My customer is evaluating our DP159RSBEVM. Could you please kindly advice the purpose of R1-4 and R6-9 ?
If customer use source side == HDMI, How to handle this section? I guess Page#6 show it but I am not sure detail.
Thanks for your support.
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My customer is evaluating our DP159RSBEVM. Could you please kindly advice the purpose of R1-4 and R6-9 ?
If customer use source side == HDMI, How to handle this section? I guess Page#6 show it but I am not sure detail.
Thanks for your support.
Hi,
The HDMI is a DC-coupled, 3.3V common mode voltage interface. When using the DP159 with a HDMI source. the DP159 requires its input to be AC coupled. But the HDMI source expects to see a HDMI sink with 50ohm termination to 3.3V. So R1-4 and R6-9 are used to mimic the sink termination to satisfy the HDMI source requirement while the AC-coupling caps are used to satisfy the DP159 input.
Thanks
David