From: Stefan Roese <sr@denx•de>
To: linuxppc-embedded@ozlabs•org
Subject: Re: Yosemite/440EP 'issues' as a PCI target
Date: Sat, 11 Feb 2006 09:21:32 +0100 [thread overview]
Message-ID: <200602110921.33245.sr@denx.de> (raw)
In-Reply-To: <43ED7E1E.2030700@ovro.caltech.edu>
Hi David,
On Saturday 11 February 2006 07:03, David Hawkins wrote:
> Indeed you were correct. The MPC834x series meets my requirements.
> It is also a 3.3V PCI device, so I'm checking into whether
> the Trenton CPUs I can use as host CPUs use a 3.3V PCI interface.
> If that is the case, then I'll move the Force CPUs into another
> system, and I'll just define the cPCI bus in the correlator
> system as 3.3V-only.
Ahhh. ;-)
> The potential advantages of the MPC834x over the 440EP are;
>
> - it has doorbell registers and mailboxes for PCI
> host-to-host comms (though does not have an I2O interface)
>
> - its DDR-SDRAM controller can run faster than the 440EP
>
> - its external local bus is wider and faster than
> the 440EP
>
> - but I think the MPC834x internal buses are slower than
> the 440EP CoreConnect buses, so I'll need to benchmark
> to compare the two.
>
> - it exists! I can find them on distributors web sites
> (can't say the same for the 440EP yet!)
Hmmm. The 440EP is around for quite a while. I would be surprised if you
couldn't buy those parts right now. But I have to admit, I never tried to. I
would contact my AMCC distributor for availability...
Best regards,
Stefan
next prev parent reply other threads:[~2006-02-11 8:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-02 9:35 Yosemite/440EP why are readl()/ioread32() setup to readlittle-endian? Jenkins, Clive
2006-02-02 9:46 ` Eugene Surovegin
2006-02-02 14:37 ` Matt Porter
2006-02-02 17:45 ` Eugene Surovegin
2006-02-02 18:16 ` Matt Porter
2006-02-05 4:41 ` Yosemite/440EP PLB4 vs PLB3 DMA to PCI issue David Hawkins
2006-02-05 10:39 ` Wolfgang Denk
2006-02-05 23:47 ` David Hawkins
2006-02-06 18:31 ` Stefan Roese
2006-02-06 19:09 ` David Hawkins
2006-02-08 15:38 ` Stefan Roese
2006-02-08 18:43 ` David Hawkins
2006-02-09 0:34 ` Wolfgang Denk
2006-02-09 13:25 ` Mark Chambers
2006-02-09 23:58 ` Yosemite/440EP 'issues' as a PCI target David Hawkins
2006-02-10 7:47 ` Stefan Roese
2006-02-10 17:05 ` David Hawkins
2006-02-10 17:20 ` Andrew Armitage
2006-02-10 17:26 ` David Hawkins
2006-02-10 17:31 ` Wolfgang Denk
2006-02-10 17:38 ` David Hawkins
2006-02-10 17:58 ` David Hawkins
2006-02-11 6:03 ` David Hawkins
2006-02-11 8:21 ` Stefan Roese [this message]
2006-02-11 18:15 ` David Hawkins
2006-02-11 13:03 ` Wolfgang Denk
2006-02-10 17:59 ` Stefan Roese
2006-02-10 18:11 ` David Hawkins
2006-02-11 8:06 ` Stefan Roese
2006-02-11 18:06 ` David Hawkins
2006-02-11 19:00 ` David Hawkins
[not found] ` <43ECCCA2.1070007@sandburst.com>
[not found] ` <43ECCE7A.4090507@ovro.caltech.edu>
[not found] ` <43ECD19E.8010604@sandburst.com>
2006-02-10 19:13 ` David Hawkins
[not found] ` <001701c62e6c$09c48ea0$6401a8c0@CHUCK2>
2006-02-10 18:19 ` David Hawkins
2006-02-11 6:06 ` David Hawkins
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