Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 287)

Convert Single-Precision Floating-Point Value to Double-Precision Floating-Point Value SPDP
3-227 Instruction Set SPRU733
Pipeline
Stage
E1 E2
Read src2
Written dst_l dst_h
Unit in use .S
If dst is used as the source for the ADDDP, CMPEQDP, CMPLTDP,
CMPGTDP, MPYDP, or SUBDP instruction, the number of delay slots can be
reduced by one, because these instructions read the lower word of the DP
source one cycle before the upper word of the DP source.
Instruction Type 2-cycle DP
Delay Slots 1
Functional Unit
Latency 1
See Also DPSP, INTDP, SPINT, SPTRUNC
Example SPDP .S1X B2,A1:A0
Before instruction 2 cycles after instruction
B2 4109 999Ah 8.6 B2 4109 999Ah 8.6
A1:A0 xxxx xxxxh xxxx xxxxh A1:A0 4021 3333h 4000 0000h 8.6
Pipeline