Table of Contents
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Contents
Using Multiplier Integer and Fractional Formats .................... 2-17
Rounding Multiplier Results ................................................. 2-19
Unbiased Rounding .......................................................... 2-20
Biased Rounding .............................................................. 2-22
Truncation ....................................................................... 2-23
Special Rounding Instructions ............................................... 2-24
Using Computational Status ....................................................... 2-24
ASTAT Register .......................................................................... 2-25
Arithmetic Logic Unit (ALU) ...................................................... 2-26
ALU Operations ................................................................... 2-26
Single 16-Bit Operations .................................................. 2-27
Dual 16-Bit Operations .................................................... 2-27
Quad 16-Bit Operations ................................................... 2-28
Single 32-Bit Operations .................................................. 2-29
Dual 32-Bit Operations .................................................... 2-29
ALU Instruction Summary .................................................... 2-30
ALU Division Support Features ............................................. 2-34
Special SIMD Video ALU Operations ................................... 2-35
Multiply Accumulators (Multipliers) ........................................... 2-35
Multiplier Operation ............................................................. 2-36
Accumulator Registers .................................................... 2-37
Rounding or Saturating Multiplier Results ........................ 2-37
Saturating Multiplier Results on Overflow ............................. 2-38
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ADSP-BF53x/BF56x Blackfin Processor Programming Reference
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Table of Contents
