DS90UH940-Q1: 480p60 Settings for CSI_TCK_TRAIL

Alex Reid1

Part Number: DS90UH940-Q1

Hello,

I noticed in the AC electrical Characteristics that specific CSI_TCK_TRAIL settings were used as listed in note 2 of the CSI-2 timing Specifications. When configuring the 940 to transmit a 480p60 video does the CSI_TCK_TRAIL setting need to be configured according to this note?

Thank you,

over 2 years ago

0 Casey McCrea over 2 years ago

TI__Guru* 98525 points

Hello Alex,

In general 940/940N will detect the video parameters and compare to a LUT in order to set the DPHY timing. If the video timing does not match a resolution in the LUT, then the DPHY timing can be optimized to ensure good margin against the DPHY CTS by using the following app note:

https://www.ti.com/lit/an/snla303/snla303.pdf?ts=1623881892238&ref_url=https%253A%252F%252Fwww.google.com%252F

Best Regards,

Casey

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DS90UH940-Q1: 480p60 Settings for CSI_TCK_TRAIL