PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 263

• Manufacturer Part Number: PSB2163T-V31TR
• Description: IC AUDIO RINGING CODEC 28-PDSO
• Manufacturer: Infineon Technologies
• Series: ARCOFI®r

Specifications of PSB2163T-V31TR

• Function: CODEC Filter
• Interface: IOM-2, PCI, Serial
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 900µA
• Power (watts): 1mW
• Operating Temperature: -25°C ~ 80°C
• Mounting Type: Surface Mount
• Package / Case: DSO-28
• Includes: Activation and Deactivation, B-Channel and D-Channel HDLC Controllers, D-Channel Priority Handler, Monitor Channel Handler
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: PSB2163T-V31INTR; PSB2163T-V31TR

SIPO 2163
If a sampling frequency point is higher than the highest point or lower than the lowest
point of the target function then the algorithm considers that the frequency response can
have any value at this point. These calculation sampling points are not recognized and
therefore do not influence the calculation.
After the calculation of the coefficients the input functions and filter functions of FX or FR
are added and the result is graphically displayed. In the same graph the target function
is also shown. Both curves are shifted such that they have the same amplitude value at
the reference frequency.
After quitting the discrepancy, i.e. the difference between the two curves, is graphically
shown. When quitting again one leaves the graphics mode. Finally the results as
described for the "flat frequency response" are displayed.
Optimization Mode "limited by an upper and lower curve"
The algorithm tries to compensate the input function such that the addition of this input
function and of the filter functions of FX or FR is as close as possible to the middle of the
upper and the lower limiting curves (which is then the target function). Before starting the
algorithm, the target function as well as the weighting factors are calculated.
First, the sampling frequency points of the upper limit and lower limit are adjusted to the
ones of the input function. Then the algorithm checks whether each sampling frequency
point of the input function has a corresponding sampling frequency point in the upper and
lower function. If a sampling frequency point is not found in the upper and lower curves,
then the amplitude value for this sampling frequency point is interpolated by making a
linear approximation from the two points closest to the desired sampling frequency point.
Finally for each frequency point the mean of the upper and the lower limit is calculated.
These mean values describe the target function.
If a sampling frequency point is higher than the highest point or lower than the lowest
point of the upper and lower limiting curve, then the algorithm considers that the
frequency response can have any value at this point. These calculation samples would
not be recognized.
The ratio of the longest and shortest distance between the upper and the lower limiting
curves (for one frequency) defines the size of a weighting factor. The shorter the
distance between the limiting curves, the better the correction, the larger the weighting
factor. The weighting factor is taken into consideration when calculating the greatest
absolute difference as well as the mean of the square of the difference.
After the calculation of the coefficients, the input function and the filter functions of FX or
FR are added and the result is graphically displayed. In the same graph the upper and
lower limits are also shown. The curves are shifted in such a way, that the input function
and the target function have the same amplitude value at the reference frequency.
Finally the mean square of the difference and the other values described above, are
displayed.
Semiconductor Group
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