PSB21911 データシートの表示（PDF） - Siemens AG

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PSB21911

ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE

Siemens AG 

ISDN Echocancellation Circuit for Terminal

Applications

IEC-Q TE

PSB 21911

Version 5.2

CMOS

1.1

Features

• ISDN U-transceiver with IOM-2 and optional micro-

processor interface

• Compatible to NT modes and TE mode of

PEB 2091 IEC-Q V5.1

• Perfectly suited for terminal and TA applications

• U-interface (2B1Q) conform to ANSI T1.601, ETSI

ETR 080 and CNET ST/LAA/ELR/DNP/822:

– Meets all transmission requirements on all ANSI,

ETSI and CNET loops with margin

– Conform to British Telecom’s RC7355E

– Compliant with ETSI 10ms micro interruptions

• IOM-2 interface for connection of e.g. ISAC-S,

SICOFI-2/4TE, ARCOFI, ITAC, HSCX-TE, ISAR,

IPAC, 3PAC

• Pin compatible to version 4.4 in the P-LCC-44

package

P-LCC-44

T-QFP-64

In µP mode:

• Parallel or serial microprocessor interface and watchdog

• µP access to B-channels, D-channel and intercommunication channels

• µP access to IOM-2 Monitor-channels and C/I-channels

• Adjustable microcontroller clock source between 0.96MHz and 7.68MHz

• Selection between Bit clock (BCL) and Data clock (DCL)

• Supports synchronization of basestations in cordless applications (e.g. RITL)

• Supports D-channel arbitration with ELIC linecard (e.g. PBX)

In all modes:

• Single 5 Volt power supply

• Low power CMOS technology with power down mode

Semiconductor Group

9

11.97

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