Re: Who is working with the SAM9263?
- From: "rickman" <gnuarm@xxxxxxxxx>
- Date: 29 Mar 2007 05:51:04 -0700
On Mar 29, 1:26 am, "Ulf Samuelsson" <u...@xxxxxxxxxxxxx> wrote:
"rickman" <gnu...@xxxxxxxxx> skrev i meddelandetnews:1175129175.899218.6800@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I am looking at using the SAM9263 and noticed that they use a 16.36766
MHz crystal rather than the 18.432 they use on the SAM7 eval boards.
Anyone know why they picked this value? Do they use this value on the
other SAM92xx eval boards?
In general, what are your experiences with these parts?
It might be related to the undocumented GPS receiver on the chip.
Anything is possible, but the two frequencies are not related by an
integer combination I can find. This seems odd to me since they
specify the frequency so exactly to 7 decimal places. This is about
the limit of what a reasonable crystal can provide.
Some restrictions I have found:
Cannot use SDRAM on EBI1, only on EBI0
or you will lose the Ethernet due to the muxing
PSRAMs are next best alternative, the ST one on the
board appears to be obsolete already , but there is
a replacement from Micron.
I also noticed that the eval boards for the SAM9 devices are around
$1,000 US. I think the only one significantly less is for the SAM9260
which is about $600. Why are they so expensive?
.
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