FEATURES
• Monolithic single channel STS-192/STM-64 or quad channel STS-48/STM-16 SONET/SDH Payload extractor/aligner.
• Designed for use in interface applications operating at serial interface speeds of up to OC-192 rates:
   • single STS-192c (STM-64/ AU4-64c);
   • single STS-192 (STM-64/AU4- 16c/AU4-4c/AU4/AU3) channelized to STS-1;
   • quad STS-48c (STM-16/AU4-16c);
   • quad STS-48 (STM-16/ AU4-4c/AU4/AU3);
   • pointer processing for STS-1, STS-3c, STS-12c, STS-24c, STS- 48c, and STS-192c traffic.
• In single STS-192/STM-64 mode, supports a duplex 16-bit 622 MHz LVDS line side interface for direct connection to external clock recovery, clock synthesis and serializerdeserializer components.
• In quad STS-48/STM-16 mode, supports four duplex 4-bit 622 MHz LVDS line side interfaces for direct connection to external clock recovery, clock synthesis and serializerdeserializer components.
• Standard OIF SFI-4 (16 x 622 Mbit/s) line side interface.
• Each channel provides termination for SONET Section, Line and Path overhead or SDH Regenerator Section, Multiplexer Section and High Order Path overhead.
• Provides a 16-bit 622 Mbit/s 8B10B encoded (777.7 MHz) ADD and DROP serial TelecomBus interface for grooming a single STS-192/STM-64 stream.
• Provides four 4-bit 622 Mbit/s 8B10B encoded (777.7 MHz) ADD and DROP serial TelecomBus interfaces for grooming four STS-48/STM-16 streams.
• Maps SONET/SDH payloads to system timing, accommodating plesiochronous timing offsets between the line and system timing references, through pointer processing.
• Provides STS-12 cross-connect capability for grooming traffic at the ADD and DROP TelecomBus interface.
• The entire SONET/SDH transport overhead is extracted to and inserted from dedicated pins. Path BIP-8 error counts are extracted to dedicated pins.
• Frames to the SONET/SDH receive stream, inserts framing bytes and STS identification into the transmit stream, and processes or inserts the transport overhead.
• Interprets or generates the STS (AU) pointer bytes (H1, H2, H3), extracts or inserts the synchronous payload envelope(s) and processes or inserts the path overhead.
• Supports Automatic Protection Switching (APS):
   • Ring control port communication of path REI and path RDI alarms;
   • Filters the APS channel (K1,K2) bytes into internal registers; inserts the APS channel into the transmit stream.
• Supports line loopback from the line side receive stream to the transmit stream and diagnostic loop-back from an ADD TelecomBus interface to a DROP TelecomBus interface.
• Provides a standard 5 signal IEEE 1149.1 JTAG test port for boundary scan board test purposes.
• Provides a generic 16-bit microprocessor bus interface for configuration, control, and status monitoring.
• Low power, 1.8 V CMOS core logic with 3.3 V CMOS/TTL digital inputs and digital outputs (2.5 V tolerant).
• Industrial temperature range (-40 °C to +85 °C).
• 1152 pin FCBGA package.

APPLICATIONS
• Channelized STS-192/STM-64 or 4 x STS-48/STM-16 Interfaces for:
   • Optical cross connects;
   • Digital cross connects;
   • Router and switch line cards;
   • ADM aggregate cards for TDM and multiservice applications;
   • Terminal multiplexers;
   • SONET/SDH test equipment.