RE: [iPAQ] Cpu scaling ??

From: Hicks, Jamey <Jamey.Hicks.a.t.compaq.com>
Date: Wed Jan 09 2002 - 08:29:38 EST

> The new SA1110 clock change code doesn't hang the system, but
> only when
> it has an _exact_ knowledge of the SDRAM memory timing parameters.
> Because we don't have that kind of knowledge about the Ipaq (you can't
> even read the SDRAM type numbers because the chips are nicely
> shielded), we can't guarantee stability for the Ipaq. The
> best thing to
> avoid lots of crash reports is to remove the support at all and put it
> back when somebody is kind enough to supply the seven SDRAM
> parameters.
> Sorry: no pain, no gain.

Erik,

I know you have a soldering iron. A little shield isn't that difficult
to deal with. We did that along time ago on early H3600 and found
Samsung KM416S8030C (that might be the old part numbering scheme). I
think the H3100 uses KM416S4030C. 100MHz parts, vendor qualified to
103MHz, last I checked.

This is the Samsung part number we recommended for do-it-yourself DRAM
upgrades last year.
  K4S561632B-TC1H000 (or the 133MHz version).
I have not checked what Compaq or pce2000 are using for 64MB dram
configurations, but that part number is a good bet.

We also need to gather part numbers from the 128MB and 256MB ipaq
configurations from www.pce2000.com.

Jamey
Received on Wed Jan 9 05:30:09 2002

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