TSI148-133ILY

Specialized Overview

The TSI148-133ILY is a VME to PCI-X bridge manufactured by Renesas Electronics, formerly IDT. It provides a fully compliant interface between VMEbus systems and PCI/PCI-X processors. The device supports 2eSST and VME64x standards while maintaining backward compatibility with legacy VME protocols. It features a local bus interface designed for 66 MHz PCI or 133 MHz PCI-X operation. The component includes two DMA controllers supporting direct and linked-list modes, interrupt handling capabilities, and IEEE 1149.1 JTAG support. It is housed in a PBGA-456 package.

Specialized Feature Summary

• Supports both 2eSST and legacy VME protocols for flexible system integration
• Provides full VME bus system controller functionality
• Includes dual DMA controllers with direct and linked-list transfer modes
• Features programmable 64-bit PCI or PCI-X bus interface

Specialized Applications

• VMEbus system interconnect design
• High-performance embedded computing systems
• Industrial control applications requiring VME to PCI-X bridging

Specialized Procurement Notes

Verify the manufacturer status as Renesas Electronics Corporation, noting the historical IDT branding. Confirm the specific suffix ILY corresponds to the intended temperature grade and package variant. Check for obsolescence status and limited availability as indicated by distributor records. Ensure compliance with RoHS directives if required for the specific application environment.

Specialized Selection Notes

Select this component when a VME64x or 2eSST master needs to interface with a PCI-X processor running at up to 133 MHz. Consider the PBGA-456 package constraints for PCB layout. Evaluate the need for dual DMA engines and JTAG debugging support. Compare against alternative bridges like the CA91C142D if functionally similar but different protocol support is acceptable.

Specialized Part Context

The TSI148 series represents a high-performance solution for VMEbus interconnects. Originally developed by IDT, the product line was acquired by Renesas Electronics. This specific model targets designers needing to leverage higher performance VME protocols while preserving investments in legacy VME boards. It serves as a critical link in mixed-protocol embedded systems.

Specialized Replacement Considerations

The CA91C142D is noted as a functionally similar VME to PCI bridge. Verify pinout compatibility and protocol support differences before substitution. No other public substitute part numbers are confirmed.