DESCRIPTION
The DS2196 T1 Dual Framer LIU is designed for T1 transmission equipment. The DS2196 combines dual optimized framers together with a line interface unit. This combination allows the DS2196 user to extract and insert Facility Data Link (FDL) messages in the receive and transmit paths, collect line performance data and perform basic channel conditioning and maintenance. The DS2196 contains all of the necessary functions for connection to T1 lines whether they are DS1 long haul or DSX–1 short haul.

FEATURES
● Two full featured framers and a short / long haul Line Interface Unit (LIU) in one small package
● Based on Dallas Semiconductor’s SingleChip Transceiver family
● Two HDLC Controllers with 64-byte buffers that can be used for the FDL or for DS0 channels
● Supports NPRMs and SPRMs as per ANSI T1.403-1998
● Can be combined with a short/long haul LIU or a HDSL Modem Chip Set to create a low cost Office Repeater / NIU / CSU, or a HDSL1 / HDSL2 terminal unit with enhanced monitoring and Data Link Control
● Supports fractional T1
● Can convert from D4 to ESF framing and ESF to D4 framing
● 32–bit or 128–bit crystal–less jitter attenuator
● Can generate and detect repeating in-band patterns from 1 to 8 bits or 16 bits in length
● Detects and generates RAI-CI and AIS-CI
● Generates DS1 idle codes
● On-chip programmable BERT generator and detector
● All key signals are routed to pins to support numerous hardware configurations
● Supports both NRZ and bipolar interfaces
● Can create errors in the F-bit position and BERT interface data paths
● 8–bit parallel control port that can be used directly on either multiplexed or nonmultiplexed buses (Intel or Motorola)
● IEEE 1149.1 JTAG Boundary Scan
● 3.3V supply with 5V tolerant inputs & outputs
● 100-Pin LQFP (14 mm x 14 mm) Package