Texas Instruments TMS320C6000 Series Reference Manual page 125

MPY(U/US/SU)
Signed or Unsigned Integer Multiply 16lsb x 16msb
Example 4
Example 5
3-78
MPY .M1 13,A1,A2
Before instruction
A1 3497 FFF3h
A2 XXXX XXXXh
MPYSU .M1 13,A1,A2
Before instruction
A1 3497 FFF3h
A2 XXXX XXXXh
† Signed 16-LSB integer
‡ Unsigned 16-LSB integer
†
–13 A1 3497 FFF3h
A2 FFFF FF57h
‡
65523 A1 3497 FFF3h
A2 000C FF57h
2 cycles after instruction
–163
2 cycles after instruction
851779