Intsp – Texas Instruments TMS320C67X/C67X+ DSP User Manual
Page 181
Convert Signed Integer to Single-Precision Floating-Point Value
INTSP
3-121
Instruction Set
SPRU733
Convert Signed Integer to Single-Precision Floating-Point Value
INTSP
Syntax
INTSP (.unit) src2, dst
.unit = .L1 or .L2
Compatibility
C67x and C67x+ CPU
Opcode
31
29
28
27
23
22
18
17
13
12
11
5
4
3
2
1
0
creg
z
dst
src2
0 0 0 0 0 x 1 0 0 1 0 1 0 1 1 0 s p
3
1
5
5
1
1
1
Opcode map field used...
For operand type...
Unit
src2
dst
xsint
sp
.L1, .L2
Description
The signed integer value in src2 is converted to single-precision value and
placed in dst.
Execution
if (cond)
sp(src2) → dst
else
nop
The only configuration bit that can be set is the INEX bit and only if the mantissa
is rounded.
Pipeline
Stage
E1
E2
E3
E4
Read
src2
Written
dst
Unit in use
.L
Instruction Type
4-cycle
Delay Slots
3
Functional Unit
Latency
1
See Also
INTDP, INTDPU, INTSPU
Example
INTSP .L1 A1,A2
Before instruction
4 cycles after instruction
A1 1965 1127h
426053927
A1 1965 1127h
426053927
A2 xxxx xxxxh
A2 4DCB 2889h
4.2605393 E08
Pipeline