PEB 2466 H V2.2 Infineon Technologies, PEB 2466 H V2.2 Datasheet - Page 36

• Manufacturer Part Number: PEB 2466 H V2.2
• Description: IC SICOFI-4 SGL CHIP CMOS MQFP64
• Manufacturer: Infineon Technologies
• Series: SICOFI®r

Specifications of PEB 2466 H V2.2

• Function: CODEC Filter
• Interface: PCM, SPI
• Number Of Circuits: 4
• Voltage - Supply: 5V
• Current - Supply: 26mA
• Power (watts): 130mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-QFP
• Includes: Advanced On-Chip Functions, Digital Signal Processing (DSP) Technique, Level Metering, Tone Generators
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEB2466HV2.2XT; PEB2466HV22NP; PEB2466HV22XP; SP000007516; SP000007517

Hardware Reference Manual
5
The SICOFI
• Analog Interface,
• PCM Interface,
• Signaling Interface, and
• Serial Microcontroller Interface.
A general description of these interface is given in the Product Overview, Chapter 4.
Refer to the Programmers Reference Manual for information on the configuration and
operation of the four interfaces.
The subsequent chapters in this manual explain how to connect the SICOFI
subscriber line interface circuits (SLICs), microcontrollers, and PCM highways.
5.1
The Analog Interface in combination with a Subscriber Line Interface Circuit (SLIC)
forms a configurable tip & ring (t/r) telephone line. The AC transmission characteristic of
the SICOFI
structures inside the SICOFI
targeted AC transmission behavior (e.g. Telco specification) and by the transfer
functions of the SLIC.
The SICOFI
The high driving capability of up to 300 Ohms eliminates the need for an external
amplifier that is normally used with transformer SLICs.
The peak amplitude of the analog inputs and outputs is at 2.223 V (overload point).
Out-of-band signals applied to the analog inputs are suppressed by the on-chip digital
hardware filters. The poles of these filters are fixed at 12 kHz and 16 kHz which
suppresses the echo signal from teletax pulses very efficiently: As long as the amplitude
of the teletax echo stays below the overload threshold of 2.223 Vp (1.57 Vrms), the voice
signal in the transmit path will not be disturbed. Thus, the on-chip hardware filters can
eliminate the need for external teletax filters.
5.1.1
A coupling capacitor >39 nF must be used on the V
required value for the coupling capacitor on the V
resistance of the SLIC-circuitry (R
response requirement in the receive direction. Figure 16 can be used to determine an
appropriate value for the coupling capacitor (C
®
Interface Description
Analog Interface
Coupling Capacitors at the Analog Interface
®
®
4-µC—SLIC combination can be controlled by programming the digital filter
4-µC can be interfaced directly to electronic SLICs or transformer solutions.
4-µC provides four interfaces:
®
4-µC. The correct filter coefficients are determined by the
Load
). It has to be chosen to fulfil the frequency
27
Ext1
).
IN
-pins in the transmit direction. The
OUT
-pins depends on the input
Interface Description
PEB 2466
PEF 2466
2001-02-20
®
4-µC to