[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [linrad] PC soundcard alternatives

Hello,

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
www.opencores.org.

I plan to learn VHDL and FPGA and one day do this myself, but
probably FPGAs will be obsolete before I do :-)

Marko Cebokli
 
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.
>
> http://www.linuxdevices.com/files/misc/soc-table.jpg
>
> 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
>   KG6OMK
>
> __________________________________
> Do you Yahoo!?
> New Yahoo! Photos - easier uploading and sharing.
> http://photos.yahoo.com/
LINRADDARNIL
r