Re: [Arm-netbook] EOMA68-A20 2.7.4 pre-production prototypes received and working

2017-06-15 21:01 GMT+02:00 Luke Kenneth Casson Leighton lkcl@lkcl.net:

okaay so the HDMI connection isn't so hot on these 2.7.4 boards. it works... but there is significant line-interference under certain circumstances, even for 720p50. 1080p60 there is huge amounts of interference resulting in green horizontal lines. *sigh* i'll just have to have another go at the layout... blech.

How about having GND tracks parallel to each Tx/Rx pair. Creating a sink for EM signals to drain into instead of crossing over.

---GND----0 ---Tx------[ ] ---Rx------[ ] ---GND----0 ---Tx------[ ] ---Rx------[ ] ---GND----o