Infineon Technologies PSB21150FV1.3

Overview

PSB21150FV1.3 from Infineon Technologies is an ISDN S/T-interface PC adapter controller IC implementing the full Layer-1 physical layer for Basic Rate Interface (BRI) ISDN terminals. It integrates dual HDLC controllers, S/T transceiver circuitry, DPLL-based clock recovery, IOM-2 microcontroller interface, and programmable state machines for TE/LT/NT modes. Key confirmed parameters: 8-MHz oscillator input, ±100 ppm frequency tolerance, 2.7–3.6 V supply, 128-pin PQFP package, and compliance with ITU-T I.430 and ETSI TS 101 632 standards. Used in ISDN terminal adapters, PC cards, and embedded BRI endpoint devices.

For engineers reviewing the PSB21150FV1.3 datasheet, PSB21150FV1.3 pinout, PSB21150FV1.3 application, or PSB21150FV1.3 equivalent, this page delivers verified functional architecture, IOM-2 timing constraints, S/T transceiver synchronization behavior, D-channel HDLC register mapping, and real-world deployment context for ISDN BRI endpoint design.

Technical Context

The PSB21150FV1.3 implements a fully integrated ISDN S/T physical layer with dual independent HDLC controllers-one for D-channel and one for B-channels-supporting both TE and NT operational modes. Its receive DPLL achieves jitter attenuation of ≤1.5 UI (unit interval) at 192 kHz input, and it supports multiframe synchronization via M-bit detection per ITU-T I.430 §6.3.2.

It features a programmable IOM-2 interface with strobed serial data transfer, monitor channel handshake logic, and TIC/S-bus priority arbitration for D-channel access. The transceiver block includes configurable line drivers, level detection with power-down control, and external protection circuitry support per ETSI EN 300 012-1.

Key Specifications

Pinout & Package

PSB21150FV1.3 is housed in a 128-pin Plastic Quad Flat Package (PQFP) with 0.4 mm lead pitch, thermally enhanced for sustained ISDN line driver operation. Pin functions are validated per Infineon DS1 V1.4 (2003), Section 2 "Pin Configuration".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ISDN S/T physical layer controller applications.

Compared with PSB21150FV1.3, the PSB21152FV1.3 offers measurable reliability gains without architectural change, while the Lantiq PEF22810 shifts design responsibility toward software-defined control-requiring firmware development but enabling feature-rich VoIP integration.

Availability

PSB21150FV1.3 is available at Aetrix Electronics and suitable for ISDN terminal adapters, PCMCIA communication cards, embedded industrial gateways, and legacy telecom infrastructure requiring stable component supply and long-lifecycle support.

Supply support for PSB21150FV1.3 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 ICs, and wired/wireless communications solutions.

The PSB21150FV1.3 belongs to Infineon's IPAC-X family of ISDN interface controllers, designed specifically for cost-sensitive, high-reliability BRI endpoint equipment requiring full Layer-1 compliance without external PHY components.

FAQ

What is the function of the ACL pin on PSB21150FV1.3?

The ACL (Activation Control Line) pin is an open-drain output that signals successful S/T interface activation in TE mode or line seizure in NT mode. It asserts low upon completion of the Layer-1 activation sequence defined in ITU-T I.430 Annex A, and remains active until deactivation or loss of line synchronization. Its timing is synchronized to the internal DPLL lock status and is electrically compatible with standard 3.3 V logic interfaces.

Does PSB21150FV1.3 support IDSL (ISDN Digital Subscriber Line)?

Yes, PSB21150FV1.3 explicitly supports IDSL operation through dedicated IOM-2 handler configuration (Section 3.7.1.2 of DS1 V1.4). It enables 144 kbps symmetric data transmission over ISDN U-interface wiring by reconfiguring the D-channel HDLC controller and disabling S/T framing checks. IDSL mode requires external line driver adaptation and is validated per ETSI TS 101 320.

How does the PSB21150FV1.3 handle clock recovery jitter?

The PSB21150FV1.3 uses a digital phase-locked loop (DPLL) with adaptive filtering to recover clock from the incoming S/T signal. Per DS1 V1.4 Section 3.4.2, its jitter attenuation is specified as ≤1.5 UI (unit interval) at 192 kHz input frequency under worst-case line conditions. This meets ITU-T G.823 plesiochronous network requirements and ensures reliable D-channel frame alignment in noisy environments.

Can PSB21150FV1.3 operate in both TE and NT modes simultaneously?

No. PSB21150FV1.3 operates in one of three mutually exclusive modes-TE (Terminal Equipment), LT-T/LT-S (Line Termination – Terminal/Subscriber), or NT (Network Termination)-selected at power-up via hardware pins (MODE0/MODE1) and configured in firmware. Mode switching requires reset and reinitialization; concurrent operation is not supported by the state machine architecture or register set.