Texas Instruments TMS320C67X/C67X+ DSP manual Mpyus, Multiply Unsigned 16 LSB y Signed 16 LSB

MPYUS Multiply Unsigned 16 LSB x Signed 16 LSB

MPYUS				Multiply Unsigned 16 LSB y Signed 16 LSB
Syntax					MPYUS (.unit) src1, src2, dst
					.unit = .M1 or .M2
Compatibility					C62x, C64x, C67x, and C67x+ CPU
Opcode
31	29	28	27	23		22	18	17	13	12	11	7	6	5	4	3	2	1	0

creg

z

dst

src2

src1

x

1 1 1 0 1 0

0 0 0 0 s p

3 155511 1

Opcode map field used...	For operand type...	Unit
src1	ulsb16	.M1, .M2
src2	xslsb16
dst	sint

Description

Execution

Pipeline

The unsigned operand src1 is multiplied by the signed operand src2. The result is placed in dst. The S is needed in the mnemonic to specify a signed operand when both signed and unsigned operands are used.

if (cond)	lsb16(src1) ⋅ lsb16(src2) → dst
else nop

Pipeline

StageE1 E2

Read src1, src2

Writtendst

Unit in use .M

Instruction Type	Multiply (16 ⋅ 16)
Delay Slots	1
See Also	MPY, MPYU, MPYSU

3-176 Instruction Set SPRU733