Instruction formats and opcodes – Freescale Semiconductor StarCore SC140 User Manual
Page 687
RTSD
SC140 DSP Core Reference Manual
A-373
Instruction Formats and Opcodes
Instruction
Words
Cycles
1
Note 1: RTSD uses 3 cycles if the RAS is valid. RTSD uses 5 cycles if the RAS is not valid and the shadow SP
is valid.RTSD uses 6 cycles if neither the RAS nor the shadow SP are valid. To get the correct cycle count
for this instruction, subtract the execution time taken by the execution set in the delay slot. The cycle count
for this instruction cannot be less than 1 cycle (2 cycles if shadow SP is not valid).
Type
Opcode
15
8
7
0
RTSD
1
3/5/6
4
1
0
0
1
1
1
1
1
0
1
1
1
0
0
0
0