Cortina Systems LXT6155 155 Mbps SDH/SONET/ATM Transceiver Datasheet The Cortina Systems LXT6155 155 Mbps SDH/SONET/ATM Transceiver (LXT6155 Transceiver) is a high speed fully integrated transceiver designed for 155 Mbps SDH/SONET/ATM transmission system applications. The LXT6155 Transceiver provides a LVPECL interface for fiber optics modules, and a CMI interface for coax cable drive. These circuits are implemented using Cortina Systems, Inc.s proven low power 3.3V CMOS analog and digital circuits. The transmitter incorporates a parallel-to-serial converter, a frequency multiplier PLL, CMI line encoders, and line interfaces for both coax cable and optical fiber. The receiver incorporates an adaptive equalizer, a clock recovery PLL, Loss of Signal (LOS) detector, CMI and NRZ decoders, a serial-to-parallel converter, and an SDH/SONET frame byte detector/aligner. At the system interface, the LXT6155 Transceiver offers both parallel 8-bit and serial differential interfaces. The LXT6155 Transceiver also operates in either Hardware stand-alone mode or Software mode. Software mode is controlled by a serial microprocessor (P) to program formats and operating/ test modes. Product Features Complies with: Two modes of operation: Bellcore* SONET GR-253 Microprocessor controlled software mode ITU-T G.703/813/958 STM1 Stand-alone hardware mode Two line interface formats: No external crystal required. A 19.44 MHz crystal is optional Fiber LVPECL NRZ Low power consumption (less than 760 mW Coax CMI typical) Transmit synthesizer PLL Operates from a single 3.3 V supply Receive clock recovery PLL 64 pin LQFP package Adaptive CMI equalizer Analog circuitry for transformer drive Programmable LOS function CMI encoder and decoder Serial/Parallel and Parallel/Serial conversion Byte alignment for SDH/SONET frames Applications OC3/STM1 SDH/SONET Cross Connects OC3/STM1 Short Haul Serial Links OC3/STM1 SDH/SONET Add/Drop Mux OC3/STM1 ATM/WAN Transmission Systems OC3/STM1 Transmission Systems OC3/STM1 ATM/WAN Access SystemsLXT6155 Transceiver Legal Disclaimer Datasheet 249612, Revision 7.0 14 Feburary 2007 INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH CORTINA SYSTEMS PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN CORTINA S TERMS AND CONDITIONS OF SALE OF SUCH PRODUCTS, CORTINA ASSUMES NO LIABILITY WHATSOEVER, AND CORTINA DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE AND/OR USE OF CORTINA PRODUCTS, INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Cortina products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications. CORTINA SYSTEMS, CORTINA, and the Cortina Earth Logo are trademarks or registered trademarks of Cortina Systems, Inc. or its subsidiaries in the US and other countries. Any other product and company names are the trademarks of their respective owners. Copyright 2001-2007 Cortina Systems, Inc. All rights reserved. Cortina Systems LXT6155 155 Mbps SDH/SONET/ATM Transceiver Page 2