TSB42AA4PDT

Controllers Overview

The TSB42AA4PDT is a ceLynx IEEE 1394-a Consumer Electronics Link Layer Controller manufactured by Texas Instruments. It supports DVB MPEG2 transport streams, DirecTV transport streams, DV program streams, and asynchronous data. The device features an 8K-byte FIFO configurable into eight independent Tx or Rx FIFOs. It includes embedded DTCP content protection with two M6 baseline ciphers, a hardware random number generator, SHA-1 secure hash algorithm, and authentication key cipher. It interfaces directly to 400-, 200-, and 100-Mbps physical layer devices via a high-speed data interface (HSDI) supporting byte-wide or serial modes.

Controllers Feature Summary

• Supports simultaneous transmission of multiple data types including DVB, DirecTV, DV, and asynchronous streams
• Integrates hardware-based DTCP encryption modules for secure content protection
• Features flexible 8K-byte FIFO architecture partitionable into eight independent buffers
• Provides direct interface compatibility with industry-standard physical layer devices

Controllers Applications

• Digital video broadcasting (DVB) set-top boxes requiring encrypted stream handling
• DirecTV receiver equipment utilizing specific transport stream protocols
• Digital video (DV) camcorders and recording devices over IEEE 1394 networks
• High-performance consumer electronics link layer controllers for audio/video playback and recording

Controllers Procurement Notes

Verify the current marketing status before design implementation. The TSB42AA4PDT is classified as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors and ensure compliance with RoHS and environmental specifications listed in the packaging information addendum. Review the latest datasheet revision for any parameter updates.

Controllers Selection Notes

Select this component when designing systems requiring integrated DTCP encryption for MPEG2 streams over IEEE 1394 buses. Ensure the host system can support the required 3.3-V supply voltage and utilizes compatible physical layer devices from the TSB41LV0X or TSB41AXX families. Evaluate the need for the specific 128-pin TQFP package dimensions against available board space constraints.

Controllers Part Context

This part belongs to the ceLynx family of IEEE 1394 link layer controllers designed for consumer electronics applications. It complements Texas Instruments' physical layer solutions to provide a complete link-layer solution for digital video distribution. The device specifically addresses the security requirements of content providers through embedded cryptographic hardware.

Controllers Replacement Considerations

The TSB42AB4PDT is an active alternative within the same series but lacks the embedded DTCP content protection features found in the AA4 variant. Verify if the application requires the specific encryption capabilities or if the AB4 variant suffices for unencrypted stream processing.