s, DPHY_STATUS Register return 0x10 which is correct. 

Is it as expected? And Why?

This is tested in customer board.