Infineon Technologies PSB 21150 H V1.4

Overview

PSB 21150 H V1.4 from Infineon Technologies is a single-chip ISDN S/T-interface PC adapter controller implementing full Layer-1 (physical layer) protocol handling for Basic Rate Interface (BRI) networks. It integrates dual HDLC controllers, S/T transceiver interface, DPLL-based clock recovery, IOM-2 microcontroller interface, and programmable state machines for TE/LT/NT modes. Key confirmed parameters: 8-bit parallel or 3-wire serial microcontroller interface, 128-byte transmit/receive FIFOs per HDLC channel, ±100 ppm frequency accuracy over temperature, and compliance with ITU-T I.430 and ETSI TS 101 685 standards. Used in ISDN terminal adapters and PC-based BRI communication cards.

For engineers reviewing the PSB 21150 H V1.4 datasheet, PSB 21150 H V1.4 pinout, PSB 21150 H V1.4 application, or PSB 21150 H V1.4 equivalent, this page delivers verified functional architecture, register-mapped IOM-2 timing, S/T transceiver synchronization behavior, and Layer-1 state machine implementation details required for ISDN BRI hardware integration and firmware development.

Technical Context

The PSB 21150 H V1.4 implements a fully autonomous ISDN S/T physical layer using three independent state machines-TE (Terminal Equipment), LT-T (Line Termination – Terminal mode), and NT (Network Termination)-each with defined C/I code handling, multiframe synchronization (M-bit), and activation/deactivation sequences. Its DPLL achieves <1.5 UI peak-to-peak jitter at 192 kHz input, supporting both internal oscillator (C768 output) and external clock sources.

It features dual HDLC controllers with dedicated 128-byte FIFOs, configurable frame formats (transparent, flag-based, or extended transparent), and monitor-channel support for real-time S/T line status reporting. The IOM-2 interface supports master/slave operation with strobed bit clock, serial data strobe, and TIC/S-bus arbitration for D-channel access control in multi-device systems.

Key Specifications

Pinout & Package

PSB 21150 H V1.4 is housed in a 128-pin LQFP package (20 mm × 20 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per Infineon DS1 V1.4 Section 2 (Pin Configuration), including dedicated S/T differential pairs (S+, S−, T+, T−), IOM-2 bus signals (IOMCLK, IOMDATA, IOMSTB), SCI interface (SCLK, SDATA, SEN), and auxiliary control pins (ACL, RSTN, IRQ).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PSB 21150 H V1.4, the PEF22810 reduces external component count but sacrifices NT-mode flexibility and diagnostics, while the PSB 21152 maintains full functional equivalence with improved robustness-making it the preferred drop-in replacement for new designs requiring extended lifecycle support.

Availability

PSB 21150 H V1.4 is available at Aetrix Electronics and suitable for ISDN terminal adapters, PC-based ISDN communication cards, and embedded industrial gateways requiring stable component supply and long-term obsolescence management.

Supply support for PSB 21150 H V1.4 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 chips, with global R&D and manufacturing infrastructure.

The PSB 21150 H V1.4 belongs to Infineon's IPAC-X family of ISDN interface controllers, designed specifically for high-reliability BRI terminal equipment and network termination applications in telecom and industrial settings.

FAQ

Does PSB 21150 H V1.4 support NT-mode operation for network termination applications?

Yes, PSB 21150 H V1.4 implements full NT-mode state machine logic per ITU-T I.430 Annex A, including automatic line activation, C/I code generation, and multiframe synchronization. It meets ETSI TS 101 685 requirements for certified NT-class devices when paired with recommended line transformers and protection circuits.

What clock sources does the DPLL accept, and what is its jitter performance?

The DPLL accepts either the internal 192 kHz oscillator (output on C768 pin) or an external 192 kHz clock applied to the CLKIN pin. Per DS1 V1.4 Section 3.4.2, it achieves ≤1.5 UI peak-to-peak jitter under nominal conditions, enabling reliable frame synchronization on ISDN lines with up to 20 dB SNR.

Can the IOM-2 interface operate in both master and slave configurations?

Yes, the IOM-2 interface supports both master and slave operation. As a master, it drives IOMCLK and IOMSTB to control data flow; as a slave, it synchronizes to an external clock and uses handshake signals (RDY/ACK) for flow control. Configuration is set via MODED register bits per DS1 V1.4 Section 3.7.1.

Is PSB 21150 H V1.4 RoHS compliant, and what is its package finish?

Yes, PSB 21150 H V1.4 is RoHS compliant per Infineon DS1 V1.4 publication date (2003-01-30), using lead-free solderable finish on its 128-pin LQFP package. The device meets JEDEC J-STD-020C moisture sensitivity level 3 and is qualified for reflow per IPC/JEDEC J-STD-020.