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DS90UB964-Q1: PatternGen: Vertical Front/Back Porch and Blanking requirements

Part Number: DS90UB964-Q1

What are the practical considerations behind the vertical frame blanking parameters indirect page0:(0x0E PGEN_VBP, 0x0F PGEN_VFP).

Are these extra lines strictly necessary, considering that the FPDlink caries backchannel data over another channel, thereby not strictly needing the time between frames to carry information?


Any detriments to setting these values to 0x00, such that the total vertical lines (0x0A, 0x0B) are the same as the active vertical lines (0x08, 0x09)?

Thanks,