PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 18

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

Semiconductor Group
1
Version 5.3 of the PEB/F 2091 (IEC-Q), is an optimized version of the IEC-Q, which
features all functions needed for building basic rate digital subscriber line systems. It
complies to all international and all important national standards (e.g. ITU, ANSI, ETSI,
CNET, BT). The IEC-Q holds the Bellcore approval for "Layer 1 ISDN Basic Access
Digital Subscriber Line Transceivers", including all objectives, and it is the de facto
industrial standard for these applications.
The IEC-Q is one building stone of the Siemens U transceiver product family for the
2B1Q line code, which is divided into three groups of products
• IEC AFE/DFE-Q (PEB 24902 / PEB 24911)
• NTC-Q and INTC-Q (PEB 8091/PEB8191)
• IEC-Q
The IEC AFE/DFE kit is optimized to interface four metallic lines in the LT allowing cost
effective design for line cards in the switch and in wireless local loop applications (LT).
The NTC-Q is a one chip solution for NT1 systems offering all needed level 1 functions
for this application. The functions of the NTC-Q are a subset of these of the INTC-Q,
which offers additional features for comfortable and cost effective implementation of
intelligent NTs.
The IEC-Q provides numerous features supporting comfortable and cost effective
implementation of
• Digital added main line (DAML) PCM-2 and PCM-4 applications
• Repeater applications
• Wireless local loop applications (base station)
• TE applications
• NT-PBX and Access Network applications
From the technical point of view, it can also be used in standard NT and LT applications.
The IEC-Q allows access to the U-interface via IOM
interface or a combination of both. It also provides means to support monitoring
transmission quality, monitoring power supply, activation and deactivation procedures
for special modes, performing maintenance tests and other features.
Version 5.3 is available in three different packages and in two operational temperature
ranges. It offers
• New features to support applications gaining increasing importance in the
• Improved electrical behavior and functions (power consumption, ESD immunity,
• Full compatibility to previous IEC-Q versions
marketplace, e.g. wireless local loop, repeaters, dual mode S and U terminals and PC
cards,
dynamic characteristics of the microprocessor interface) as well as
Overview
18
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-2 interface, microprocessor
Data Sheet 01.99
PEB 2091
PEF 2091
Overview