August 10, 2011 -- In an FPGA design, a reset acts as a synchronization signal that sets all the storage elements to a known state. In a digital design, designers normally implement a global reset as an external pin to initialize the design on power-up. The global reset pin is similar to any other input pin and is often applied asynchronously to the FPGA. Designers can then choose to use this signal to reset their design asynchronously or synchronously inside the FPGA.
But with the help of a few hints and tips, designers will find ways to choose a more suitable reset structure. An optimal reset structure will enhance device utilization, timing and power consumption in an FPGA.
By Srikanth Erusalagandi. (Erusalagandi is currently working as a solutions development engineer on Xilinx, Inc.'s Global Training Solutions team.)
This brief introduction has been excerpted from the original copyrighted article.