PSB 2134 H V2.2 Infineon Technologies, PSB 2134 H V2.2 Datasheet - Page 78

• 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
To calculate the applied analog level, the gain settings of the SICOFI2/4-TE filters
together with the 0 dBm0 reference voltage have to be taken into consideration.
Figure 34
Measurement of an unknown level
8.9
If the test signal is fed via tone generator 1 or via PCM4 in the receive path of the
SICOFI2/4-TE a loop is necessary to feed the test signal back to the transmit path.
Digital loops are implemented in the SICOFI2/4-TE and can be activated by writing
register CR4. After switching an internal loop the measured level is a representation of
the internal attenuation and amplification via the filter blocks. Such self tests show
whether the SICOFI2/4-TE is working or not and how it is adjusted.
In a line card application a SLIC is connected to each channel of the SICOFI2/4-TE. The
SLIC together with a connected analog telephone creates a loop from the receive-path
to the transmit path. SLIC, subscriber line and telephone have a special impedance
according to their specification. If only one of them changes the value, the returned test
signal will be changed und will indicate a change in the corresponding system condition.
Therefore, changes of the telephone state, the subscriber line length or the SLIC can be
supervised.
8.10
8.10.1 Supervision the State of a Subscriber Line
The configuration of an application example is shown in figure 38.
Figure 35
Test configuration
Analog
Telephone
Set
Loops
Application Examples
tip
ring
Analog
Test Signal
Subscriber Line
TAS 2100
Loop Emulator
~
C
GNDA
tip
ring
VIN
Harris-SLIC
HC3-5502B
78
SLIC
Level Metering
Function
SICOFI2/4-TE
Application Note: Level Metering
VIN
VOUT
Test Signal
Tone Generator 1
Level Metering
Function
SICOFI2/4-TE
PSB 2132
PSB 2134
09.97