PM5315

PMC-Sierra,Inc. Preliminary PM5315 SPECTRA-2488 SONET/SDH Payload Extractor/Aligner for 2488 Mbit/s FEATURES Monolithic SONET/SDH Payload Extractor/Aligner for use in interface applications, operating at serial interface speeds of up to 2488 Mbit/s: single STS-48c (STM-16/AU4-16c); single STS-48 (STM-16/AU44c/AU4/AU3/TU3); quad STS-12c (STM-4/AU4-4c); quad STS-12 (STM4/AU4/AU3/TU3). In single STS-48/STM-16 mode, supports a duplex 16-bit 155.52 MHz differential PECL line side interface for direct connection to external clock recovery, clock synthesis and serializer-deserializer components. In quad STS-12/STM-4 mode, supports four duplex 8-bit 77.76 MHz TTL compatible line side interfaces for direct connection to external clock recovery, clock synthesis and serializer-deserializer components. Provides termination for SONET Section, Line and Path overhead or SDH Regenerator Section, Multiplexer Section and High Order Path overhead. In single STS-48/STM-16 mode provides a 32-bit 77.76 MHz ADD and DROP TelecomBus. In quad STS-12/STM-4 mode provides four 8-bit 77.76 MHz ADD and DROP TelecomBus Interfaces. Maps SONET/SDH payloads to system timing, accommodating plesiochronous timing offsets between the line and system timing references, through pointer processing. The entire SONET/SDH transport and path overheads are extracted to and inserted from dedicated pins. Frames to the SONET/SDH receive stream and inserts framing bytes and STS identification into...