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FEATURES

Digital Signal Processing Core

? Efficient, object code compatible, 24-bit 56000 family DSP engine

? Up to 16.5 Million Instructions Per Second (MIPS)—60.6 ns instruction cycle at 33 MHz

? Up to 99 Million Operations Per Second (MOPS) at 33 MHz

? Executes a 1024-point complex Fast Fourier Transform (FFT) in 59,898 clocks

? Highly parallel instruction set with unique DSP addressing modes

? Two 56-bit accumulators including extension byte

? Parallel 24x24-bit multiply-accumulate in 1 instruction cycle (2 clock cycles)

? Double precision 48x48-bit multiply with 96-bit result in 6 instruction cycles

? 56-bit addition/subtraction in 1 instruction cycle

? Fractional arithmetic with support for multiprecision arithmetic

? Hardware support for block-floating point FFT

? Hardware nested DO loops

? Zero-overhead fast interrupts (2 instruction cycles)

? Four 24-bit internal data buses and three 16-bit internal address buses for maximum

information transfer on-chip

Memory

? On-chip modified Harvard architecture permitting simultaneous accesses to program

and two data memories

? 512x24-bit on-chip Program RAM and 64x24-bit bootstrap ROM

? Two 256x24-bit on-chip data RAMs

? Two 256x24-bit on-chip data ROMs containing sine, A-law and

u-law tables

? External memory expansion with 16-bit address and 24-bit data buses

? Bootstrap loading from external data bus or Host Interface