On September 24, 2016 at 12:42, Dean Roddey said...
I always thought that HDMI was a serial interface, but some reading indicates it's not. That's surprising. It's actually three parallel twisted pair connections, so they have to be kept in sync, within the tight constraints of the really high bit rate of HDMI at 1080p and beyond.
Here's an informative article for those of us who haven't immersed ourselves in this issue:
[Link: bluejeanscable.com]And that's the reason the traces need to be the same length. A small difference at these frequencies makes enough of a difference, but as I wrote, they (Spectrum) could have dealt with it internally, rather than force integrators to deal with their crap.
