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Re: [Discuss-gnuradio] Finding the USRP2's CPLD source code

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Finding the USRP2's CPLD source code
Date: Fri, 26 Mar 2010 10:41:04 -0700
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On 03/25/2010 04:20 AM, G Wildebeest wrote:
Hi all,

I'm poking around the USRP2's CPLD, the XC9572, mainly just to
understand exactly how the U2 boots, and so looking for the Verilog
source code that goes into the CPLD.  I find
usrp2/fpga/boot_cpld/boot_cpld.v, but this file has a comment that it is
"only for u2_rev2," and I'm using u2_rev3 like most others.

This comment is old, and it meant "not for the rev 1". So it works with the rev2 (which was never sold) and the rev 3 and rev 4. boot_cpld.v is the top level file, and it includes some of the files from opencores/spi_boot

usrp2/fpga/models/cpld_model.v looks promising too; any hints?

That is a file used to model the CPLD in order to do simulations of the FPGA. It is not compiled into the design itself.


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