D950-CORE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

D950-CORE

16-Bit Fixed Point Digital Signal Processor (DSP) Core

STMicroelectronics 

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D950-Core

5.4 Instruction set

The D950-Core instruction set is divided into different groups, according to operation type.

• Assignment

• ALU

• Bit Manipulation

• Program control

• Loop control

• Co-processor

• Stack.

Inside this instruction set, following notations are used:

• reg: D950-Core internal register

• AX (resp. AY): address pointer for X (resp. Y) memory space

• IX (resp. IY): index pointer for X (resp. Y) memory space

• L: input left register of DCU (L1 16-MSBs / L0 16-LSBs)

• R: input right register of DCU (R1 16-MSBs / R0 16 LSBs)

• A: 40-bit accumulator (A0 or A1)

• AiH: 16-MSB of the Ai accumulator

• P: Product result of the multiplier

• i,j,k,m,n,p,q,x,y: 0 or 1

• r,: 0,1,2 or 3

• xx: 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14 or 15

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