DS2143Q

DS2143/DS2143Q E1 Controller www.dalsemi.com 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VDD TSYNC TLINK TLCLK INT1 INT2 RLOS/LOTC TCHBLK RCHBLK LI_CS LI_CLK LI_SDI SYSCLK RNEG RPOS RSYNC RSER RCHCLK RCLK RLCLK 40-Pin DIP (600-mil) TNEG TPOS TCHCLK TSER TCLK VDD TSYNC TLINK TLCLK INT1 INT2 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 BTS RD(DS) NC 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 5 4 3 2 1 44 43 42 41 40 39 38 37 36 35 44-PIN PLCC 34 33 32 31 30 29 28 RLOS/LOTC TCHBLK RCHBLK LI_CS LI_CLK LI_SDI NC NC SYSCLK RNEG RPOS DESCRIPTION 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 c...