Texas Instruments TMS320C67X/C67X+ DSP User Manual
Page 377
Functional Unit Constraints
4-45
Pipeline
SPRU733
Table 4−29 shows the instruction constraints for MPYSP instructions
executing on the .M unit.
Table 4−29. MPYSP .M-Unit Instruction Constraints
Instruction Execution
Cycle
1
2
3
4
MPYSP
R
W
Instruction Type
Subsequent Same-Unit Instruction Executable
MPYSPDP
n
n
n
MPYSP2DP
n
n
n
Instruction Type
Same Side, Different Unit, Both Using Cross Path Executable
Single-cycle
n
n
n
Load
n
n
n
Store
n
n
n
DP compare
n
n
n
2-cycle DP
n
n
n
Branch
n
n
n
4-cycle
n
n
n
INTDP
n
n
n
ADDDP/SUBDP
n
n
n
Legend:
= E1 phase of the single-cycle instruction; R = Sources read for the instruction; W = Destinations written for the
instruction;
n
= Next instruction can enter E1 during cycle