On Wed, Aug 23, 2017 at 8:04 PM, Richard Wilbur richard.wilbur@gmail.com wrote:
On Aug 22, 2017, at 10:09, Luke Kenneth Casson Leighton lkcl@lkcl.net wrote:
SATA was on a very preliminary version of EOMA68. it was cut a long time ago.
Sorry for bringing up old news.
ey no problem it's all interesting stuff
MicroSD card reading (and other SD/MMC / SDIO compatible interfaces). i *think* it's a max datarate of 50mhz....
Sounds like SD0 is high-frequency single-ended so it might warrant a ground shield trace--if there's room.
there is... just!
But I would rather maintain the 15mil differential pair trace to any other trace spacing because I'm guessing the coupling to differential pairs will be small. (It is not parallel to differential signals for a significant distance, is it?)
nono - they run round the back of the vias (attached) - yellow, 6 lines.
l.
