tm1300 NXP Semiconductors, tm1300 Datasheet - Page 316

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

TM1300 Data Book
dspuadd
SYNTAX
FUNCTION
DESCRIPTION
range [2
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is not changed.
EXAMPLES
A-30
r30 = 0x1200, r40 = 0xff
r10 = 0, r30 = 0x1200, r40 = 0xff
r20 = 1, r30 = 0x1200, r40 = 0xff
r50 = 0xffffffff, r90 = 1
r70 = 0x80000001, r80 = 0x7fffffff
As shown below, the
The
[ IF r guard ] dspuadd r src1 r src2
if r guard then {
}
r src1
temp
if (unsigned)temp > 0x00000000ffffffff then
else
dspuadd
r dest
r dest
3
32
–1..0] (or [0xffffffff..0]), and stores the clipped value into r dest .
Initial Values
zero_ext32to64(r src1 ) + zero_ext32to64(r src2 )
0xffffffff
temp<31:0>
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
dspuadd
Full-precision
unsigned
33-bit result
PRODUCT SPECIFICATION
r dest
operation computes unsigned sum r src1 +r src2 , clips the result into the unsigned
3
dspuadd r30 r40
IF r10 dspuadd r30 r40
IF r20 dspuadd r30 r40
dspuadd r50 r90
dspuadd r70 r80
3
0
r dest
Clip to [2
Operation
unsigned
unsigned
32
–1..0]
r src2
r60
r110
r120
3
r80
r100
0
0
Clipped unsigned add
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r60
no change, since guard is false
r100
r110
r120
dspiabs dspiadd dspimul
dspisub dspumul dspusub
unsigned
Philips Semiconductors
0x12ff
0x12ff
0xffffffff
0xffffffff
ATTRIBUTES
SEE ALSO
Result
dspalu
1, 3
No
67
—
0
2
2