Re: Trhfa for PCI-X

[Jason Baumbach <gjb@cypress.com>]

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