DS2182A
T1 Line Monitor Chip
Part Details
- 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
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.
Documentation
Data Sheet 1
Reliability Data 1
This is the most up-to-date revision of the Data Sheet.
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