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
