PXB 4221 E V3.4-G

Overview

The PXB 4221 E V3.4-G is an interworking element designed for wired communications, specifically handling eight E1/T1 lines. It operates as part of the IWE8 family and facilitates conversion between ATM cells and TDM streams. The device supports both ATM mode and AAL (ATM Adaptation Layer) modes, including unstructured and structured Circuit Emulation Service (CES). It integrates internal clock recovery circuits to maintain synchronization across interfaces.

Feature Summary

• Supports eight E1 or T1 line connections
• Handles ATM cell segmentation and reassembly
• Integrates Internal Clock Recovery Circuit (ICRC)
• Provides UTOPIA and Generic Framer Interfaces

Applications

• Line card implementations in telecom systems
• Echo canceller architectures
• ATM-to-TDM interworking nodes

Procurement Notes

Verify component authenticity through official Infineon channels. Confirm package integrity for the 256-BGA configuration. Ensure compatibility with existing system voltage levels and interface protocols before integration.

Selection Notes

Select this model when eight-channel E1/T1 interworking is required. Compare against PXB 4219E and PXB 4220E variants based on specific port count and feature set requirements. Verify version 3.4 compliance for intended application standards.

Part Context

This component belongs to the IWE8 series of interworking elements. It shares functional similarities with the PXB 4219E and PXB 4220E models but is distinguished by its specific support for eight E1/T1 lines within the Version 3.4 architecture.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate PXB 4219E or PXB 4220E only if pinout and functional differences are verified acceptable.