Texas Instruments TSB42AB4IPDT

Overview

TSB42AB4IPDT from Texas Instruments is an IEEE 1394a Link Layer Controller supporting DVB MPEG2, DirecTV™, and DV program streams per IEC 61883-4/2, with 8-Kbyte configurable FIFO, dual HSDI ports, and embedded DTCP cipher modules for content protection. It interfaces directly with TSB41LV0X/TSB41AXX PHYs and operates on a single 3.3-V supply in consumer AV systems.

For engineers reviewing the TSB42AB4IPDT datasheet, TSB42AB4IPDT pinout, TSB42AB4IPDT application, or TSB42AB4IPDT equivalent, key selection criteria include IEEE 1394a compliance, dual-HSDI support for simultaneous playback/recording, DTCP hardware acceleration, PID filtering capability, and TQFP-128 package compatibility with CE reference designs.

Technical Context

The TSB42AB4IPDT implements full-duplex IEEE 1394a link-layer functionality with automatic self-ID verification and bus manager support. Its dual High-Speed Data Interface (HSDI) ports operate in byte-wide or serial mode, each with dedicated M6 baseline cipher engines for DTCP encryption/decryption.

It supports concurrent transport of DVB, DirecTV™, and DV streams via eight independently configurable FIFO partitions, plus asynchronous data handling. MPEG2 time stamp-based release and hardware SHA-1/auth-key cipher acceleration are integrated for secure stream processing.

Key Specifications

Pinout & Package

TSB42AB4IPDT is housed in a 128-pin Plastic Quad Flatpack (TQFP-PDT), 14.0 mm × 14.0 mm body, 1.2 mm max height, with 0.4 mm pitch and JEDEC-standard tray packaging (90 units/tray). Moisture sensitivity level is MSL-3 (260°C peak reflow, 168 hr floor life).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IEEE 1394a link-layer controller applications.

Compared with TSB42AA4IPDT, the TSB42AB4IPDT adds mandatory DTCP security engines for premium content, while versus TSB42AB4PDT it maintains identical electrical and thermal specs-making it the preferred choice for volume CE designs requiring certified content protection at commercial temperature grade.

Availability

TSB42AB4IPDT is available at Aetrix Electronics and suitable for digital set-top boxes, DirecTV™ receivers, DV camcorder interfaces, and consumer AV hubs requiring stable component supply and long-term lifecycle support.

Supply support for TSB42AB4IPDT 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

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies, with leadership in industrial, automotive, and consumer electronics markets.

The ceLynx product line-including TSB42AB4IPDT-is designed specifically for high-volume consumer electronics applications requiring secure, low-latency IEEE 1394a transport of MPEG2, DV, and DirecTV™ streams.

FAQ

What is the primary function of the TSB42AB4IPDT in a consumer electronics system?

The TSB42AB4IPDT serves as an IEEE 1394a Link Layer Controller that manages isochronous and asynchronous data transport between physical layer devices and host processors. It handles DVB, DirecTV™, and DV streams per IEC 61883 standards, performs DTCP encryption/decryption using embedded hardware ciphers, and buffers data in its 8-Kbyte configurable FIFO. Its role is essential for secure, real-time AV streaming in set-top boxes and digital recorders.

Does the TSB42AB4IPDT support both transmit and receive operations simultaneously?

Yes, the TSB42AB4IPDT supports full-duplex operation via two independent High-Speed Data Interface (HSDI) ports. Each port can be configured for transmit or receive, enabling concurrent playback and recording-for example, decrypting a DirecTV™ stream while encrypting a DV recording. The dual M6 cipher engines and separate async acknowledge buffer ensure zero contention between data paths.

What package type and pin count does the TSB42AB4IPDT use?

The TSB42AB4IPDT uses a 128-pin Plastic Quad Flatpack (TQFP) with designation PDT, measuring 14.0 mm × 14.0 mm with 0.4 mm pitch and 1.2 mm maximum height. It is RoHS-compliant with NiPdAu lead finish and rated MSL-3 (260°C peak reflow, 168-hour floor life). The part marking on the top surface reads "TSB42AB4" followed by lot code "F731992D".

How does the TSB42AB4IPDT handle MPEG2 transport stream processing?

The TSB42AB4IPDT provides hardware-assisted MPEG2 transport stream handling including PID filtering, packet insertion, and time stamp–based release per IEC 61883-4. Its 8-Kbyte FIFO can be partitioned into up to eight independent buffers, allowing dedicated allocation for different PIDs or stream types. This offloads critical timing-sensitive tasks from the host processor and ensures deterministic latency for broadcast reception and multiplexing.

Is the TSB42AB4IPDT compatible with Texas Instruments' physical layer devices?

Yes, the TSB42AB4IPDT is explicitly designed to interface directly with TI's TSB41LV0X and TSB41AXX families of IEEE 1394a physical layer transceivers. It supports 100/200/400-Mbps signaling and uses the standard 8-bit parallel PHY_DATA[7:0] bus with handshake signals like PHY_CLK and PHY_STB. No level-shifting or protocol translation is required for interoperability.