PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 38

• 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

2.2.1
In the transmit direction a series of decimation filters reduces the sampling rate down to
the 8-kHz PCM-rate. These filters attenuate the out-of-band noise by limiting the transmit
signal to the voice band.
The decimation stages end with a EWDF low-pass filter which band-limits the voice
signal to the CCITT G.714 and ETSI (NET33) recommendations. The ARCOFI meets or
exceeds all the CCITT and ETSI (NET33) recommendations on attenuation distortion
and group delay distortion.
If the tone generation unit is connected to the transmit direction (TGSR.DTMF = 1), a
special 2-kHz DTMF-low-pass filter is placed in the transmit path. This filter guarantees
an attenuation of all unwanted frequency components, if DTMF-signals are transmitted.
Additionally, it is possible to add a programmable tone signal to the transmit voice signal
(TGSR.TRX = 1).
The GX-gain adjustment stage is digitally programmable allowing the gain to be
programmed from + 6 to 0 dB in steps of 0.25 dB (–
Two bytes are necessary to set GX to the desired value. On reset, the GX-gain stage is
by-passed.
The transmit path contains a programmable high performance frequency response
correction filter FX allowing an optimum adaptation to different types of microphones
(dynamic, piezoelectric or electret). Twelve bytes are necessary to set FX to the desired
frequency correction function. On reset, the FX-frequency correction filter is by-passed.
Figure 18 shows the architecture of the FX/FR-filter.
A high-pass filter (HPX) is also provided to remove power line frequencies.
The voice signal, after being linearly processed, can be output as an 8-bit PCM-word
according to the CCITT G.711 A-law or the North-American -law format. If desired the
companding stage can be by-passed, a 16-bit linear word (2s complement) is then
output to the IOM-2 or SDI-interface.
2.2.2
In the receive path the incoming PCM-signal is expanded into a linear code according to
the selected A-law or -law. If the linear mode is chosen, the PCM-expander circuit is
by-passed and a 16-bit linear word (2s complement) has to be provided to the processor.
The block VDM offers several possibilities of voice/data manipulation for special
applications.
A programmable sidetone gain stage GZ adds a sidetone signal to the incoming voice
signal. The sidetone gain can be programmed from – 54 to 0 dB within a 1 dB tolerance
Semiconductor Group
Transmit Signal Processing
Receive Signal Processing
37
dB and others are also possible).
Functional Description