DS2143Q - Dallas Semiconducotr

DS2143Q E1/ISDN-PRI framing transceiver

The DS2143 is a comprehensive, software-driven E1 framer. It is meant to act as a slave or coprocessor to a microcontroller or microprocessor. Quick access via the parallel control port allows a single micro to handle many E1 lines. The DS2143 is very flexible and can be configured into numerous orientations via software. The software orientation of the devi.

Features

E1/ISDN-PRI framing transceiver Frames to CAS, CCS, and CRC4 formats Parallel control port Onboard two frame elastic store slip buffer Extracts and inserts CAS signaling bits Programmable output clocks for fractional E1 links, DS0 loopbacks, and drop and insert applications Onboard Sa data link support circuitry FEBE E-Bit detection, counting and generation Pin-compatible with DS2141A T1 Controller 5V supply; low power (50 mW) CMOS Available in 40-pin DIP and 44-pin PLCC (DS2143Q) PIN ASSIGNMENT TCLK TSER TCHCLK TPOS TNEG AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 BTS RD(DS) CS ALE(AS) WR(R/W) RLINK VSS.