Dp Compare .S-Unit Instruction Hazards - Texas Instruments TMS320C6000 Series Reference Manual

Functional Unit Hazards
Table 6–4. DP Compare .S-Unit Instruction Hazards
Cycle
DP compare
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:
6-22
Table 6–4 shows the instruction hazards for DP compare instructions execut-
ing on the .S unit.
1
R RW
Xrw
Xr
Xrw
†
Xr
Same Side, Different Unit, Both Using Cross Path Executable
Xr
Xr
Xr
Xr
Xr
Xr
16 multiply
Xr
Xr
Xr
Xr
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
Xr Next instruction cannot enter E1 during cycle–read/decode hazard
Xrw Next instruction cannot enter E1 during cycle–read/decode/write hazard
†
The branch on register instruction is the only branch instruction that reads a
general-purpose register
Instruction Execution
2 3
Subsequent Same-Unit Instruction Executable