68300

Jeff,
I got the message, synchronus ram is not the solution
for the 332, i will try some other data storage flash
disk etc. In my case the power is not of much concern
as compared to the cost.
I appreciate the prompt response/criticism i received
from you all.
Thanks
Shyam


 --- jeffrey.tenney@... wrote: 
---------------------------------

Shyam,

Yes, it looks pretty complex.  The solution appears to
include a big CPLD,
the level conversion buffers, and the SDRAM clock. 
Apparently the CPLD
does the sync-async interface as well as the refresh
logic.

You might have picked the wrong microcontroller
series.  Can you give us
more information on what you want?  TPU?  More than 16
MB?  Only SDRAM?

Jeff





"shyam_mali" <shyam_mali@...> on 04/08/2003
11:27:12 AM

Please respond to 68300@yahoogroups.com

To:    68300@yahoogroups.com
cc:
Subject:    [68300] Re: 68332-SDRAM interface


Hi Jeff,

Can you comment on this design, I happened to see this
site after i
read your message.
http://www.users.qwest.net/~kmaxon/page/cont/cont47.htm
. The need for
interfacing large chunks of memory to use the full
features of
microcontrollers like the 332 is apparent and
universal.

Shyam












--- In 68300@yahoogroups.com, jeffrey.tenney@g...
wrote:
>
> Shyam,
>
> I don't think you'll get many responses on using
SDRAM with a 68xxx.
 These
> processors have asynchronous external buses.  The
conversion
hardware and
> logic would be complex.
>
> Jeff
>
>
>
>
>
> "shyam_mali" <shyam_mali@y...> on 04/08/2003
07:22:33 AM
>
> Please respond to 68300@yahoogroups.com
>
> To:    68300@yahoogroups.com
> cc:
> Subject:    [68300] Re: 68332-SDRAM interface
>
>
> Charles,
> Yes, I am looking for advise on the feasibility and
information of
> interfacing the DIMM modules used in the PC. Kindly
advise.
> Shyam
>
>
>
>
>
>
>
> --- In 68300@yahoogroups.com, Melear Charles-rdph40
> <charles.melear@m...> wrote:
> > Shyam,
> >
> > Do you mean that you want to put Synchronous DRAM,
like the kind
> used in PC's and stuff?
> >
> > The MC68332 was not particularly designed to deal
with DRAM.
> >
> > Before we start walking down this road, I wanted
to make sure that
> you are talking about DRAM that plugs into the
motherboards of PC's.
> >
> > Regards,
> >
> > Charlie
> >
> > -----Original Message-----
> > From: shyam_mali [mailto:shyam_mali@y...]
> > Sent: Monday, April 07, 2003 8:57 PM
> > To: 68300@yahoogroups.com
> > Subject: [68300] 68332-SDRAM interface
> >
> >
> > Hi Charles, Robert
> >
> > Thanks for the assurance, i am keen on starting
this project.
> > To start with the 332, i feel that it might be
very helpful to have
> > an off-the-shelf 168-pin SDRAM module interface as
a building block
> > for future applications.
> > I will appreciate suggestions regarding this
interface... has anyone
> > tried it yet? What is the most logical way to go
about achieving the
> > requirement? Are there any latches/buffers that
support level
> > shifing? i will need these anyways to interface
with the 64-bit wide
> > bus from the DIMM modules.
> >
> > Shyam
> >
> >
> >
> > Yahoo! Groups Sponsor
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