OPENCORES.ORG

This BSD page has some good information on the standard UART register

most of the uarts on opencores come with tons of features hat you love 
if you got a cpu connected,
if you just need a single baud-rate no fifo features no handshakes (or 
only cts/dts) you are better of looking at
something as simple as http://direct.xilinx.com/bvdocs/appnotes/xapp341.pdf
that gets communication up and running in a couple of hours.

thilo

Guy Hutchison wrote:
> This BSD page has some good information on the standard UART register 
> set.  In general your FPGA will need to have either a small 
> microprocessor or a state machine to program the initial parameters 
> into the UART and then push data into and out of it.
>
> Link:
> http://www.freebsd.org/doc/en_US.ISO8859-1/articles/serial-uart/article.html
>
> - Guy
>
> On 3/9/07, *manuel.kampert@o... 
> <mailto:manuel.kampert@o...>* <manuel.kampert@o... 
> <mailto:manuel.kampert@o...>> wrote:
>
>     The core that i've used was
>
>     http://www.opencores.org/pdownloads.cgi/list/a_vhd_16550_uart
>
>     Unfortunately it did not contain any testbench.
>
>
>
>     ----- Original Message -----
>     From: Günter Dannoritzer<dannoritzer@w...>
>     To:
>     Date: Fri Mar  9 14:00:39 CET 2007
>     Subject: [oc] Serial / UART link to host
>
>     > manuel.kampert at online.de <http://online.de> wrote:
>     > > Hello!
>     > [...]
>     > > I choosed the VHDL USART circuit from this forum and read the
>     > > documentation. I was quite impressed about the complexity of
>     > this
>     > > module and was unable to figure out how to just send some
>     > single bytes
>     > > to my machine.
>     > >
>     > Maybe I overlooked one, but do you mean the
>     > Serial UART
>     >  http://www.opencores.org/projects.cgi/web/uart
>     <http://www.opencores.org/projects.cgi/web/uart>
>     > or the
>     > UART 16550
>     >  http://www.opencores.org/projects.cgi/web/uart16550
>     > The first one has a VHDL testbench, the later one only a Verilog
>     > one. If
>     > there is nothing in the documentation, the test bench might be the
>     > best
>     > place to look how they feed data into the core.
>     > Cheers,
>     > Guenter
>     > > Does someone have some lines of code that would give me a
>     > start to
>     > > initialize this circuit?
>     > >
>     > > Many Thanks,
>     > > Manue.
>     > > _______________________________________________
>     > > http://www.opencores.org/mailman/listinfo/cores
>     > >
>     >
>     >
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