Functional Unit Constraints
Pipeline4-54 SPRU733
Table 4−38 shows the instruction constraints for single-cycle instructions
executing on the .D unit.
Table 4−38. Single-Cycle .D-Unit Instruction Constraints
Instruction Execution
Cycle 1 2
Single-cycle RW
Instruction Type
Subsequent Same-Unit Instruction Executable
Single-cycle
Load
Store
Instruction Type
Same Side, Different Unit, Both Using Cross Path Executable
16 × 16 multiply
MPYI
MPYID
MPYDP
Single-cycle
DP compare
2-cycle DP
Branch
4-cycle
INTDP
ADDDP/SUBDP
Legend: = E1 phase of the single-cycle instruction; R = Sources read for the instruction; W = Destinations written for the
instruction;
= Next instruction can enter E1 during cycle