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Difference between DSP and GPP

written 6.0 years ago by teamques10 ★ 68k

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microcontroller and embedded programming

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written 6.0 years ago by teamques10 ★ 68k

DSP	GPP
Perform data access and MAC in single instruction cycle	Often require separate data access, multiply and accumulate instructions
Simultaneous multiple data access per cycle	Single data access per cycle
Specialized addressing (auto increment and decrement, circular buffer, bit reversal)	General purpose addressing, only auto increment/decrement
Large (64-bit)accumulators	Max 32-bit data types
Zero-overhead HW looping	SW looping
VLIW or SIMD operations	Superscalar operations
Saturation and rounding supported seamlessly in HW and tools	Limited or partial saturation and rounding support, requiring explicit programming

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