Xilinx Virtex-6 FPGA User Manual
Also see for Virtex-6 FPGA: User guideUser guideGuideHardware setup guideUser guide
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60 www.xilinx.com Virtex-6 FPGA System MonitorUG370 (v1.1) June 14, 2010Application GuidelinesChipScope Pro Tool and System MonitorA useful feature of the Virtex-6 FPGA System Monitor is the ability to access themeasurement information via the JTAG TAP at any time—even before the FPGA isconfigured. Most PC boards have an existing JTAG infrastructure that is used fordebugging and testing the hardware. With the addition of System Monitor to the JTAGchain, analog information can now be extracted using Xilinx or third-party JTAG tools.Hardware designers and test engineers can use the JTAG access to monitor on-chiptemperatures and supply conditions during development or during qualification of adesign. External analog sensors on the PC board (current, voltage, and temperature) canalso be monitored through JTAG by using the System Monitor external analog inputchannels (Figure 33). The JTAG interface is fully IEEE 1149.1 compliant and is documentedin DRP JTAG Interface, page 21.The easiest way to access this information through JTAG is to use the ChipScope™ Protool, version 8.2.04 and later. This tool automatically detects the presence of SystemMonitor on the JTAG chain and allow users to display the measurement data. There is alsoa data logging function that allows users to record sensor readings along with time stampinformation in a log file for analysis. Users can also configure the System Monitoroperation via JTAG using the ChipScope Pro tool by writing to the control registers.Figure 34 shows a screen capture of the System Monitor measurements as displayed by theChipScope Pro tool. For more information, see the ChipScope Pro documentation athttp://www.xilinx.com/chipscope. The easiest way to try out the System Monitorfoundationally described in this section and the ChipScope Pro interface is by using theML605 demonstration board. Both on-chip and external senors are support on this board.The external sensors are used to implement current and power monitoring functions.X-Ref Target - Figure 33Figure 33: Analog Debug using JTAG TAPVirtex-6 FPGAV CCINT1.0V5 mΩ+ –V AUXN[0]TCLKTMSTDOTDIVAUXP [0] ChipScope ProDebug ToolMonitor voltage,temperature, currentthrough the JTAG TAP.UG370_33_060809Use an external shuntto monitor current (Power).Auxiliary analog inputused to monitor current.www.BDTIC.com/XILINX |
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