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Per HDMI Spec 1.4, HPD should be pulled high to 5V through a 1kΩ resistor.
The TMDS swing specification of DVI is the same as that of HDMI.
The lowest single-ended TMDS voltage that Peicom IC can accept is 2.0V. At the same time, the max offset of the DC voltages between TMDS + and – is 0.25V.
