Re:How about latency, ESD, and isolation? (Score 2, Informative)

Latency is dependent on the application. If you want a *minimum*, then sending asynch requests *typically* gets to it's destination in 5usec or less (for short msgs ... add on appropriate numbers for longer msgs, worst case packets [2k bytes at 400 Mbits/sec] would be about 80 usec). If there is a lot of traffic on the bus, and you need deterministic access with a lower max, then you need to use "isoch" requests which deliver a packet every 125 usec (with some jitter depending on the current traffic load ... worst case delay is about 200 usec). ... and the 1394b spec defines how to run gavanically isolated using UTP and various forms of optical fiber