dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 492

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

IMPY.W
Instruction Fields:
Instruction Opcodes:
Timing:
Memory:
A-148
IMPY.W Q1,Q2,FFF
Operation
IMPY.W
1 oscillator clock cycle
1 program word
Y1,X0,FFF
Y0,X0,FFF
Y1,Y0,FFF
Y0,Y0,FFF
A1,Y0,FFF
B1,Y1,FFF
C1,Y0,FFF
C1,Y1,FFF
Operands
DSP56800E Core Reference Manual
Integer Multiply Word
15
0
1
C
1
1
W
1
12
1
Integer 16 × 16 multiply with 16-bit result.
When the destination is the Y register or an accumula-
tor, the LSP portion is unchanged by the instruction.
Note: Assembler also accepts the first two operands
when they are specified in the opposite order.
11
0
0
F
F
8
F
7
Comments
Q
Freescale Semiconductor
Q
Q
4
IMPY.W
1
3
0
1
0
0