PEF2256HV2.2: Infineon's Advanced E1/T1/J1 Single-Chip Framer and Line Interface Solution

In the realm of telecommunications and network infrastructure, the efficient and reliable transport of data over digital transmission lines is paramount. The PEF2256HV2.2 from Infineon Technologies stands as a highly integrated, single-chip solution designed specifically for E1, T1, and J1 line interfaces, combining framer functionality with a sophisticated line interface unit (LIU). This device is engineered to meet the stringent requirements of modern access networks, enterprise systems, and central office equipment.

At its core, the PEF2256HV2.2 is a comprehensive framer and LIU that supports a full duplex E1 (2.048 Mbit/s) or T1/J1 (1.544 Mbit/s) data stream. Its integration level is a key advantage, as it eliminates the need for numerous external components, thereby simplifying board design, reducing overall system cost, and enhancing reliability. The on-chip LIU handles all critical analog functions, including hybrid termination, waveform shaping, and adaptive equalization, ensuring robust performance over extended distances and under varying line conditions.

A standout feature of this solution is its advanced jitter attenuation and clock recovery capabilities. The device employs a high-performance digital phase-locked loop (DPLL) to minimize jitter, which is crucial for maintaining signal integrity and synchronization across the network. This makes it exceptionally suitable for applications where timing precision is non-negotiable.

Furthermore, the PEF2256HV2.2 offers extensive system control and diagnostic features. It provides detailed performance monitoring, error detection, and alarm generation in compliance with international ITU-T and ANSI standards. Engineers can leverage its programmability to fine-tune parameters for specific operational environments, ensuring optimal performance. Its low-power operation and support for multiple voltage levels also make it an ideal choice for power-sensitive and space-constrained designs.

ICGOODFIND: The Infineon PEF2256HV2.2 is a powerful, all-in-one solution that significantly simplifies the design of digital line interface cards. Its high integration, robust performance, and comprehensive feature set make it a superior choice for developers building next-generation networking equipment for global markets.

Keywords: E1/T1/J1 Framer, Line Interface Unit (LIU), Jitter Attenuation, Adaptive Equalization, Telecommunications IC.