Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 382)

Functional Unit Constraints
Pipeline 4-50 SPRU733
Table 4−34 shows the instruction constraints for INTDP instructions executing
on the .L unit.
Table 4−34. INTDP .L-Unit Instruction Constraints
Instruction Execution
Cycle 1 2 3 4 5 6
INTDP R W W
Instruction Type Subsequent Same-Unit Instruction Executable
Single-cycle n n Xw Xw n
4-cycle Xw n n n n
INTDP Xw n n n n
ADDDP/SUBDP n n n n n
Instruction Type Same Side, Different Unit, Both Using Cross Path Executable
Single-cycle n n n n n
DP compare n n n n n
2-cycle DP n n n n n
4-cycle n n n n n
Load n n n n n
Store n n n n n
Branch n n n n n
16 × 16 multiply n n n n n
MPYI n n n n n
MPYID n n n n n
MPYDP n n 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; Xw = Next instruction cannot enter E1 during cycle-write
constraint