NS32FX164AV-25 National Semiconductor, NS32FX164AV-25 Datasheet - Page 52

• Manufacturer Part Number: NS32FX164AV-25
• Description: IC IMAGING COMM SGNL PROC PLCC68
• Manufacturer: National Semiconductor

Specifications of NS32FX164AV-25

• Processor Type: Advanced Imaging/Communications Signal Processor SIAP™
• Speed: 50MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Other names: *NS32FX164AV-25; Q1284286

3 0 Functional Description
Operation
Y n
* Y n
Note When PARAM CLR is set to ‘‘1’’ only multiplication is performed
VCMAD Vector Complex Multiply and Add
The VCMAD instruction multiplies the corresponding ele-
ments of the X and Y complex vectors and adds or sub-
tracts the result to the complex vector Z This result is
placed in the Z output vector
Syntax
EXEC VCMAD
Operation
Note When PARAM COJ is set to ‘‘1’’ X n is multiplied by the conjugate
3 4 5 13 Clipping and Min Max Instructions
VARABS Vector Aligned Real Absolute Value
The VARABS instruction computes the absolute value of
each element in the real vector X and places the result in
the corresponding place in the Y output vector
Syntax
EXEC VARABS
Operation
Note There is no representation for the absolute value of 0x8000 Whenev-
15
15
aligned real X Y
extended Z
for (n 0
Z 2n
Z 2n 1
complex X Y Z
for (n 0
aligned real X Z
for (n 0
without addition When PARAM SUB is set to ‘‘1’’ the ‘‘
replaced by a ‘‘
of Y n
formed without addition When PARAM SUB is set to ‘‘1’’ the ‘‘
sign is replaced by a ‘‘
er an absolute value of 0x8000 is needed OVF SAT is set to ‘‘1’’ and
the maximum positive number 0x7FFF is returned
Z n
Z n
Z n
low)
high)
10000
10000
low
high
When PARAM CLR is set to ‘‘1’’ only multiplication is per-
(extended) (Z 2n
(complex) (Z n
n
(extended) (Z 2n 1
n
n
b
k
k
k
’’ sign
abs (X n
abs (X n
LENG
LENG
LENG
b
’’ sign
11 10
11 10
n
n
n
low)
)
)
)
high)
100 1110 0000
100 0001 1111
X n
X n
(Continued)
X n
* Y n )
low *
a
high
’’ sign is
a
0
0
’’
52
VARMIN Vector Aligned Real Minimum
The VARMIN instruction compares corresponding elements
of the X and Y real vectors and writes the smaller of the two
in the corresponding place in the Z integer vector
Syntax
EXEC VARMIN
Operation
VARMAX Vector Aligned Real Maximum
The VARMAX instruction compares corresponding ele-
ments of the X and Y real vectors and writes the larger of
the two in the corresponding place in the Z integer vector
Syntax
EXEC VARMAX
Operation
VRFMIN Vector Real Find Minimum
The VRFMIN instruction scans the X real vector and returns
the address of the element with the smallest value The
resulting address is placed in Z 0
Syntax
EXEC VRFMIN
15
15
15
aligned real X Y Z
for (n 0
aligned real X Y Z
for (n 0
Z n
Z n
Z n
Z n
10000
10000
10000
low
high
low
high
n
n
k
k
min (X n
max (X n
min (X n
max (X n
LENG
LENG
11 10
11 10
11 10
n
n
low
low
)
)
high
high
100 0101 1111
100 0110 0110
100 0110 1101
Y n
Y n
Y n
Y n
low)
low)
high)
high)
0
0
0