DMA rate for the PCI7833R

[IsaacLescano]

I read the datasheet of the PCI-7833R which is the card I am using for my project. And I could not find specifications about the DMA channels, neither how many DMA channels are available neither what is the highest data rate I can send out to the host machine using the DMA channel. Actually, I only found two occurrences of the word "DMA" in the datasheet and they where in the glossary.

[JLS]

Hello,

One place to observe this information is in the LabVIEW project when you add a 7833 target - let me address your questions:

>> how many DMA channels are available

There are 3 DMA channels available - if you add a 7833 target to your My Computer target in a project, you will then be able to add a FIFO.  If you choose one of the DMA options you'll see there are 3 channels available (0, 1, and 2).   Check out the composition screenshot below.

>>what is the highest data rate I can send out to the host machine using the DMA channel

The following document discusses this - I think it has the numbers you're interested in:

DMA Improves LabVIEW FPGA 8.0 Throughput by 20X

I hope this helps!

Best Regards,

JLS

Composition Screenshot:

Message Edited by JLS on 03-22-2007 10:59 AM