Re: [usb] USB 2.0 core Spec. First Draft

[Rudolf Usselmann <rudi@asics.ws>]

on 1/11/01 10:19, Peter Teng at peter_teng@el.nec.com wrote:

> Rudolf,
> 
> I would like to make clear that "number of transaction per uframe" register
> is not needed for PID checking. The PID checking or generation are done
> differently (see 8.6 of USB 2.0 spec for more detail).

Peter, I have read section 8.6. Please take a look at section 5.9 through
5.9.2. There it talks about high speed, high bandwidth endpoints, and PID
toggling based on how many transactions per micro frame are used.

Thanks,
rudi

> I don't understand what you meant by "I dropped the S bit as it would
> introduce to much of a latency!"
> 
> If you don't see my response within 24 business hours to your email, please
> email me using pteng@mail.com, pteng@yahoo.com or peter_teng@el.nec.com, or
> please call me direct. Sorry in advance for the trouble that may caused you.
> 
> best regards,
> "Peter" Chu Tin Teng
> Computing technology I/O Group
> NEC Electronics Inc.
> Physical address
> 3301 Olcott St.,
> Santa Clara, CA 95054