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DS90UB926Q-Q1: output chromatic distortion

Part Number: DS90UB926Q-Q1
Other Parts Discussed in Thread: ALP

Hi Team,

My customer used the DS90UB949 connect to the DS90UB926 for ADAS application, the signals input via the HDMI cable to UB949, the UB926 used RGB565 output to AR HUD(720p).

They used the external RGB test pattern and saw the chromatic distortion on HUD output, but they used the ALP GUI test pattern and saw the HUD output is normal. 

They also found those pin-out of R4/G4/B4 have different wave-forms for two-type input.

May I know how to fix this issue? I paste the DS90UB949/926 register values file for different test conditions as below.

DS90UB926 output test data:

DS90UB926 output test data.xlsx

DS90UB949 and DS90UB926 register files:

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/138/DS90UB926.7z