Hi =20 We are doing initial testing of a new Virtex-6 based board that we develope= d. We are having problems when trying to access the system monitor informat= ion over JTAG. It is constantly showing a die temperature of -29 degrees, a= nd incorrect voltages for VCCINT, VCCAUX and the VREFP pin on the System Mo= nitor itself. We've verified that the correct voltages are present on all i= nputs on the BGA. =20 We've successfully configured the device over the JTAG chain, thus we don't= think the problem is over there. We get the wrong values before and after = configuration (they stay constant all the time). =20 I've checked the way the connections to the device have been done many time= s, and can't find anything wrong with it. I also asked this question on the= Xilinx community forums and I've uploaded the relevant part of the schemat= ics over there:
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12 years ago