TSB42AA9APZTR

Controllers Overview

The TSB42AA9APZTR is a StorageLynx IEEE 1394 link-layer controller designed for ATA/ATAPI storage applications. It operates in a 100-pin TQFP package and supports serial bus data rates of 100, 200, and 400 Mbps. The device features a 576-byte transmit control FIFO supporting PIO modes 0–4, DMA modes 0–2, and Ultra DMA modes 0–4, alongside a 576-byte receive control FIFO and a bidirectional data FIFO. It includes an external flash PROM/EPROM interface for firmware updates and utilizes an embedded 8052 processor with 16K internal ROM program memory.

Controllers Feature Summary

• Automates SBP-2 transport protocol engine functions through hardware implementation
• Translates SBP-2 protocol commands to ATA/ATAPI commands using embedded processor and firmware
• Provides automatic response to configuration ROM quadlet and block read requests
• Supports external flash PROM or EPROM interface for easy program code changes during prototyping

Controllers Applications

• External hard disk drives (HDDs)
• CD-ROM, CD-R/W, DVD-ROM, and DVD-RAM drives
• ZIP drives and magneto-optical (MO) drives
• ORB drives

Controllers Procurement Notes

Verify the active status and lead-free compliance when sourcing this component. Confirm that the specific orderable part number matches the required tape and reel quantity for production integration. Ensure the moisture sensitivity level rating aligns with the assembly process timeline to prevent package damage during soldering operations.

Controllers Selection Notes

Select this controller for designs requiring native bridging between IEEE 1394 buses and ATA/ATAPI storage devices. Consider the integrated SBP-2 target controller capabilities to reduce host processor load. Evaluate the need for external firmware storage against the available internal ROM capacity for specialized application requirements.

Controllers Part Context

This component belongs to the Texas Instruments StorageLynx family of high-performance serial bus controllers. It is specifically engineered to handle the complexities of the Serial Bus Protocol 2 (SBP-2) transaction layer. The device simplifies the design of high-speed storage peripherals by offloading protocol management tasks from the main system CPU.

Controllers Replacement Considerations

TSB42AA9APZTG4 is a verified lead-free variant within the same product family.