PEF 22558 E V1.1-G

Telecom Overview

The PEF 22558 E V1.1-G is an OctalFALM eight-channel E1/T1/J1 framer and Line Interface Unit (LIU) manufactured by Infineon Technologies. It integrates eight independent long-haul or short-haul LIUs, a clock generation unit accepting reference clocks from 1.02 MHz to 20 MHz, and 24 HDLC controllers with 128-byte FIFO buffers. The device supports dual voltage power supplies of 1.8 V and 3.3 V, operates within a temperature range of -40°C to 85°C, and utilizes a 17 x 17 mm PG-LBGA-256 package with a 1.0 mm ball pitch.

Telecom Feature Summary

• Integrates eight independent software-programmable E1/T1/J1 line interface units with integrated analog switches for impedance matching or protection switching.
• Features a crystal-less wander and jitter attenuation/compensation unit compliant with TR 62411 and ETS-TBR 12/13 standards.
• Includes ITU-T G.704 frame alignment/synthesis capabilities supporting multiple programmable frame formats including E1 double/CRC4 and T1 F4/F12/F72.
• Provides 24 HDLC controllers with microprocessor or system interface serial access, supporting signaling system #7 and ANSI T1.403 bit-oriented messages.

Telecom Applications

• Wireless base stations
• Routers and multi-service access platforms
• Digital loop carriers and remote access servers/concentrators
• SONET/SDH add/drop multiplexers

Telecom Procurement Notes

Verify the specific revision suffix 'V1.1-G' against official Infineon documentation to confirm manufacturing status and compliance details. Confirm package availability and lead times directly with authorized distributors or the manufacturer, as component lifecycle stages may affect procurement options.

Telecom Selection Notes

Select this component for designs requiring high-density E1/T1/J1 connectivity in a compact form factor. Ensure the design accommodates the 1.0 mm ball pitch on the PG-LBGA-256 package and provides the necessary dual voltage power rails. Verify that the host processor supports the required Intel/Motorola 8/16-bit or SPI/SCI interfaces.

Telecom Part Context

This part belongs to the OctalFALC family, which extends the functionality of the QuadFALC series to support eight channels. It is designed to reduce board space and bill of materials for network equipment manufacturers by integrating framing, LIU, and HDLC functions into a single highly flexible IC.

Telecom Replacement Considerations

Check for updated revisions within the PEF 22558 E series or compatible devices from the same product family. Consult Infineon's official obsolescence notices or replacement guides to identify qualified alternative components if this specific variant is discontinued.