[USRP-users] N200 clock ref info on application notes page

Marcus D. Leech mleech at ripnet.com
Fri Apr 12 13:12:11 EDT 2013

> What revision receiver Do you have?  I also have this weird thing 
> going on with the first receiver we bought from Ettus where it says it 
> is revision 2 on the back.  The computer picks it up as revision 3 and 
> revision 3 firmware works fine on it.
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> USRP-users at lists.ettus.com
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 From the perspective of the firmware/FPGA code, Rev3/Rev2 are identical.

Rev4 changed some minor things, most notably the digital outputs from 
the ADC are carried differentially in Rev4, rather than CMOS single 
ended.  That
   requires that the FPGA "understand" that, so there are different FPGA 
images for Rev2/3 and Rev4 hardware.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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