Hello GuenterL,
Thank you for your advice.
Please let me know about below our some question.
Question１）
>The Transmitter DDC clock is fixed by an internal ring oscillator.
Why is the reason which DDC clock is fixed though Below URL recommend 20KHz of DDC clock
Please let me know your advice.
URL http://ez.analog.com/docs/DOC-1429
Question2）
>I2C specification also specifies max capacitive load which I believe 50m is too much.
We understand that 50m is too much for I2C specification.
We think that some of ADI HDMI equalizer guarantee 30m cable but this is too much for I2C.
Do you think that DDC communication can not be done in the case of over I2C specification (for example, cable length is too much)?
Question3）
>Also 50 meters of cable may have too much loading for the TMDS signals.
>In other words video might not be received at the sink.
Customer uses competitor’s HDMI product too and equalizer of the product can deliver TMDS signal for 50 meters.
So, this issue is resolved.
Do you have plan to improvre your ADMI product ?
Regards,