> Unfortunately the isolation barrier circuit have an enable propagation > delay of 8.5µs maximum either to low or high while a 11 byte packet take > 17.6µs so this delay will use about a third of the bandwidth at 10Mbit/s > and it will become worse if packets are smaller or speed increased. > > Do you really need isolation across an SPI link? Why not just use a common ground.
You do want isolation between the high voltage motor and the digital controller. But if you already have this you don't need another layer. Ethernet is galvanically isolated and runs at 1GHz. Proof that you could isolate your 10MHz SPI link but do you need to? -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
