Hi, champ,
I could find impedance spec which are 38,40,76,80,85,90,100,120 ohm in stackup document of SK-TDA4VM.
is it necessary to match all the impedance? I couldn't find 120, 38 ohm in the Jacinto 7 High-Speed Interface Layout Guidelines.
Please let me know if there is another document describes which interfaces need 38,40,76,80,85,90,100,120 ohm each,
