The USB PICs only support the lowest-speed (1.5 Mbps), lowest-
    functionality mode of USB, and low-speed devices max out at one 8-
    byte packet per 10-ms polling interval, or 800 bytes/second.  You can
    get a little extra speed by doing antisocial things like sending data
    over a "control" endpoint, but even that won't let you do much better
    than 1000 bytes per second.

    Full-speed (12 Mbps) devices can transfer bulk data over one thousand
    times faster:  A full-speed chip like Cypress's EZ-USB FX can
    transfer 19 64-byte packets per 1-millisecond frame.  19 * 64 * 1000
    = 1,216,000 bytes per second.

Hmm.  Who, if anyone, has low speed capability closer to 1Mbit/sec, if
I don't care about "full speed", but want "faster than a mouse."  Or do
I need to go to a "full speed" device to get close to the top of the
low-speed range?

Thanks
BillW

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.