AVR-Chat

At 09:03 PM 3/28/05 +0200, Philipp Adelt wrote:
>Robert Adsett schrieb:
> > It sounds more like an application for a FIFO or a dual port RAM.  FIFO
> > would be better for a buffer type scheme and dual-port for a mailbox type
> > scheme.  Both types would take care of most of your timing issues without
> > much need for additional handshaking.
>
>Interesting, I didn't think about FIFOs before. Are there any readily
>available and affordable parts that inplement a fifo? The 16x5bits of a
>74x225 that I found in a quick search are not deep enough.
>2x FIFO or a mailbox scheme would both be sufficient if something like
>at least 0,5-1Kbytes per direction are available. The more the better,
>of course.

Depends on what affordable means ;).  Those sizes are certainly available 
though.  TI and Cypress and probably others.  Plain SRAM is almost 
certainly cheaper.  It'll be a build vs but decision, how much is your time 
worth and how many are you building?  That will (should) decide things for you.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,   be 
they legal, genetic, or physical.  If you don't believe me, try to chew a 
radio signal. "  -- Kelvin Throop, III
http://www.aeolusdevelopment.com/