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ADV7441A - fixing color swap with DVI input disconnect?

Question asked by BTG Employee on Feb 4, 2014
Latest reply on Mar 10, 2014 by PaulS

Have DVI input on ADV7441A link A, 20-bit 4:2:2 pixel output on P[19:0] (CP processor mode 7). When the DVI cable is unplugged and re-plugged, the blue and red may swap. How do I fix this problem? How do I generate an interrupt in the event of cable disconnection?

I've tried the following without success:

  1. Enable or disable CP_CSC.
  2. INP_COLOR_SPACE[2:0]: Automatic input color space selection, or RGB 3. Enable or disable PLL_FREE_RUN_EN.
  3. Enable or disable HDMI_FRUN_EN.
  4. Set the mask bits on CP_UNLOCK_MSKB, TMDS_CLK_A_MB1, VIDEO_PLL_LCK_MB1, but unable to trigger an interrupt when unplug the cable.

Note that we don't see the color swap problem on CVBS input.


Any suggestiosn would be most appreciated.  Thanks.