Infineon Technologies PEF 22554 E V2.1-G

Overview

PEF 22554 E V2.1-G from Infineon Technologies is a quad-channel E1/T1/J1 framer and line interface unit (LIU) with integrated analog switches, crystal-less jitter/wander compensation per TR-62411 and ETS-TBR 12/13, and programmable frame alignment for 2.048/1.544 Mbit/s. It supports four independent long/short-haul interfaces and operates across -40°C to +85°C in PG-LBGA-160 package. Used in Node B line cards and SDH/SONET ADMs.

For engineers reviewing the PEF 22554 E V2.1-G datasheet, PEF 22554 E V2.1-G pinout, PEF 22554 E V2.1-G application, or PEF 22554 E V2.1-G equivalent, key selection criteria include multi-standard software-programmable framing (E1 CRC/Double-frame, T1 ESF/F72), receiver sensitivity (-36 dB@772 kHz), clock input flexibility (1.02–20 MHz), and integrated impedance-matching analog switches for E1/T1/J1 termination.

Technical Context

The device integrates four independent framer+LIU channels, each with HDLC controllers (3 per channel, 128-byte FIFO), CAS signaling support, and PRBS generation/monitoring. Frame alignment complies with ITU-T G.704, and alarm handling includes LOS, AIS, and RAI detection/generation with CRC-4 performance monitoring.

Its clock generation unit accepts any reference from 1.02 MHz to 20 MHz and enables crystal-less jitter/wander attenuation per TR-62411. The analog front end includes programmable transmit pulse shaping and supports impedance matching via integrated analog switches-only in PG-LBGA-160 package-for E1 (75/120 Ω), T1 (100 Ω), and J1 (110 Ω).

Key Specifications

Pinout & Package

PEF 22554 E V2.1-G is housed in a PG-LBGA-160 package (15×15 mm, 1.0 mm ball pitch). Pin functions are defined per Infineon's official datasheet revision V2.1-G and include dedicated system bus, HDLC, CAS, JTAG, clock, and analog line interface terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar framer and line interface applications.

Compared with PEF 22554 HT and PEF 22553 E, the PEF 22554 E V2.1-G uniquely delivers quad-channel density with on-die impedance-matching switches in LBGA packaging-enabling higher port count per square centimeter and eliminating four external analog switch ICs in E1/T1/J1 line card designs.

Availability

PEF 22554 E V2.1-G is available at Aetrix Electronics and suitable for wireless base stations, SONET/SDH ADMs, and multi-service access platforms requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PEF 22554 E V2.1-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, industrial, and communications ICs, with global R&D and manufacturing operations.

The QuadFALC® product line was designed specifically for carrier-class E1/T1/J1 line card applications in wireless infrastructure, transport networks, and access systems-emphasizing integration, jitter resilience, and software configurability.

FAQ

What clock frequencies does PEF 22554 E V2.1-G support for its reference input?

The device accepts any reference clock between 1.02 MHz and 20 MHz, enabling crystal-less operation and compatibility with common system clocks such as 10 MHz, 12.288 MHz, or 19.44 MHz. This eliminates the need for dedicated crystal oscillators and simplifies clock tree design in multi-standard line cards.

Does PEF 22554 E V2.1-G support both E1 and T1 framing simultaneously?

Yes - each of the four channels can be independently configured for E1 (CRC or Double-frame), T1 (ESF, F72, or D4), or J1 framing via software registers. This allows mixed-interface line cards, such as three E1 ports and one T1 port, without hardware changes or external multiplexing.

Is the integrated analog switch available in all package variants?

No - the integrated analog switch for impedance matching and protection switching is only implemented in the PG-LBGA-160 package (PEF 22554 E). It is not present in the PG-TQFP-144 variant (PEF 22554 HT), which requires external analog switches for E1/T1/J1 termination.

How many HDLC controllers does PEF 22554 E V2.1-G provide, and what is their buffer depth?

The device integrates 12 HDLC controllers - three per channel - each with a dedicated 128-byte FIFO buffer. This enables concurrent handling of data, signaling (CAS/SS7), and management traffic without CPU polling or interrupt saturation in high-throughput line card applications.