Tool/software:
Hi
My HDMI waveform is eyediagram is not meet spec.
And when I already try SRC tuning on H and Hi-Z.
In H status , HDMI waveform is too big,
but in Hi -z is not big enough.
Can try other value on SRC to fine tuning HDMI waveform ? ex VDD *2/3
and is there any limitation on SRC , like current or voltage ?
please let me know, thank you
The SRC pin on the SN75DP139 is used to control the slew rate of the HDMI outputs:
If the swing level seems to be the issue, its best to tune the Vsadj pin which will adjust the voltage swing of the output.
Increasing the resistor level will decrease the Differential Output Voltage, and reducing the resistor level will increase the Differential Output Voltage.
