EDID info from mini HDMI2AV module (HDMI to RCA CVBS)

This is the information obtained with xrandr from the HDMI to AV converter  (Composite Video + Audio on RCA plugs) shown above: Screen 0: minimum 8 x 8, current 1280 x 720, maximum 32767 x 32767 DP1 disconnected (normal left inverted right x axis y axis) DP2 disconnected (normal left inverted right x axis y [...]

USB 3.0 is a replacement, and not an extension of USB 2.0

USB 3.0 is slowly becoming increasingly common, and it’s a quiet revolution. These innocent-looking blue connectors don’t tell the little secret: They carry 4 new data pins (SSTX+, SSTX-, SSRX+, SSRX-), which will replace the existing D+/D- communication pins one day. Simply put, USB 3.0 is completely standalone; it doesn’t really need those D+/D- to [...]

Hierarchies in Orcad schematics: Please, don’t

It seems like hierarchies are to board designers what C++ is to programmers: It kills the boredom, but also the project. They will proudly show you their block diagrams and the oh-so-ordered structure, but in the end of the day, noone can really figure out what’s connected to what. Which is kinda important in a [...]

When TI’s CDCE62002 fails to lock

I really banged my head on this one: I was sure I had set up all registers correctly, and still I got complete garbage at the output. Or, as some investigation showed, everything worked OK, only the PLL didn’t seem to do anything: The VCO was stuck at its lowers possible frequency (which depended on [...]