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Re: [linrad] PC soundcard alternatives
Insight/Memec manufacture demo boards for the Xilinx FPGAs,
also with PCI bus. For this they also produce a 2x12bit 50MHz
A/D board that fits it piggyback.
With the hardware comes also the 'IP core' for PCI and probably
for the A/D board.
Otherwise there is free open IP for the PCI bus and other at
I plan to learn VHDL and FPGA and one day do this myself, but
probably FPGAs will be obsolete before I do :-)
On Monday 08 December 2003 21:03, Chris Albertson wrote:
> Possably the simplest, most general way to interface to a
> ADC and get the data into a PC is to design one of these
> "SOC" (System On a Chip) into your system.
> The ADC can connect to the SOC using a fast parallel
> interface and the Linux software can then put the
> data out over the built-in Ethernet interface.
> You could stream the data over a UDP port.
> Basically what you do is "end run" the problem of getting
> the data into a PC by first getting it into another
> smaller computer that can talk on the net.
> Some of these SOC Linux systems are very interresting. I've
> seen one built on a SIMM form factor. The whole system,
> CPU, RAM, Ethernet, Serial ports and all was on a little
> SIMM strip. The intended market is to allow people
> whole build printers or copy machine to include a WWW
> interface for cheap.
> --- Le
> > 4) Yes. How to move the digital data stream into Linux is something
> > I know nothing about. Look for something that can handle a high data
> > rate. One receive channel will need 40 bits per data pair at sampling
> > rates below 100 kHz or so. The day I can have a board like this I
> > will
> > want the largest possible bandwidth up to about 1 MHz. That might
> > call
> > for 32 bits per complex data point so the need could be up to 50
> > megabit
> > per second. And I absolutely need 2 receive channels minimum!!!
> Chris Albertson
> Home: 310-376-1029 chrisalbertson90278@xxxxxxxxx
> Cell: 310-990-7550
> Office: 310-336-5189 Christopher.J.Albertson@xxxxxxxx
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