PSB 2134 H V2.2 Infineon Technologies, PSB 2134 H V2.2 Datasheet - Page 14

• Manufacturer Part Number: PSB 2134 H V2.2
• Description: IC CODEC FILTER 4CHAN MQFP-64
• Manufacturer: Infineon Technologies
• Series: SICOFI®r

Specifications of PSB 2134 H V2.2

• Function: CODEC Filter
• Interface: IOM-2 PCM, SPI
• Number Of Circuits: 4
• Voltage - Supply: 5V
• Current - Supply: 26mA
• Power (watts): 130mW
• Mounting Type: Surface Mount
• Package / Case: 64-QFP
• Includes: Level Metering Function, Tone Generation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Other names: PSB2134HV2.2X; SP000007389; SP000007390

Semiconductor Group
The microcontroller interface is connected to a microcontroller. Since the data transfer
does not require duplex operation it can be connected both to SPI compatible
microcontrollers (Siemens C5xx series, C161 series) as well as to Intel C51 based ones.
The SICOFI2/4-TE provides an high active interrupt output. The interrupts are caused by
changes on the input lines of each channel. In order to operate it is necessary to keep
DCL running all the time. If DCL is stopped in order to reduce the power consumption of
the system, additional hardware is required. This hardware may be used to generate
directly an interrupt to the microcontroller which may than request IOM-clocking.
Each channel serves seven I/O lines (2xO, 2xI, 3xI/O) which are used to control the
inputs of the SLIC or to fed the outputs of a SLIC to the microcontroller.
The RGEN output can be used to generate the input signal of a ringing SLIC. Its
frequency is programmable down to 35,7 Hz.
2.2
The SICOFI2/4-TE is designed for terminal adapters and Intelligent NT (NT1plus)
applications.
It is designed to reduce the number of external components required for the integrated
or discrete SLIC.
The SICOFI-2/4 TE bridges the gap between analog and digital voice signal
transmission in modern telecommunication systems. High performance oversampling
Analog-to-Digital Converters (ADC) and Digital-to-Analog Converters (DAC) provide the
conversion accuracy required. Analog antialiasing prefilters (PREFI) and smoothing
postfilters (POFI) are included. The connection between the ADC and the DAC (with high
sampling rate) and the DSP, is done by specific Hardware Filters, for filtering like
interpolation and decimation. The dedicated Digital Signal Processor (DSP) handles all
the algorithms necessary e.g. for PCM bandpass filtering, sample rate conversion and
PCM companding. The PCM-interface handles digital voice transmission, a serial
SICOFI2/4-TE command and indication pins. To program the filters, precalculated sets
of coefficients are downloaded from the system to the on-chip Coefficient-RAM (CRAM).
C-interface handles SICOFI2/4-TE feature control and transparent access to the
SICOFI
®
2/4-TE Principles
14
Functional Description
PSB 2132
PSB 2134
09.97