PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 260

• 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

value of 0 dB at one sampling frequency point. The reference frequency is the sampling
frequency which is equal to or closest to 1000 Hz.
Note: Because the algorithm is based on a random process, different runs of the
3.2
The coefficients for the FX transmit and FR receive path correction filters can be
calculated either with the ARCOS-SP PLUS or with the ARCOS-SP program. Both
programs generate filter coefficients and graphically display the filter transfer functions
(amplitude transfer function in dB, group delay response in s). The graphic output is
only possible if the system is equipped with an EGA, VGA, CGA, or a Hercules graphics
card. The transfer function can also be stored in tabular form in two separate files, one
for the amplitude response (*.AMP) and one for the group delay response (*.GDY).
After clicking at the FX or FR filter box in the ASP window (ARCOFI-SP signal processor)
an dialogue box appears that offers the choice between three basic optimization modes.
For each mode the optimization speed must be chosen as either "fast", "middle" or
"best". Once the optimization mode, the selected speed of optimization and the required
file names have been entered, the calculation starts.
Optimization Speed
The optimization process might require long computing time in some difficult cases, in
particular a "best" fit with over 100 frequency points might take hours to be completed
when using a slow PC without co-processor. It has been found that between 20 to 30
sampling points usually give a satisfactory result while keeping the calculation time
reasonably short.
Optimization Mode "flat target function"
For a flat frequency response, the algorithm approximates the inverted function of the
input function. The input function must be declared in an input file. The file has to be
entered with the filename and the extension. An example for an input file shows table 1.
For the FR filter a second input function can be entered (e.g. one for the handset
earpiece, the second for the loudspeaker). The calculation points of this second input
function are interpolated and subsequently averaged. Hereby ARCOS-SP PLUS will
eliminate automatically the frequency areas which are not common in both input
functions (ranges at lower and upper frequencies).
When the coefficients have been calculated, the inverse curve of the input function is
displayed if a graphics screen is available. On the same graph the filter functions of FX
Semiconductor Group
program, starting from the same input function, can give different results. It is
recommended to make several runs and to take the best result (see also
page 262).
Calculation of Coefficients
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