dsp56800 Freescale Semiconductor, Inc, dsp56800 Datasheet - Page 356

• Manufacturer Part Number: dsp56800
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

MPYR
Parallel Moves:
Parallel Dual Reads:
Timing:
Memory:
A-126
Operation
MPYR
1.
are executing from data memory).
2.
mode.
Data ALU Operation
This parallel instruction is not allowed when the XP bit in the OMR is set (that is, when the instructions
This instruction occupies only 1 program word and executes in 1 instruction cycle for every addressing
2 + mv oscillator clock cycles for MPYR instructions with parallel move
2 oscillator clock cycles for MPYR instructions without parallel move
1 program word
2
Operation
1.
for every addressing mode.
2.
as the destination of the parallel read operation. Memory writes are allowed in this case.
MPYR
Data ALU Operation
(F = A or B)
This instruction occupies only 1 program word and executes in 1 instruction cycle
The destination of the data ALU operation is not allowed to be the same register
Operands
Y1,X0,F
Y1,Y0,F
Y0,X0,F
1
1
(F = A or B)
Signed Multiply and Round
Operands
Y1,X0,F
Y0,X0,F
Y1,Y0,F
Y0,Y0,F
A1,Y0,F
B1,Y1,F
DSP56800 Family Manual
X:(R0)+N
X:(R1)+N
Source 1
X:(R0)+
X:(R1)+
First Memory Read
X:(Rn)+N
X:(Rn)+
Source
Destination 1
X0
Y1
Y0
A1
B1
A
B
Y0
Y1
Parallel Memory Move
Source 2
X:(R3)+
X:(R3)-
Destination
Second Memory Read
X:(Rn)+N
X:(Rn)+
X0
Y1
Y0
A1
B1
A
B
Freescale Semiconductor
2
Destination 2
MPYR
X0