Dear Technical Support Team,
I use DS90UB949-Q1 to serialize a HDMI signal to FPD LINK III ,and the derserialized point is DS90UB940. I didn't config the register except reset the bit 4 of the address 0x01 register to reset the HDMI controller after my I.MX6 board output the hdmi signal.When I read 0x5f HDMI Frequency register, I got a result 00. I conform the I.MX6 board output the HDMI signal.and the TMDS_CLK 's frequency is about 26MHz to transfer a 800*480 video signal @60 fps.I use a FFC cable to connect the HDMI signal between the I.MX6 board and 949 board
Need I config other registers to resolve the problem? What is the mechanism of the input HDMI clock locking of the 949? I measured the single end signal of the HDMI clk,and I got a poor rising edge and falling edge. Would it be the reason that I can't get the frequency of the TMDS_CLK?