[En-Nut-Discussion] Re: [En-Nut-Announce] Version 3.4.2 Available

Rick Collins ethernut at arius.com
Tue Mar 9 13:53:06 CET 2004


At 07:41 AM 3/9/2004, you wrote:
>The reason I suggested the Philips chip is exactly because it doesn't
>have any external buses, and are suited for small embedded systems.
>That's where I think Nut** fits in perfectly.
>
>I know the OKI chips, and there are many others, but most of these
>have the option of megabytes of Flash and RAM and are probably
>more suited for running Linux (as you suggest yourself).


Maybe I am missing something.  How would you connect the LPC210x chip to a 
10/100 Ethernet MAC if it has no external data bus?  Wouldn't you need to 
use something slow like a UART or SPI?  How would you adapt the parallel 
interface of most MAC chips to a serial interface?  Or would you bang a set 
of IO pins to emulate a parallel bus?

I guess if you want the smallest possible package, the LPC210x chips are 
clearly better.  I guess you don't always need the full bandwidth of a 
10/100 interface.


Rick Collins



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