Texas Instruments TMS320C67X/C67X+ DSP Car Speaker User Manual


 
Functional Unit Constraints
4-41PipelineSPRU733
Table 425 shows the instruction constraints for 4-cycle instructions executing
on the .M unit.
Table 425. 4-Cycle .M-Unit Instruction Constraints
Instruction Execution
Cycle 1 2 3 4 5
4-cycle R W
Instruction Type
Subsequent Same-Unit Instruction Executable
16 × 16 multiply Xw
4-cycle 
MPYI

MPYID

MPYDP

Instruction Type
Same Side, Different Unit, Both Using Cross Path Executable
Single-cycle
Load 
Store

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; Xw = Next instruction cannot enter E1 during cycle-write
constraint