S-Unit Hazards; Single-Cycle .S-Unit Instruction Hazards - Texas Instruments TMS320C6000 Series Reference Manual

6.3.1

.S-Unit Hazards

Table 6–3. Single-Cycle .S-Unit Instruction Hazards
Cycle
Single-cycle
Instruction Type
Single-cycle
DP compare
2-cycle DP
Branch
Instruction Type
Single-cycle
Load
Store
INTDP
ADDDP/SUBDP
16
4-cycle
MPYI
MPYID
MPYDP
Legend:
Table 6–3 shows the instruction hazards for single-cycle instructions execut-
ing on the .S unit.
1
RW
Same Side, Different Unit, Both Using Cross Path Executable
16 multiply
E1 phase of the single-cyle instruction
R Sources read for the instruction
W Destinations written for the instruction
Next instruction can enter E1 during cycle
Instruction Execution
2
Subsequent Same-Unit Instruction Executable
Functional Unit Hazards
TMS320C67x Pipeline 6-21