Re: [Discuss-gnuradio] USRP FPGA

[Eric Blossom]

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