T1 Single Chip Transceiver

The DS2151Q is a first-generation line interface unit for T1 lines that that pioneered single-chip integration of multiple functions, combining long- and short-haul and framing functionality with dual elastic stores and an 8-bit parallel control port. It continues to provide an adaptable interface unit at both network and central office interfaces.

The DS2151Q meets T1 specifications, including ANSI T1 403-199X, AT&T TR 6241 (12-90), and ITU G.703, G.704 G.706, G.823, and 1.431. Under processor control, the user can access the 64 8-bit internal registers to configure the DS2152 to suit the application.

* Complete DS1/ISDN-PR1 transceiver

* Short- and long-haul trunk capability

* Independent send and receive functions

* 32-bit or 128-bit jitter attenuator

* DSX-1 and CXU line build-outs

* D4, ESF, and SLC-96R framing

* Dual onboard elastic buffers connect to backplanes up to 8.192MHz

* Programmable output clocks for Fractional T1

* 8-bit parallel control port can be muxed or nonmuxed

* Extracts/inserts robbed-bit signals

* Detects/generates yellow and blue alarms

* Onboard FDL support circuitry

* Generates/detects CSU loop codes

* ANSI one's density monitor/enforcer

* Path and line error counters, including BPV, CV, CRC6, and framing bit errors

* Pin-compatible with DS2153Q

* Operating ranges:

* 5.0V

* 0°C to +70°C (DS2151Q)

* -40°C to +85°C (DS2151QN)