RE: pci extensions (was: *New* PCI bus standard?)

[Brooks Lame <Brooks_Lame@mcg.mot.com>]

Well, my guess would be like the x2 AGP, triggering on the rising and
falling edges of the clock.  Even though the clock is only 66MHz, that's
still pretty darn fast.  As it is, it's not easy to work with 100MHz
SDRAM.
-- Brooks

-----Original Message-----
From: Alan Deikman [mailto:Alan.Deikman@znyx.com]
Sent: Thursday, 10 September, 1998 17:54
To: Mailing List Recipients
Subject: Re: pci extensions (was: *New* PCI bus standard?)



>From: Darrel Peterson <DPeterson@mapletreenetworks.com>

>I am looking for information about the latest extensions being
proposed.
>Specifically, the extensions to double the speed of the bus to 133 MHZ.
>I seen an article that stated HP, Compaq, and IBM were working on an
>extension.  I would appreciate it if you could point me in the right
>direction.

Last weekend I posted a letter about a mention of this from
the SJ Mercury News, asking if anyone had more information.  
The September 7 issue of EE Times has this same teaser on
the front page.  The only information it added was the notion
of a 133MHz bus, and that Intel was contemplating a "competing"
I/O technology, a gigabit serial bus.

The silence on this list on this subject has been deafening.  
I can only conclude that either nobody here knows about it 
or those that do know about it have been instructed not to 
squeal.

Well, I know there are plenty of readers here who could
knowledgeably comment on the following questions:

  1.  How feasible is 133MHz bus clocking/signalling
      really with the current art of silicon?  Could
      you really pump it through a connector or would
      this be an on-board-only technology?

  2.  How would a gigabit serial bus compete with
      64-bit, 33MHz PCI?   Convenience?  Cost?
      USB and Firewire sure have been slow to take
      off.

I'd be interested in any comments.  'Till then, see
you at the FCC test sight.  ;)

Regards,

-----------------------
  Alan.Deikman@znyx.com