dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 565

• Manufacturer Part Number: dsp56800e
• Description: 16-bit Digital Signal Controller Core
• Manufacturer: Freescale Semiconductor, Inc

MPYR
Parallel Dual Reads:
Instruction Opcodes:
Timing:
Memory:
Freescale Semiconductor
MPYR
MPYR
MPYR
MPYR
MPYR
1.This instruction is not allowed when the XP bit in the OMR is set (that is, when the instructions are executing
from data memory).
2.This instruction occupies only 1 program word and executes in 1 cycle for every addressing mode.
Operation
MPYR
Data ALU Operation
–Q1,Q2,FFF
FFF1,FFF1,FFF
Q1,Q2,F GGG,X:<ea_m>
Q1,Q2,F X:<ea_m>,GGG
Q3,Q4,F X:<ea_m>,reg1
2
1 oscillator clock cycle
1 program word
X:<ea_v>,reg2
Operands
Y1,X0,F
Y1,Y0,F
Y0,X0,F
C1,Y0,F
1
Signed Multiply and Round
15
15
15
15
15
0
0
0
0
0
Instruction Set Details
Source 1
X:(R0)+N
X:(R1)+N
X:(R4)+N
X:(R0)+N
X:(R4)+N
X:(R0)+
X:(R1)+
X:(R4)+
X:(R0)+
X:(R4)+
1
0
0
1
1
First Memory Read
1
0
1
1
1
12
12
12
12
12
0
1
1
1
1
11
11
11
11
11
1
0
0
0
0
Destination 1
G
G
0
0
1
Y0
Y1
Y0
Y1
G
G
F
F
v
G
G
F
F
v
8
8
8
8
8
F
F
F
F
F
7
7
7
7
7
X:(R3)+N3
X:(R3)+N3
Source 2
Q
Q
Q
X:(R3)+
X:(R3)–
X:(R3)+
X:(R3)+
J
v
Second Memory Read
Q
Q
Q
Q
J
Q
Q
Q
Q
J
4
4
4
4
4
J
1
1
1
1
3
3
3
3
3
MPYR
Destination 2
m
m
m
0
J
X0
X0
C
R
R
1
0
1
A-221
R
R
1
v
1
0
0
0
0
0