Virtex-5 FPGA System Monitor User Guide
Every member of the Virtex®-5 FPGA family contains a single System Monitor, which is located in the center of every die. The System Monitor function is built around a 10-bit, 200-kSPS (kilosamples per second) Analog-to-Digital Converter (ADC). When combined with a number of on-chip sensors, the ADC is used to measure FPGA physical operating parameters like on-chip power supply voltages and die temperatures. Access to external voltages is provided through a dedicated analog-input pair (VP/VN) and 16 user-selectable analog inputs, known as auxiliary analog inputs (V AUXP [15:0], V AUXN [15:0]). The external analog inputs allow the ADC to monitor the physical environment of the board or enclosure. System Monitor is fully functional on power up, and measurement data can be accessed via the JTAG port pre-configuration.
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