PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 16

• Manufacturer Part Number: PEF 20954 HT V1.1
• Description: IC ECHO CANCELLER DGTL TQFP144
• Manufacturer: Infineon Technologies

Specifications of PEF 20954 HT V1.1

• Function: Smart Integrated Digital Echo Canceller (SIDEC)
• Interface: PCM, Serial, UCC
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 350mA
• Power (watts): 900mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-LFQFP
• Includes: Double Talk Detection
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: PEF20954HTV1.1; SP000007505

1.3
The SIDEC can be used for various applications.
Figure 2
Figure 2
In this interworking unit there are two INFINEON products connected to the SIDEC. The
FALC 56 serves as a frame and line interface component whereas the IWE8 PXB 4220
operates as an interworking element.
The delays of networks and the inter working units are usually long. In the application
above the SIDEC cancels the echo that is generated by reflection on the near end side
and heard by the far end speaker. The SIDEC can cancel end echo paths (SDH or PDH
Network on near end side) up to 128 ms. For details see
For the set up illustrated in
ATM Application" is available.
Data Sheet
SDH or PDH
Network
to
Typical Applications
Figure 5
SDH:
PDH:
ATM:
SIDEC in a Circuit Emulation Service Carried over ATM
Synchronous Digital Hierarchy
Plesiochronous Digital Hierarchy
Asynchronous Transfer Mode
PEB 2256
display typical examples.
FALC
56
PCM30
Figure 2
PEB 20954
SIDEC
IWU
a application note "Using SIDEC in a Voice over
PCM30
PXB 4220
16
IWE8
FALC:
IWE8:
IWU:
Network
Frame and Line Interface Component
Interworking Element (handles up to 8 PCM30 lines)
Internetworking Unit
ATM
Figure
IWU
17.
SDH or PDH
Rev. 2, 2004-07-28
Network
Introduction
SIDEC in a CES
PEB 20954
PEF 20954