PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 47

• 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

2.2.4.4 Tone Filter
The tone filter contains a programmable equalizer and a saturation amplifier (see
figure 19). If no filter function is necessary, a by-pass mode can be used
(TGCR.ETF = 0). A brief description of the tone filter follows below.
The equalizer is realized as a band-pass filter. The filter parameters (center frequency,
bandwidth, and attenuation of the stop-band) are programmable.
A generated square-wave or trapezoid signal can be converted by the equalizer into a
sine-wave signal. A maximum attenuation of the first harmonic frequency of 50 dB is
possible.
By programming the equalizer as a broadband filter, the quality of the DTMF-signal
(receive direction) is improved. A level balancing of the two frequency components can
be made with G1, G2, G3 and GD1, GD2, GD3.
The two main purposes of the programmable saturation amplification are:
Description of the programmable parameters:
Parameter
A1
A2
K
GE
Semiconductor Group
Level balancing of the filtered signal (avoidance of overload effects).
Amplification up to + 12 dB followed by a saturation of the incoming signal. This
saturation amplification converts a sine-wave signal into a square-wave or a trapezoid
signal where their edges are eliminated. This method produces pleasant ringing
tones.
# of CRAM
Bytes
1
1
1
1
Range
200 Hz to 4 kHz
0 to – 1
0 to 54 dB
+ 12 to – 12 dB
46
Comment
Center frequency
Bandwidth
(strongly dependent on A1 and K)
Attenuation of the stop-band
Saturation amplification
Functional Description