參數(shù)資料
型號: D950-CORE
廠商: 意法半導(dǎo)體
元件分類: 數(shù)字信號處理
英文描述: 16-Bit Fixed Point Digital Signal Processor DSP Core
中文描述: 16位定點數(shù)字信號處理器DSP核
文件頁數(shù): 45/89頁
文件大?。?/td> 560K
代理商: D950-CORE
45/89
D950-Core
5.4.2 ALU Instructions
One-word Operand (oper_1)
CLR
Clear Accumulator (AiE:AiH:AiL = 0)
CLRH
Clear 24 MSBs of Accumulator (AiE:AiH = 0)
CLRL
Clear 16 LSBs of Accumulator (AiL = 0)
CLRE
Clear 8 Extension bits of Accumulator (AiE = 0)
SET
Set Accumulator (AiE:AiH:AiL = 0xFF FFFF FFFF)
SETH
Set 24 MSBs of Accumulator (AiE:AiH = 0xFF FFFF)
SETL
Set 16 LSBs of Accumulator (AiL = 0xFFFF)
SEXT
Accumulator is sign extended (AiE loaded with 8 times the MSB of AiH:AiL)
ROUND
Rounds the 40-bit accumulator value
Figure 5.5
ALU One-word Operand
Note:
value=1...32 for ASR, value=0...32 for ROL,
value=1...32 for LSR and value=0...31 for ASL
*AXm + IXs= AkH
*AYn + IYr= AkH
Ai = Lj ASR #value
Rj LSR
Aj ROL
P ASL
,
Ai = oper_1 Ai
VR02018D
6
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