PSB21384HV1.3 Infineon Technologies, PSB21384HV1.3 Datasheet - Page 127

• Manufacturer Part Number: PSB21384HV1.3
• Description: Telecom ICs AMuLaw/Speech CODEC w/ ST Transceiver
• Manufacturer: Infineon Technologies

Specifications of PSB21384HV1.3

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The controlling and programming of the various operation modes, configurations and
coefficients can be done via the microcontroller interface or the IOM-2 monitor channel
and is described in the corresponding interface section. An overview on these
programmable parameters can be found in chapter 4.8.
4.1
The Analog Front End section of the codec is the interface between the analog
transducers and the digital signal processor. In the transmit direction the AFE function is
to amplify the transducer input signals (microphones) and to convert them into digital
signals. In the AFE receive section the incoming digital signal is converted to an analog
signal which is output to an earpiece and/or a loudspeaker.
The three AFE configuration registers (ACR, ATCR, ARCR) provide a high flexibility to
accommodate an extensive set of user procedures and terminal attributes.
Figure 71 shows the block diagram of the Analog Front End:
.
Figure 71
Block Diagram of AFE
Data Sheet
Analog Front End (AFE) Description
DREF
117
PSB 21381/2
PSB 21383/4
2001-03-12
Codec