Functional Unit Constraints
Pipeline4-52 SPRU733
4.3.4 .D-Unit Instruction Constraints
Table 4−36 shows the instruction constraints for load instructions executing on
the .D unit.
Table 4−36. Load .D-Unit Instruction Constraints
Instruction Execution
Cycle 1 2 3 4 5 6
Load RW W
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
To Next Page