Lpc2000

One thing that come into my mind when hearing some of you suggest using an
FPGA to do some kind of serial to parallel interface is "Are you mad!?"

If the processor doesn't have a parallel interface don't spend time and
effort making it, Upgrade to a processor that has! You will never get speeds
anywhere near that or at the same price anyway...

Just my two cents...

Regards
Lasse Madsen


-----Original Message-----
From: Rick Collins [mailto:gnuarm@...] 
Sent: 26. januar 2005 19:09
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: LPC213x And Ethernet



--- In lpc2000@yahoogroups.com, "dsidlauskas1" <dsidlauskas@w...>
wrote:
> 
> I have a project where the LPC312x fits very well accept that
there's
> a requirement for ehternet connectivity. I'd appreciate any
> suggestions as to how this might be accomplished cheaply and simply.

I am looking at doing something very similar with the AT91SAM7S chips.
 Like the LPC312x parts, there is no external data bus.  I think this
is the biggest issue.  It means you will either need to add a serial
to parallel interface chip of some sort (possibly an FPGA) or you will
have to bit bang the bit IO ports to talk to the Ethernet chip.  

The more I think about this, the more I like using an FPGA to provide
a fast serial port to the ARM chip and a parallel port to a LAN91C111
chip.  I am discussing this in the AT91SAM7 group.  I expect most of
this discussion will be applicable to the LPC21xx chips too.   

http://groups.yahoo.com/group/AT91SAM7/





 
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