AnsweredAssumed Answered

ADV7842 I2S Silent(only no I2Sdata signal)

Question asked by on Jun 9, 2014
Latest reply on Jun 12, 2014 by DaveD

Hi ADI expert

i also have EVAL-ADV7842-7511P board(without HDCP key), Using AVES2.exe, i just download script ":8-2 EDID Download HDMI" and ":6-1d Port A... ...": in "ADV7842-VER.5.9c_AVEB.txt";

then,By measure, MCLK=12.2883MHZ, LRCLK=48.0010KHZ, BitCLK=3.07206MHZ, which seem to be good; but on i2s DATA pin(7842 AP1, J4 PIN7), there is no signal,

Meanwhile, i see in UG235.pdf on page4, "All video inputs are available on both versions of the board. Note that a board, which is not HDCP enabled will not work with most consumer HDMI sources, thus, a devoted test source is needed. An HDCP license is required to purchase an HDCP-enabled board. A license is not required to purchase the non-HDCP-enabled board."

so my question is that due to no-HDCP key, the I2S is silent.---is it right? if so, how can i download HDCP-Key.


thanks in advance.