FPGAs as DSPs deliver efficiency and

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Message: FPGAs as DSPs deliver efficiency and generality

Post time: Mar 26, 2008 2:00 PM

Author: EETA Editorial
Level: Interns
Points: 231

"They were convinced that FPGAs couldn't be more efficient than DSPs. After all, they said, to provide reconfigurability, FPGAs spend transistors extravagantly. Implementing a simple logic function (like a two-input NAND) on an FPGA requires a lot more transistors than are used to provide the same function in a processor's arithmetic logic unit.
They have a point, but efficiency comes in many flavors.
An FPGA, in contrast, can use much more of its silicon area for computations. Now, if you run a demanding, highly parallel DSP algorithm on a typical DSP, you'll see that only small portions of the silicon are consistently active. On the other hand, an FPGA running the same application will use lots of its resources, most of the time. So which is more efficient? "http://www.eetasia.com/ART_8800497803_499485_NT_1385d541.HTM
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