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From: | Matt Ettus |
Subject: | Re: [Discuss-gnuradio] differences between USRP2 rev 3 and rev 4 boards |
Date: | Tue, 12 Oct 2010 15:16:23 -0700 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Lightning/1.0b2pre Thunderbird/3.0.7 |
On 10/12/2010 02:22 PM, Steve Mcmahon wrote:
I am wondering what are the differences between the USRP2 rev 3 board and the rev 4 board? I have one of each (one I ordered maybe a year ago and one I ordered this past summer), and I don't see any differences on the board itself. I understand that the versions of the FPGA image and the firmware that shipped on the SD card from the factory would be different, since over a year of time elapsed between my purchasing the two boards. But what else is different? I can't find a changelog for the USRP2 boards anywhere.
Some clocks were reorganized for layout reasons and the PPS input circuit was modified to have a more consistent delay. The same FPGA image works for both.
Matt
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