[SI-LIST] Re: VHDL UART

  • From: wolfgang.maichen@xxxxxxxxxxxx
  • To: Market News Brioconcept <market-news@xxxxxxxxxxxxxxx>
  • Date: Wed, 7 May 2008 21:37:22 -0700

Xilinx has a CPLD apps note and associated HDL code that implements a 
basic UART. Just look at their CPLD related apps note, it's easy to find. 
From what I remember it did not use anything exotic so you should be able 
to employ that on Virtex 4 without any changes.
Another option would be to use their Picoblaze microcontroller softcore 
(free of charge), there is a UART reference design available for that, 
too. Given the flexibility the microcontroller core gives you I'd actually 
recommend that route. The Picoblaze is very compact so it will only use a 
negligible portion of your Virtex 4. Programming is done in assembly 
language but it's fairly straightforward.

Note, I don't have any affiliation with or business interest in Xilinx, 
just happen to play with some of their devices.

Wolfgang






Market News Brioconcept <market-news@xxxxxxxxxxxxxxx> 
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05/07/2008 08:59 PM

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Subject
[SI-LIST] VHDL UART






Hi,
      I'm looking for a VHDL or Verilog mini uart core for an RS232
application with the Virtex 4 of Xilinx. Somebody know where can I found a
free and functional core ? 

 

Thanks for your help

 

S.

 

 

 



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