development and evaluation for FPGA based systems


Posted on Feb 6, 2014

With regard to the System Monitor feature presented in this article, Avalon Microelectronics used this feature in two Virtex-5 FPGAs (XC5VLX330T) in their development with great success. They had an unusual problem on their development board, which shut down when the FPGAs were performing certain functions. Their power management so


development and evaluation for FPGA based systems
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ftware caused the board to turn off due to certain power threshold violations. Using the Virtex-5 FPGA System Monitor, they were able to dynamically view where these violations were occurring and quickly find a solution. The issue turned out to be a simple miscalculation of a resistor value by their board vendor for one of the voltage regulators providing power to the FPGA. They reduced our debug time by taking advantage of the built-in tools, without the use of expensive debugging equipment. Power consumption in electronic devices and the design of power systems is an increasingly complex task. Static current levels coupled with increased dynamic current demands imply greater IR drops in power distribution systems. Operating temperature requirements require sophisticated heat sink and airflow measurements. The Virtex-5 FPGA System Monitor features on-die temperature and voltage measurement capabilities that provide valuable information for the development, evaluation, debugging, optimization, and qualification of PCB power designs. This article explains how to configure System Monitor`s external channels for power monitoring and provides PCB implementation recommendations/guidelines. The Virtex-5 FPGA System Monitor has, as its core, a 200 kilo-Samples-Per-Second (kSPS) Analog-to-Digital Converter (ADC). Fig 1 shows a block diagram of the System Monitor. The System Monitor allows unprecedented and convenient access to...




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