68300

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

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@...]
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 



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[Non-text portions of this message have been removed]

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	
> 
> ADVERTISEMENT
> 
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>  
<http://us.adserver.yahoo.com/l?M=245454.3115308.4434529.1728375/D=egroupmail/S=:HM/A=1457554/rand=789845105>
	
> 
> ---------------------------------------------------
> To unsubscribe from this group, send an email to:
> 68300-unsubscribe@yahoogroups.com
> 
> To learn more about Motorola Microcontrollers, please visit
> http://www.motorola.com/mcu <http://www.motorola.com/mcu> 
> 
> 
> 
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
<http://docs.yahoo.com/info/terms/> . 

> 
> 
> 
> 
> [Non-text portions of this message have been removed]

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@...> 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
>
> ADVERTISEMENT
>
<
http://rd.yahoo.com/M=245454.3115308.4434529.1728375/D=egroupweb/S=1706554205:HM/A=1457554/R=0/*http://ipunda.com/clk/beibunmaisuiyuiwabei
>

>
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http://us.adserver.yahoo.com/l?M=245454.3115308.4434529.1728375/D=egroupmail/S
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>
> ---------------------------------------------------
> To unsubscribe from this group, send an email to:
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>
> To learn more about Motorola Microcontrollers, please visit
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>
>
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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
> >
> > ADVERTISEMENT
> >
> <
>
http://rd.yahoo.com/M=245454.3115308.4434529.1728375/D=egroupweb/S=1706554205:HM/A=1457554/R=0/*http://ipunda.com/clk/beibunmaisuiyuiwabei
> >
> 
> >
> <
>
http://us.adserver.yahoo.com/l?M=245454.3115308.4434529.1728375/D=egroupmail/S
> =:HM/A=1457554/rand=789845105
> >
> 
> >
> > ---------------------------------------------------
> > To unsubscribe from this group, send an email to:
> > 68300-unsubscribe@yahoogroups.com
> >
> > To learn more about Motorola Microcontrollers, please visit
> > http://www.motorola.com/mcu <http://www.motorola.com/mcu>
> >
> >
> >
> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
> <http://docs.yahoo.com/info/terms/> .
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> 
> 
> 
> ---------------------------------------------------
> To unsubscribe from this group, send an email to:
> 68300-unsubscribe@yahoogroups.com
> 
> To learn more about Motorola Microcontrollers, please visit
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> 
> 
> 
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/

Shyam,

The 68360 is listed as a production part and has a DRAM interface.  It also 
has a full 32-bit address, if you find that a mere 24 bits cramps your style.

Several years ago, I brought up an Atlas eval board. It only took me a few 
days to get the software setup right.

    Steve


At 07:22 AM 4/8/2003, shyam_mali wrote:
>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
> >
> > ADVERTISEMENT
> >
><<http://rd.yahoo.com/M=245454.3115308.4434529.1728375/D=egroupweb/S=1706554205:HM/A=1457554/R=0/*http://ipunda.com/clk/beibunmaisuiyuiwabei>http://rd.yahoo.com/M=245454.3115308.4434529.1728375/D=egroupweb/S=1706554205:HM/A=1457554/R=0/*http://ipunda.com/clk/beibunmaisuiyuiwabei>
>
> >
><http://us.adserver.yahoo.com/l?M=245454.3115308.4434529.1728375/D=egroupmail/S=:HM/A=1457554/rand=789845105>
>
> >
> > ---------------------------------------------------
> > To unsubscribe from this group, send an email to:
> > 68300-unsubscribe@yahoogroups.com
> >
> > To learn more about Motorola Microcontrollers, please visit
> > <http://www.motorola.com/mcu>http://www.motorola.com/mcu 
> <http://www.motorola.com/mcu>
> >
> >
> >
> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
><<http://docs.yahoo.com/info/terms/>http://docs.yahoo.com/info/terms/> .
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
>
>
>Yahoo! Groups Sponsor
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>1c049e.jpg
>
>---------------------------------------------------
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>
>
>
>Your use of Yahoo! Groups is subject to the 
><http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.


*************************************************************************
Steve Russell                                     mailto:stever@...
Senior Software Design Engineer                      http://www.nohau.com
Nohau Corporation                                    phone: (408)866-1820
51 East Campbell Avenue                                fax: (408)378-7869
Campbell, CA 95008
*************************************************************************

[Non-text portions of this message have been removed]

At 06:27 PM 4/8/2003 +0000, you wrote:
>  The need for
>interfacing large chunks of memory to use the full features of
>microcontrollers like the 332 is apparent and universal.
>
>Shyam

Outside of the embedded systems world, I don't think that people would 
consider the 332 able to address "large chunks of memory". By using SRAM 
and the built in chip select system, the 332 can get at 11 whole megabytes 
of memory, one megabyte being the boot ROM. On the bus with a bunch of 
glue...16 megabytes minus the stuff up at the top and minus the boot ROM.

I don't think that you could find a 16MB SDRAM stick if you tried.

If you need large Flash, try a Disk-On-Chip.

If you need large memory plus the TPU, an MPC565 would probably be better.

Andrei

-------
Andrei Chichak               #200 10835-120 Street
Senior Software Developer    Edmonton, Alberta
Pulmonox Medical Inc.        Canada
                              T5H 3P9
                              (W) (780) 451-3660
                              (F) (780) 452-0169

Lat: 53° 33' 13.548" N
Lon: 113° 31' 43.164" W

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
> >
> > ADVERTISEMENT
> >
> <
>
http://rd.yahoo.com/M=245454.3115308.4434529.1728375/D=egroupweb/S=1706554205:HM/A=1457554/R=0/*http://ipunda.com/clk/beibunmaisuiyuiwabei

> >
>
> >
> <
>
http://us.adserver.yahoo.com/l?M=245454.3115308.4434529.1728375/D=egroupmail/S

> =:HM/A=1457554/rand=789845105
> >
>
> >
> > ---------------------------------------------------
> > To unsubscribe from this group, send an email to:
> > 68300-unsubscribe@yahoogroups.com
> >
> > To learn more about Motorola Microcontrollers, please visit
> > http://www.motorola.com/mcu <http://www.motorola.com/mcu>
> >
> >
> >
> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
> <http://docs.yahoo.com/info/terms/> .
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
>
>
>
> ---------------------------------------------------
> To unsubscribe from this group, send an email to:
> 68300-unsubscribe@yahoogroups.com
>
> To learn more about Motorola Microcontrollers, please visit
> http://www.motorola.com/mcu
>
>
>
> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/



---------------------------------------------------
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To learn more about Motorola Microcontrollers, please visit
http://www.motorola.com/mcu



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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
> >
> > ADVERTISEMENT
> >
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--- In 68300@yahoogroups.com, shyam mali <shyam_mali@y...> wrote:
> 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.


...if you are not in absolute need of the TPU (assuming this is what 
brought you to the '332 in the first place), you should have a look 
at a different family of Motorola processors/controllers: the 
ColdFire. There are devices with DRAM (MCF5206e) and SDRAM interface 
(MCF5307,5407,5272,5282,...). And if you are familiar with 68K you'll 
find the ColdFire very easy.

Stefan