Texas Instruments TMS320C3x - Manual (Page 249)

Write must
complete
before the
two reads can
complete
2 reads
performed
Pipeline Conflicts
8-13 Pipeline Operation
Example 8–8. Single Store Followed by Two Reads
STF R 0,*AR1 ; R0
→
*AR1
LDF *AR2,R1 ; *AR2
→
R1 in parallel with

LDF *AR3,R2 ; *AR3
→
R2
Pipeline Operation
PC Fetch Decode Read Execute
n STF — — —
n+1 LDF

LDF STF — —
n+2 W LDF

LDF STF —
n+3 X W LDF

LDF STF
n+4 X W LDF

LDF (nop)
n+4 Y X W LDF

LDF
Note: W, X, Y = Instruction representations