Re: Trhfa for PCI-X

[Jason Baumbach <gjb@cypress.com>]

All,
	This question is now dead... apparently version 1.0a of the spec
changed it to 2^26.  Thanks for everyone's input.

Jason

Jason Baumbach wrote:
> 
> Khai,
>         Now it gets interesting... I have since found version 1.0 of the PCI-X
> spec (someone else in the company had it), and it says on page 187 that
> Trhfa for PCI-X 133 and PCI-X 66 is 2^27 clocks.  Has the PCI-X spec
> been revised beyond my version 1.0 September 22 1999 copy?
> 
> Jason
> 
> "Khuu, Khai" wrote:
> >
> > Yes, I'm very sure.  I just had a PCI-X class from Mindshare earlier this
> > week.
> > I got the number (2^26) from the handout given in the class.  As a matter of
> > fact,
> > the instructor pointed out in the class that in the early version of his
> > handout
> > the number was 2^27 and that was an error.  I'm sure the person who gave you
> > the number 2^27 has one of those early handouts from Mindshare.
> >
> > -----Original Message-----
> > From: Jason Baumbach [mailto:gjb@cypress.com]
> > Sent: Thursday, December 07, 2000 11:41 AM
> > To: Khuu, Khai
> > Subject: Re: Trhfa for PCI-X
> >
> > Khai,
> >         Are you sure it's 2^26?  Someone else just replied and said 2^27.
> >
> > Jason
> >
> > "Khuu, Khai" wrote:
> > >
> > > 2^26 clock cycles
> > >
> > > -----Original Message-----
> > > From: Jason Baumbach [mailto:gjb@cypress.com]
> > > Sent: Wednesday, December 06, 2000 5:11 PM
> > > To: pci-sig@znyx.com
> > > Subject: Trhfa for PCI-X
> > >
> > > Hello,
> > >         Does anyone know the clock freq and Trhfa spec for PCI-X?  I know
> > > PCI
> > > 66MHz and 33MHz are 2^25 clock cycles, but I don't know what the
> > > corresponding values are for PCI-X.  Thanks!
> > >
> > > Jason Baumbach