PEF 2256 H V2.2

Telecom Overview

The PEF 2256 H is an E1/T1/J1 framer and Line Interface Unit (LIU) transceiver manufactured by Infineon Technologies. It is housed in a P-MQFP-80 package. The device serves as the core component of the EASY2256 evaluation system, which integrates a C165UTAH 16-bit controller, 1 MByte SRAM, and 1 MByte Flash EEPROM. The hardware supports flexible clocking via a single crystal oscillator and includes ITU-T K.20/21 approved line interface circuitry with RJ-45 and BNC connectors for standard test equipment connectivity.

Telecom Feature Summary

• Supports E1, T1, and J1 standards including pulse template, jitter, and receiver return loss specifications.
• Integrates ITU-T K.20/21 approved line interface circuitry for optimized generic platform performance.
• Features a highly flexible programmable PCM/system interface accessible through dedicated test connectors.
• Enables software configuration and debugging via RS-232 or USB connections using the WinEASY program.

Telecom Applications

• Sophisticated E1/T1/J1 framer applications
• Line Interface Unit (LIU) implementations
• Telecommunications environment performance demonstration

Telecom Procurement Notes

Verify the specific ordering code for the standalone IC versus the complete evaluation kit. The provided documentation references the EASY 2256 evaluation system, which includes the board, CD-ROM, and software. Confirm package availability and lifecycle status directly with Infineon sales offices, as detailed supply chain data is not included in the tool brief.

Telecom Selection Notes

Select the PEF 2256 H when designing systems requiring certified E1/T1/J1 framing and line interfacing. The device is suitable for applications needing ITU-T K.20/21 compliance without external resistor switching for impedance matching. Utilize the associated C165UTAH controller and API drivers for rapid integration and SSM support.

Telecom Part Context

The PEF 2256 H belongs to the FALC®56 family of transceivers. It is specifically designed for telecommunications infrastructure, providing integrated framing and line interface capabilities. The component is often evaluated using the EASY2256 system, which provides a reference design for system vendors developing compliant network equipment.

Telecom Replacement Considerations

Consult official Infineon documentation for direct substitutes. The QuadFALC® series is mentioned in the context of application wizards, suggesting potential functional similarities for multi-channel requirements, but specific cross-references must be verified against current product catalogs.

Telecom FAQ

What interfaces are available for downloading firmware and debugging?

The system supports download and debugging via two standard serial RS-232 PC interfaces and a high-speed USB interface.

Does the device support Synchronization Status Messages?

Yes, the FALC®56 API driver system supports Synchronization Status Messages (SSM).

How is the line interface impedance handled for different cable types?

The AFE meets return loss and impedance specifications for E1-120 Ω, E1-75 Ω, and T1-100 Ω cables without requiring resistor switching.