DESCRIPTION
The DS2154 Enhanced Single-Chip Transceiver (ESCT) contains all of the necessary functions for connection to E1 lines. The device is an upward compatible version of the DS2153 Single-Chip Transceiver.

FEATURES
● Complete E1(CEPT) PCM-30/ISDN-PRI transceiver functionality
● Onboard long- and short-haul line interface for clock/data recovery and waveshaping
● 32-bit or 128-bit crystal-less jitter attenuator
● Generates line build outs for both 120Ω=and 75Ω=lines
● Frames to FAS, CAS, and CRC4 formats
● Dual onboard two-frame elastic store slip buffers that can connect to asynchronous backplanes up to 8.192 MHz
● 8-bit parallel control port that can be used directly on either multiplexed or non-multiplexed buses
● Extracts and inserts CAS signaling
● Detects and generates Remote and AIS alarms
● Programmable output clocks for Fractional E1, H0, and H12 applications
● Fully independent transmit and receive functionality
● Full access to both Si and Sa bits aligned with CRC multiframe
● Four separate loopbacks for testing functions
● Large counters for bipolar and code violations, CRC4 codeword errors, FAS errors, and E bits
● Pin compatible with DS2152 T1 Enhanced Single Chip Transceiver
● 5V supply; low power CMOS
● 100-pin 14mm2 body LQFP package