Texas Instruments TMS320C28x Reference Manual page 78

Shift Operations
Table 2−11. Shift Operations (Continued)
Operation Type
Shift of P as per PM bits. Syntaxes:
ADD ACC, P
SUB ACC, P
CMP ACC, P
MAC P, loc, 0:pmem
MOV ACC, P
MOVA T, loc
MOVP T, loc
MOVS T, loc
MPYA P, loc, #16BitSigned
MPYA P, T, loc
MPYS P, T, loc
2-48
Illustration
For PM = 0:
Discard
For PM = 1: No shift
For PM from 2−7:
Sign
P
Shift left
32 bits to ALU
P
Shift right
32 bits to ALU
0
Discard