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HDMI free running on AD9388A

Question asked by Shuggy on Jan 13, 2011
Latest reply on Jan 17, 2011 by DaveD

Any issues with this chip in free run mode when HDMI video input is lost? I set the HDMI_FRUN_EN register, pull the HDMI cable, CP_FREE_RUN status goes positive but no output of any kind (oscilloscope verifies it is just noise). However, if I reconfigure the driver to use the other port which receives composite video, the cable pull test works fine (blue screen is displayed). The PRIM_MODE, VID_STD and CP_V_FREQ registers are set to 6, 2 and 1 respectively during the HDMI free run.

 

Any ideas?

 

Thanks!

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