DS2182A - Dallas Semiconducotr

DS2182A T1 Line Monitor

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 t.

Features

§ § Performs framing and monitoring functions Supports Superframe and Extended Superframe formats Four onboard 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 code words
  – 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 D.