Re: [Discuss-gnuradio] Interested in joining the hardware project

[Arrigo Benedetti]

Hermann Gausterer wrote:

> On Sat, Mar 15, 2003 at 01:19:05PM -0800, Arrigo Benedetti wrote:
>  
>
> > I have been reading messages on the list for a few days, and I am very 
> > interested in contributing to the hardware project.
> > I have several of experience in (Xilinx) FPGA and board design, and have 
> > access to FPGA design tools.
> >    
>
> hi, nice to meet an real "hardwarehacker" ;-)
>
> how difficult is it to produce a pci-card with such an
> xilinx ic, is there an additional pci-interface (2nd IC) needed?
>  
The PCI interface can be inside the FPGA. Xilinx sells a (very 
expensive) PCI core. Another option is the open source PCI core offered 
by opencores.org (they also offer an I2C core). This core seems very 
interesting since it has a more complete backend than the core sold by 
Xilinx. Some colleagues of mine have used the Xilinx PCI core, and they 
have spent several weeks to debug it and get it to work. If the aim of 
this project is to get to a working board as quickly as possible, then 
using another IC for the PCI interface may be a good idea. PLX is a 
company that makes these chips:

http://www.plxtech.com/products/9030/default.htm

I've read in previous posting someone suggesting that this board would 
have a USB interface instead of PCI.
opencores.org has an USB2 (480 Mb/s) core. What sampling frequency are 
you targeting?

-Arrigo


> have you ever done that?
>
> what we need is a cheap A/D (or a lot of them) an I2C interface
> (for a tuner) and all remaining IOs configured als GPIOs :-))
>
> hermann
>
>
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