PC-based DSP board runs at 75 MFLOPS
The Gamma-20/25 PC-based DSP board Running at 25 MHz,reaches a
performance level of up to 75 MFLOPS. The board uses the Analog Devices
ADSP-21020 floating-point Harvard-architecture processor, which can
perform a 1-Kpoint complex FFT in 0.77 ms or a 32-tap FIR in 1.48
microsecond. Program and data memory options include zero-wait-state SRAM
(either 32 or 128 Kwords deep); 4 or 16 Mbytes of one-wait-state data DRAM
can be added. An on-board DMA controller allows the board to communicate
across the DT-Connect interface; a serial interface accepts analog
input/output modules onto a single-slot mezzanine connector. The mezzanine
format is compatible with CAC version 2 and 3 boards. The host interface
includes interrupts in both directions and high-speed transfers between
the host and all DSP memory. Host interface software is included (with
source code in C). DspHost software is also included to enhance the C
compiler. (352 Kbytes SRAM, $3,995–stock to 3 weeks.) BittWare Research
Systems, Inc. Baltimore, MD Jim Bittman 800-848-0435 Fax 410-838-3204
Advertisement
