SMJ320C80 Datasheet, PDF (35/157 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSOR

SMJ320C80
DIGITAL SIGNAL PROCESSOR
SGUS025B – AUGUST 1998 – REVISED JUNE 2002
PP architecture
The parallel processor (PP) is a 32-bit integer DSP optimized for imaging and graphics applications. Each PP
can execute in parallel: a multiply, ALU operation, and two memory accesses within a single instruction. This
internal parallelism allows a single PP to achieve over 500 million operations per second for certain algorithms.
The PP has a three-input ALU that supports all 256 three input Boolean combinations and many combinations
of arithmetic and Boolean functions. Data-merging and bit-to-byte, bit-to-word, and bit-to-halfword translations
are supported by hardware in the input data path to the ALU. Typical tasks performed by a PP include:
D Pixel-intensive processing
– Motion estimation
– Convolution
– PixBLTs
– Warp
– Histogram
– Mean square error
D Domain transforms
– Discrete Cosine Transform (DCT)
– Fast Fourier Transform (FFT)
– Hough
D Core graphics functions
– Line
– Circle
– Shaded fills
– Fonts
D Image analysis
– Segmentation
– Feature extraction
D Bit-stream encoding/decoding
– Data merging
– Table look-ups
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