T1 Line Monitor Chip

Overview

Technical Documents

Ordering Info

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Status

Part Number	Status	Replacement	Explanation
DS2182A	This product is Not Recommended for New Designs.	DS26521	Please upgrade to the DS26521 for newer technology, smaller package, lower cost, and lower power consumption.

Description

The DS2182A T1 line monitor chip is a monolithic CMOS device designed to monitor real-time performance on T1 lines. The DS2182A frames to the data on the line, counts errors, and supplies detailed information about the status and condition of the line. Large on-board counters allow the accumulation of errors for extended periods, which permits a single CPU to monitor many T1 lines. Output clocks that are synchronized to the incoming data stream are provided for easy extraction of S-bits, FDL bits, signaling bits, and channel data. The DS2182A meets the requirements of ANSI T1.231.

Data Sheet

Download	Rev 1	(PDF, 504kB)
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Key Features

Performs Framing and Monitoring Functions
Supports Superframe and Extended Superframe Formats
Four On-Board Error Counters:
- 16-Bit Bipolar Violation
- 8-Bit CRC
- 8-Bit OOF
- 8-Bit Frame Bit Error
Indication of the Following:
- Yellow and Blue Alarms
- Incoming B8ZS Codewords
- 8 and 16 Zero Strings
- Change-of-Frame Alignment
- Loss of Sync
- Carrier Loss
Simple Serial Interface Used for Configuration, Control, and Status Monitoring
Burst Mode Allows Quick Access to Counters for Status Updates
Automatic Counter Reset Feature
Single 5V Supply; Low-Power CMOS Technology
Available in 28-Pin DIP and 28-Pin PLCC
Upward-Compatible from the Original DS2182
The DS2182A includes the following changes from the original DS2182:
- Ability to Count Excessive Zeros
- Severely Errored-Framing-Event Indication
- Updated AIS Detection
- Updated RCL Detection
- AIS and RCL Alarm Clear Indications

Diagram

Block Diagram

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Rev 1; 2003-12-01
This page last modified: 2009-10-22