XRT95L34IV

áç MARCH 2002 PRELIMINARY XRT95L34 REV. P1.0.0 OC-12/STM-4, QUAD OC-3/STM-1 POS/ATM FRAMER WITH INTEGRATED CDR’S GENERAL DESCRIPTION The XRT95L34 is an OC-12/STM-4, Quad OC-3/ STM-1 POS/ATM Framer with integrated CDR’s. ATM direct mapping and cell delineation are supported, so are packets (PPP) over SONET for POS mapping and frame processing. The XRT95L34 contains an integral SONET framer which provides framing and error accumulation in accordance with ANSI/ITU-T specifications. The configuration of this device is through internal registers accessible via an 8-bit parallel, memory mapped, microprocessor interface. APPLICATIONS Edge and WAN ATM Switches IP Routers, Packet Switches and Hubs Multi-protocol Switches FEATURES A single chip solution for ATM UNI and packet over SONET Provides the highest level of protection switching flexibility for up to 1:14 protected OC-3/STM-1 ports. Provides quad serial OC-3/STM-1 interfaces with integrated CDR, compatible with industry standard optical modules. Provides serial OC-12/STM-4 interfaces with integrated CDR, compatible with industry standard optical modules. Supports the mappings for any standard combination of STS-12c/AU-4c or STS-3c/AU4. Provides four 8-bit busses on the line side running at 19.44 MHz to connect OC-12 framers through a parallel interface or aggregate four low speed OC-3 devices into an OC-12 line. Supports both SONET and SDH on all interfaces. SONET/SDH is programmable per interface. Ter...