Actel is offering an intellectual property (IP) core generator that produces optimised fast Fourier transform (FFT) cores for use with Actel's flash- and antifuse-based FPGA families. CoreFFT is designed for high-reliability applications requiring resistance to high temperature, firm-error immunity and radiation tolerance. It produces FPGA-optimised modules that perform FFTs to convert a signal from the time domain to the frequency domain in order to show the spectral content of the signal.
The CoreFFT RTL generator produces modules that can compute 256-, 512- or 1024-point complex forward or inverse decimation-in-time (DIT) FFTs. The core's DIT Radix-2 implementation has been optimised for Actel devices. The module's input and output data is represented as 32-bit words comprised of 16-bit real and imaginary parts. A dual-input buffer and a single-output buffer support the input of new data samples with FFT computation, as well as the resulting output simultaneously. In addition, CoreFFT contains all the necessary memory buffers, butterfly and control logic, as well as phase factors for the target applications.
CoreFFT has been optimised for Actel's Axcelerator, RTAX-S, ProASIC Plus and ProASIC3 FPGAs. A free evaluation version is available for download at www.actel.com/products/ip.
Actel offers its own system-level IP solutions, called DirectCores, specifically designed and optimised for use with Actel devices. It also offers third-party IP blocks, called CompanionCores, which have been tested and verified in Actel FPGAs. The cores cover applications ranging from embedded systems to consumer and communications.
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