PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 189

• 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

4.1.1 Hook Switch Logic
The hook switch logic provides two features:
For a standard terminal application the first information is sufficient because the state is transparent
in the registers CIR1 in IOM-2-mode or in SSCR in SLD-mode respectively. In the Siemens ISDN
PC-userboard concept, however, the firmware needs an additional information about a change of
the hook switch position. This information is gained from a monoflop and an OR-gate. Every change
of the hook switch short-circuits a pair of pins of the DTMF-generator, so that a pair of frequencies
is transmitted to the DTMF-receiver of the Audio Interface Module SIPB 5130 ("relative detection"
of the hook switch) in order to activate/deactivate the line and power-up/power-down the
ARCOFI-SP.
4.1.2 DTMF-Generator
According to the key pressed, for each of the 12+1 push buttons on the single-contact keyboard the
Dual-Tone Multi-Frequency Generator IC1 (PSB 8593) generates pairs of frequencies. These are
specified by CCITT and are derived from a standard TV-crystal (3.58 MHz). The frequencies are
sent to the DTMF-receiver of the audio interface module.
4.1.3 ARCOFI
The Audio Ringing Codec Filter ARCOFI-SP (PSB 2165), the heart of the Telephone Board,
provides all necessary functions to convert analog signals into PCM-coded signals and vice versa.
In addition the highly sophisticated speakerphone feature is implemented into the same chip.
Setting gains and filter coefficients in receive and transmit direction, generating DTMF- and ringing
signals, amplifying the analog paths are all done by programming the device. A basic program is
shown in section 7. For more details on the ARCOFI-SP circuit and its programming structure refer
to the corresponding data sheet and description.
Transmission of PCM-coded signals is done either via lOM-2 bus or SLD-bus:
Using the IOM-2 bus two data lines are necessary: DU (Data Upstream) to send data from
ARCOFI-SP to layer 1, and DD (Data Downstream) to carry back data from layer 1 to the
ARCOFI-SP. While DU is physically equal to the SLD-line (pin 7 of ARCOFI-SP), DD is realized with
the line between pin 4 of the SAC-plug and pin 6 of ARCOFI-SP.
Using the SLD-bus the digital words are received/transmitted on the bidirectional SLD-line (Serial
Line Data) at pin 7 (SIP) of the ARCOFI-SP and led to pin 8 at the SAC-plug of the telephone board.
4.1.4 LEDs
Above the 12+1 keys keyboard of the ARCOFI-SP Telephone Board there are four LEDs to indicate
operational states. They are connected to the Peripheral Control Interface (PCI) of the ARCOFI-SP.
The left-most of these is to signal the state of the hook switch (SD). It lights up in off-hook position.
The remaining ones are for free use (see also section 5.3).
Semiconductor Group
signaling the state of the hook switch via pin 2 (SD) of the ARCOFI-SP and
signaling a change of the hook switch position.
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-SP
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SIPB 5132-SP