PM5319-NGI

Telecom Overview

The PM5319-NGI is a SONET/SDH interface component designed for 622 and 155 Mbit/s applications. It features a software-selectable interface rate between OC-3/STM-1 (155.52 Mbit/s) and OC-12/STM-4 (622.08 Mbit/s). The device integrates clock recovery and synthesis, generating line clocks from a 77.76 MHz reference. It provides three DS3/E3/EC-1 interfaces with flexible mapping capabilities into STS-1, AU-3, or TU-3 structures. The component utilizes a 15x15mm 196-ball CABGA package and supports an industry-standard 8-bit, 77.76 MHz telecombus interface.

Telecom Feature Summary

• Integrated clock recovery and synthesis allows direct interfacing to low-cost optical transceivers while complying with Bellcore, ANSI, and ITU jitter specifications.
• Flexible three-port DS3/E3/EC-1 interface supports clear channel mapping/demapping and includes fully digital desynchronizers requiring no external PLLs.
• Full access to all SONET/SDH transport overhead bytes, path overhead bytes, and DCC bytes via dedicated serial ports.
• Provides Time Slot Interchange (TSI) for flexible mixing of traffic from the SONET/SDH and DS3/E3/EC-1 interfaces.

Telecom Applications

• SONET/SDH Add/Drop Multiplexers
• Terminal Multiplexers
• Customer Premise Equipment
• Media Gateways
• Digital Cross-Connects

Telecom Procurement Notes

Verify the specific suffix 'NGI' against official PMC-Sierra documentation to confirm exact temperature range, lead-free status, and packaging configuration. Ensure compatibility with required system voltage levels and interface protocols before procurement.

Telecom Selection Notes

Select this component for designs requiring high-order path processing and alignment at the STS-1/AU-3/TU-3 level. Consider its multi-drop capability for redundancy or multiplexing purposes in telecombus architectures.

Telecom Part Context

The PM5319 belongs to the ARROW 622 product family from PMC-Sierra. It serves as a specialized interface solution for telecommunications networks, bridging SONET/SDH standards with DS3/E3/EC-1 client signals.

Telecom Replacement Considerations

PM5320 is a related component within the same ecosystem, typically associated with lower speed ARROW 155 applications. Verify functional equivalence and pinout compatibility if substituting.

Telecom FAQ

What are the supported interface rates?

The interface rate is software selectable between OC-3/STM-1 (155.52 Mbit/s) and OC-12/STM-4 (622.08 Mbit/s).

Does the device require external PLLs for desynchronization?

No, the integrated fully digital desynchronizers do not require external PLLs for standards-compliant operation.

How is the device packaged?

It is available in a 15x15mm 196 ball CABGA package.