DS2182A

Features:

Performs framing and monitoring functionsSupports Superframe and Extended Super-frame 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 config-uration, control and status monitoring
Burst mode allows quick access to countersfor status updates
Automatic counter reset feature
Single 5V supply; low-power CMOS tech-nology
Available in 28-pin DIP and 28-pin PLCC
The DS2182A is upward-compatible fromthe original DS2182The updated DS2182A includes the followingchanges 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 


Pinout




Specifications

Voltage on Any Pin Relative to Ground..........-0.1V to +7.0V
Operating Temperature .....................................-0°to 70
Storage Temperature .................................--55to +125
Soldering Temperature ...........-..........-260for 10 seconds


Description

The DS2182A T1 Line Monitor Chip is a monolithic CMOS device designed to monitor real-timeperformance on T1lines. The DS2182A frames to the data on the line, counts errors, and suppliesdetailed information about the status and condition of the line. Large on-board counters allow theaccumulation of errors for extendedperiods, which permits a single CPU to monitor a number of T1lines. Output clocks that aresynchronized to the incoming data stream are provided for easy extraction ofS-Bits, FDL bits, signaling bits, and channel data. The DS2182A meets the requirements of ANSIT1.231.