Product Overview
The PM5336 ARROW 2488 device is a feature-rich, high capacity single-chip solution that enables optimized compact MSPPs and highly integrated central cross-connects or high fan-in tributary cards for chassis-based MSPPs, packet MSPPs, and ROADMs. The ARROW 2488 enables low chip count and power-efficient equipment designs with unprecedented scalability and carrier-grade reliability.
The ARROW 2488 consists of a SONET/SDH network interface and framer with integrated SERDES including full section, line, and high-order path processors, non-blocking memory-based high-order STS/AU and low-order VT/TU cross-connect, low-order VT/TU path processors, and a large number of expansion interfaces (both ESSI serial links and a Parallel TelecomBus interface). The SONET/SDH framer, high-order cross-connect, and low-order cross-connect support Message Assisted Protection Switching (MAPSTM), a mechanism that allows standards-based protection switching without software intervention.
BENEFITS
- Optimizes compact multi-port OC-48/STM-16 architectures, while allowing scalability to multi-port OC-192/STM-64 applications
- Integrates field-proven CHESSTM intellectual property, reducing development cycles through reuse of CHESS software base
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- Exceeds the requirement for 50 msec protection switching for up to 5376 tributaries using a fully hardware-based APS algorithm (MAPS)
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SONET/SDH NETWORK INTERFACE AND FRAMER (ARROW)
- Two groups of four SONET/SDH interfaces, each supporting two modes of operation:
- Quad OC-12/3/STM-4/1 mode (four interfaces operating at 622.08 Mbit/s or 155.52 Mbit/s, selectable per port)
- Single OC-48/STM-16 mode (one interface operating at 2488.32 Mbit/s)
- CML compatible serial interfaces to connect to optical transceivers
- Framing, high order pointer processing, alarm processing and overhead processing on all received network streams
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- Dedicated pins to extract/reinsert B3/N1 path overhead bytes for Tandem Connection Monitoring
- Per-framer connection ID message, allowing verification of high order path connectivity across single or multistage fabrics
- BLSR and MSSPRing protection switching with alarm processing, K-byte express, automatic payload configuration, and other features
- Insertion/extraction of transport overhead (TO) bytes from the line side interface
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STS/AU INTELLIGENT CROSS-CONNECT (TSE)
- High capacity, memory-based, HO cross-connect capable of switching at STS-1/AU-3 granularity
- Floating delay management
- One 32-bit or four 8-bit 77.76 MHz TelecomBus interfaces connecting to parallel TelecomBus framers and mappers
- Cross-connect implements HO MAPS algorithm to extract, filter and interpret line status code on a per STS-1 basis
- TOH byte insertion and extraction (99 TOH bytes per port)
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- Support for a set of active and standby configuration memory pages, permitting new switch settings to be updated in one page while the TSE operates from the control settings of the other page
- 2.5 Gbit/s to/from 622 Mbit/s interleaving/de-interleaving
- Muxing scheme enables different port asset allocations for different applications
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SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR (TUPP)
- Configurable, multi-channel, payload processor that aligns and monitors performance of the SONET virtual tributaries (VTs) or the SDH tributary units (TUs)
- Optionally monitors and terminates the path overhead of any legal mix of HO payloads in a SONET/SDH stream
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- Remaps the incoming transport frame, payload frame and tributary multi-frame alignment on the Receive side to the VT/TU Cross- Connect (WSE) frame and multi-frame alignments through low order pointer processing
- Drop/Add path of TUPP supports multiple SDH payload conversions
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VT/TU INTELLIGENT CROSS-CONNECT (WSE)
- Memory-based, LO cross-connect capable of switching at VT/TU granularity
- Accepts and switches SONET VT and SDH TU streams.
- All SONET virtual tributary types (VT1.5, VT2, VT3, and VT6)
- All LO SDH tributary unit types (TU11, TU12, TU2, and TU3)
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- Support for a set of active and standby configuration memory pages, permitting new switch settings to be updated in one page while the WSE operates from the control settings of the other page
- Cross connect implements the Low Order MAPS algorithm to extract, filter, and interpret the line status code on a per VT/TU basis
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INTERFACES
- ESSI links running at 2.488Gbit/s or 622Mbit/s (selectable per link)
- Optional differential clock output in 622 Mbit/s mode for interconnect to FPGAs with no clock recovery
- SONET/SDH B3/N1 path overhead interface for Tandem Connection Monitoring
- SONET/SDH HO (STS/AU) transport overhead interface
- SONET/SDH ring control/alarm port
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- Parallel TelecomBus interface with two functional modes:
- Single STS-48/STM-16 mode supporting a 77.76 MHz 32-bit TelecomBus interface
- Quad STS-12/STM-4 mode supporting four independent 77.76 MHz 8-bit TelecomBus interfaces
- Standard P1149.1 JTAG test port for boundary scan
- 32-bit microprocessor interface for status monitoring and configuration
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PACKAGE
Typical Applications include:
- Multi-port OC-48/STM-16 single-chip solution for compact MSPPs
- High fan-in, multi-rate SONET/SDH front-end for line cards for MSPPs, packet MSPPs, and ROADMs
- Centralized high-order and/or low-order cross-connect and pointer optical platforms
- One-armed low-order cross-connect and pointer processor for MSPPs
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