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Re: [Discuss-gnuradio] USRP FPGA
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] USRP FPGA |
Date: |
Mon, 22 Nov 2004 19:56:46 -0800 |
User-agent: |
Mutt/1.5.6i |
On Mon, Nov 22, 2004 at 08:53:42PM -0600, David Carr wrote:
> Hey all,
>
> I'm looking for some more information of the FPGA on the USRP. I
> understand the firmware implements 2 up and 2 down converters and some
> general interface functionality.
> I assume these are of the CIC type.
Yes.
> What sort of FPGA resources are required? (How much logic is used in
> the current device?)
About 40% of the logic resources of the current device.
> Also, it appears from the wiki that you're using JHDL to code the
> firmware, is the source available?
It's in Verilog. All the source is in the usrp tarball and in CVS.
You already have it. Look in usrp/fpga/sdr_lib and
usrp/fpga/toplevel/usrp_basic/usrp_basic.v
Eric