Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 366)

Functional Unit Constraints
Pipeline 4-34 SPRU733
4.3.1 .S-Unit Constraints
Table 4−18 shows the instruction constraints for single-cycle instructions
executing on the .S unit.
Table 4−18. Single-Cycle .S-Unit Instruction Constraints
Instruction Execution
Cycle 1 2
Single-cycle RW
Instruction Type Subsequent Same-Unit Instruction Executable
Single-cycle n
DP compare n
2-cycle DP n
ADDDP/SUBDP n
ADDSP/SUBSP n
Branch n
Instruction Type Same Side, Different Unit, Both Using Cross Path Executable
Single-cycle n
Load n
Store n
INTDP n
ADDDP/SUBDP n
16 × 16 multiply n
4-cycle n
MPYI n
MPYID n
MPYDP 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