TSB42AC3PZT

Controllers Overview

The TSB42AC3 is a 1394-1995 general-purpose link layer controller designed for high-performance data transfer between a 32-bit host controller and an IEEE 1394 physical layer device. It features a 50-MHz host interface frequency, allowing direct connection to most 32-bit hosts. The device includes a programmable 10K-byte total memory configured as asynchronous transmit, isochronous transmit, and general receive FIFOs, eliminating the need for external FIFOs. It supports 1394 transfer rates of 100, 200, and 400 Mbit/s in cable environments, and 50 and 100 Mbit/s in backplane environments. Operating from a single 3.3-V power supply, it utilizes a 100-pin TQFP package.

Controllers Feature Summary

• Provides a high-performance interface with capability of transferring data between the 32-bit host controller and the 1394 PHY-link interface.
• Includes separate ACK FIFO register capable of retaining up to six acknowledges returned by external nodes in response to asynchronous packets.
• Features additional programmable status output pins, including cd and paccom bits, to aid external DMA control.

Controllers Applications

• Motion control systems
• Motor control applications
• Video processing equipment
• Industrial process control

Controllers Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or direct manufacturer channels. Confirm that the specific part number matches the required package type and operating temperature range. Ensure compliance with RoHS directives if applicable to the target assembly. Review the latest datasheet revision for any updates regarding pin configurations or electrical characteristics before finalizing procurement orders.

Controllers Selection Notes

Select this component when a software-compatible alternative to the TSB12LV01B is required for 1394-1995 standard implementations. Consider the 100-pin TQFP package constraints during PCB layout planning. Evaluate the internal FIFO configuration flexibility against system bandwidth requirements to optimize asynchronous and isochronous transfer performance without external memory overhead.

Controllers Part Context

The TSB42AC3 serves as a link layer controller within the Texas Instruments IEEE 1394 product family. It is functionally comparable to the TSB12LV01B but offers enhanced status output capabilities. This component bridges host processors and physical layer transceivers, facilitating standardized serial bus communications in embedded and industrial environments requiring reliable data packet handling.

Controllers Replacement Considerations

The TSB12LV01B is a documented compatible alternative within the same product family. Verify pin-to-pin compatibility and register mapping alignment before substitution. Ensure the replacement part meets the specific voltage and speed requirements of the existing design architecture.