Framer T1 5V 28-Pin PLCC

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.

• 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 DS21