dsp56800 Freescale Semiconductor, Inc, dsp56800 Datasheet - Page 325
dsp56800
Manufacturer Part Number
dsp56800
Description
16-bit Digital Signal Controllers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.DSP56800.pdf
(448 pages)
- Current page: 325 of 448
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MAC
Instruction Fields:
Parallel Moves:
Freescale Semiconductor
Operation
MAC
Operation
1.
cle for every addressing mode.
2.
as the destination of the parallel read operation. Memory writes are allowed in this
case.
MAC
Data ALU Operation
This instruction occupies only 1 program word and executes in 1 instruction cy-
The destination of the data ALU operation is not allowed to be the same register
(±)Y1,X0,FDD
(±)Y0,X0,FDD
(±)Y1,Y0,FDD
(±)Y0,Y0,FDD
(±)A1,Y0,FDD
(±)B1,Y1,FDD
1
Operands
(F = A or B)
Operands
Y1,X0,F
Y0,X0,F
Y1,Y0,F
Y0,Y0,F
A1,Y0,F
B1,Y1,F
Multiply-Accumulate
Instruction Set Details
C
2
W
1
X:(Rn)+N
X:(Rn)+
Source
X0
Y1
Y0
A1
B1
A
B
Fractional multiply accumulate; multiplication result
optionally negated before accumulation
Parallel Memory Move
Destination
X:(Rn)+N
X:(Rn)+
Comments
X0
Y1
Y0
A1
B1
A
B
2
MAC
A-95
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