Subject: Re: SCSI speed in SS2 and SSClassic
To: None <Chris.Smith@raytheon.co.uk>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: port-sparc
Date: 03/14/2001 11:18:18
On Wed, Mar 14, 2001 at 10:08:02AM +0000, Chris.Smith@raytheon.co.uk wrote:
> > Well, it seems that because of its clock (25Mhz)  it can only do
> 8.064MB/s
> 
> Bus clock I assume?  Dont forget SBus is 32 bits (4 bytes), so
> thats really 100MB/s over the bus maximum!!  I'm sure the SCSI
> controller has the brains to shuffle the data about
> efficiently.

Yes, of course. The issue is that with the 25Mhz clock input the chip can't
generate a 10Mhz SCSI clock. It seems that the best it can do it around
8Mhz (25 /3 I guess).

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--