ARM9 (LPC3000)

Started by dpbevin2k March 21, 2007
Does anyone know when (or if) the LPC3000 range will be extended to
include a processor with Ethernet support?

I have an application where the LPC3180 would be ideal if it had
built-in ethernet. It's a very cost-sensitive project so I can't
justify an off-chip ethernet option. I may have to resort to another
manufacturer (much to my annoyance).

Any clues???

Regards,

David

An Engineer's Guide to the LPC2100 Series

--- In l..., "dpbevin2k" wrote:
>
> Does anyone know when (or if) the LPC3000 range will be extended to
> include a processor with Ethernet support?
>
> I have an application where the LPC3180 would be ideal if it had
> built-in ethernet. It's a very cost-sensitive project so I can't
> justify an off-chip ethernet option. I may have to resort to another
> manufacturer (much to my annoyance).
>
> Any clues???
>
> Regards,
>
> David
>

There are some very cost effective MAC/PHY ICs out there - Davicom
DM9000 springs to mind - that aren't much more than a PHY (which you
invariably need with any MCU with onboard MAC). I don't have recent
pricing, but it might be worth your time getting some before you
discount the 3180 completely.
Thanks for the tip Brendan. My other concerns with using an external
Ethernet device are with interrupt loading and external memory accesses
(taken up by accessing the Ethernet chip)... especially in high Ethernet
comms usage applications

.

________________________________

From: l... [mailto:l...] On Behalf
Of Brendan Murphy
Sent: Thursday, 22 March 2007 9:16 AM
To: l...
Subject: [lpc2000] Re: ARM9 (LPC3000)

--- In l... ,
"dpbevin2k" wrote:
>
> Does anyone know when (or if) the LPC3000 range will be extended to
> include a processor with Ethernet support?
>
> I have an application where the LPC3180 would be ideal if it had
> built-in ethernet. It's a very cost-sensitive project so I can't
> justify an off-chip ethernet option. I may have to resort to another
> manufacturer (much to my annoyance).
>
> Any clues???
>
> Regards,
>
> David
>

There are some very cost effective MAC/PHY ICs out there - Davicom
DM9000 springs to mind - that aren't much more than a PHY (which you
invariably need with any MCU with onboard MAC). I don't have recent
pricing, but it might be worth your time getting some before you
discount the 3180 completely.
--- In l..., "David Bevin" wrote:
>
> Thanks for the tip Brendan. My other concerns with using an external
> Ethernet device are with interrupt loading and external memory
accesses
> (taken up by accessing the Ethernet chip)... especially in high
Ethernet
> comms usage applications
>
> .

Point taken, though I'd always try and benchmark first before making
too many assumptions about real-world performance.

I assume you've looked at what Cirrus Logic have in the way of ARM9
with on-board Ethernet?

Having said that, this is all getting a bit off-topic....