PSB2163T-V31TR Infineon Technologies, PSB2163T-V31TR Datasheet - Page 62

• 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

2.2.5.6 Automatic Gain Control of the Receive Direction (AGCR)
The Automatic Gain Control of the receive direction AGCR (figure 28) is similar to the
transmit AGC. One additional parameter (AAR) offers an automatic amplification. The
maximum attenuation is selectable with AAR. Depending on the parameters AAR and
AGR three different behaviours of the AGCR are possible:
• AGR = 0:
• AGR = AAR:
•
If the AGCR is disabled in speakerphone mode, the Loudness Gain Adjustment stage
(LGAR) offers a programmable amplification in front of the SDR. It is enabled together
with the bit GCR.SP. It is highly recommended to program reasonable amplifications in
the digital gain stages. Otherwise the ASP will run into saturation above the 3.14 dB
PCM-value.
Note that the speech detector for the receive direction is supplied with the signal that
comes out of the AGR-block.
Figure 28
Function of the Receive AGC
Semiconductor Group
AAR > AGR: the combination of the previous tasks: If the signal is smaller than
the only task of the AGCR is to prevent clipping. If the RX-signal
exceeds the compare level, the AGCR starts to attenuate it.
the AGCR works as an automatic amplifier. The RX-signal will be
amplified if it is smaller than the compare level.
the compare level it will be amplified while if it exceeds the level it
will be attenuated. The AGCR functions like a dynamic compressor.
While the digital RX-signal level varies, the volume coming out of the
loudspeaker remains constant.
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Functional Description