|Category||Communication => ISDN|
|Description||Isdn Echocancellation Circuit For Terminal Applications Iec-q te|
|Company||Siemens (acquired by Infineon Technologies Corporation)|
|Datasheet||Download PSF21911 datasheet
ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE PSB 21911 Version 5.2 PSF 21911 Version 5.2
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Edition 11.97 Published by Siemens AG, HL TS, Balanstraße 73, 81541 München © Siemens AG 28.11.97. All Rights Reserved. Attention please! As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Siemens Office, Semiconductor Group. Siemens is an approved CECC manufacturer. Packing Please use the recycling operators known to you. We can also help you get in touch with your nearest sales office. By agreement we will take packing material back, it is sorted. You must bear the costs of transport. For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred. Components used in life-support devices or systems must be expressly authorized for such purpose! Critical components1 of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems2 with the express written approval of the Semiconductor Group of Siemens AG. 1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that device or system. 2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they fail, it is reasonable to assume that the health of the user may be endangered.
Overview.8 Features.9 Logic Symbol µP Mode.10 Logic Symbol Stand-Alone Mode.11 Pin Configuration.12 Pin Definitions and Functions.13 Microprocessor Bus Interface (Overview).21 System Integration.22 ISDN PC Adapter Card.22 ISDN Stand-Alone Terminal with POTS Interface.23 ISDN Feature Phone.24 ISDN-Modem PC Card.25 Functional Description.26 Operating Modes.26 Device Interface.30 IOM-2 Frame Structure.30 IOM-2 Command / Indication Channels.34 IOM-2 Monitor Channel.35 Activation/Deactivation IOM-2 Clocks.37 Superframe Marker.38 IOM-2 Output Driver Selection.38 Microprocessor Interface.39 Microprocessor Clock Output.39 Watchdog Timer.39 U-Transceiver.40 U-Frame Structure.42 EOC-Processor and MON-0.51 Maintenance (MON-1).54 Overhead Bits (MON-2).56 Local Functions (MON-8).59 State Machine Notation Rules.62 State Machine.63 C/I Codes.74 Layer 1 Loop-Backs.76 Analog Line Port.78 Access IOM-2 Channels.81 B-Channel Access.82 D-Channel Access.82 C/I Channel Access.83 Monitor Channel Access.84 S/G Bit and BAC Bit TE Mode.89
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