Which device for CAN gateway?

Started by lpc2100_fan January 3, 2006
Brian,
I took your post and gave it the correct subject, you get a better
chance of answers this way.

I can only comment on the Philips LPC2294 and LPC2194, both with 4 CAN
channels. Have a close look at the CAN Erratas (not fixed but Philips
promised to have fixed devices out in Q2/06). The Erratas are not too
much related to a gateway application more to a simple full-CAN usage.
The filtering options and cross communications between CAN channels is
superior in the Philips implementation, nevertheless, I agree that the
Erratas should be fixed.
Also, the Philips device runs the fastest from Flash as far as I know.

Bob

-----------------------

Brian K. wrote:

Hello all!,

I am starting a project that is basically a CAN bus router/gateway. I
was looking at ARM MCUs that have 3-4 CAN channels on them. Here is the
list/questions right now:

Freescale MAC71xx MCUs - 4 CAN bus channels - Anyone used this part
before?? Any pitfalls????
Philips LPC21xx MCUs - 4 CAN bus channels - Has Philips fixed the
CAN issues explained in the errata on the current mask sets????
TI TMS470xxx MCUs - 3 CAN bus channels - Anyone used this part
before?? Any pitfalls????

I guess I could go with multiple single/dual channel parts and communicate
to a "Master" MCU for arbitration/routing of the CAN bus messages.

Thanks,

Brian K. Mohlman
Project Engineer (Electrical)
Advanced Concepts Design Engineering
JLG Industries Inc.
1 JLG Drive
McConnellsburg, PA 17233
Ph. (717) 485-6495
mailto:bkmohlman@bkmo...
http://www.jlg.com
http://www.gradall.com

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An Engineer's Guide to the LPC2100 Series

lpc2100_fan wrote:

> Brian,
> I took your post and gave it the correct subject, you get a better
> chance of answers this way.
>
> I can only comment on the Philips LPC2294 and LPC2194, both with 4 CAN
> channels. Have a close look at the CAN Erratas (not fixed but Philips
> promised to have fixed devices out in Q2/06). The Erratas are not too
> much related to a gateway application more to a simple full-CAN usage.
> The filtering options and cross communications between CAN channels is
> superior in the Philips implementation, nevertheless, I agree that the
> Erratas should be fixed.
> Also, the Philips device runs the fastest from Flash as far as I know.
>
> Bob
>
Another possibility to solve this is to use the Microchip MCP2515. It's
using SPI so it would be easy to add channels to your gateway.

Cheers
/Ake

--
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Ake Hedman (YAP - Yet Another Programmer)
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