The TSI148 is the latest-generation component in IDT’s industry-leading, high-performance VMEbus system interconnect product family. The device is fully compliant with the 2eSST and VME64 Extension standards which allow designers to take advantage of the higher performance VME protocols, while preserving existing investment in VME boards that implement legacy protocols. TheTSI148 increases a system’s usable bus bandwidth through a local bus interface designed for the PCI/X processors and peripherals that support either a 66 MHz PCI bus or a 133 MHz PCI-X bus interface.


  • VME interface supports 2eSST as well as legacy protocols
  • Full VME bus system controller functionality
  • Fully compliant, programmable 64-bit PCI or PCI-X bus interface
  • PCI-X operation from 50-133 MHz, PCI from 33 to 66 MHz
  • Two DMA controllers with direct and linked-list modes
  • Interrupt and interrupt handling capability
  • IEEE 1149.1 JTAG support
  • Commercial and industrial temperature variants

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
TSI148-133CL Obsolete PBGA 456 C No Tray Package Info
TSI148-133CLY Obsolete PBGA 456 C Yes Tray Package Info
TSI148-133IL Obsolete PBGA 456 I No Tray Package Info
TSI148-133ILY Obsolete PBGA 456 I Yes Tray Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
User Guides & Manuals
Tsi148 User Manual Manual PDF 1.83 MB
Application Notes & White Papers
Tsi148/Universe II Differences Application Note Application Note PDF 164 KB
Tsi148 VMEbus Test and Set Explanation Application Note Application Note PDF 152 KB
Tsi148 Initialization Application Note PDF 222 KB
Interfacing the Tsi384 and Tsi148: Clocking and Reset Considerations Application Note PDF 209 KB
PDN# : CQ-14-06R1 Revised Product Discontinuance Notice Product Discontinuation Notice PDF 407 KB
PDN# : CQ-14-06 MANUFACTURING DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 192 KB
PCN# : A1001-01 MOLD COMPOUND, DIE ATTACH AND MARK METHOD CHANGE ON TSI148-133CL & TSI148-133IL Product Change Notice PDF 123 KB
Tsi148 BSDL File Model - BSDL ZIP 12 KB
Tsi148 IBIS Model Model - IBIS ZIP 131 KB
Tsi148 Device Errata Device Errata PDF 72 KB
Tsi148 Pinlist Misc TXT 12 KB
Tsi148 VME to PCI/X Bridge Product Brief PDF 79 KB