Tsi148™
PCI/X-to-VME Bridge
Features
The Tsi148 Advantage
VMEbus Interface
The Tundra Semiconductor Corporation (Tundra) Tsi148 device is the
next generation component in our industry leading, high performance
VMEbus system interconnect product family. Tsi148 is fully compliant
with the 2eSST and VME64 Extension standards. This enables you to
take advantage of the higher performance VME protocols, while
preserving your existing investment in VME boards that implement
legacy protocols.
Tsi148 eases design constraints of VME Single Board Computers
(SBCs) by requiring less board real estate and power than the previous
generation of VME-to-PCI/X bridge components.
These capabilities make Tsi148 a key building block of the VME
Renaissance and of next generation VME single board computers.
Figure 1: Tsi148 Block Diagram
Registers
configuration, memory mapped,
mailbox, semaphores
Other Features
• Two, programmable DMA controllers
with Direct mode and Linked-List
mode support
• IEEE 1149.1 Interface
• 456 PBGA package, 1.0 mm ball
pitch, 27 mm x 27mm size
© 2005, Tundra Semiconductor Corporation. All Rights Reserved.
Interrupts
64-bit Address / 64-bit Data VMEbus
Supports: SCT, BLT, MBLT,
2eVME, 2eSST
VMEbus
System
Controller
VMEbus Interface
Linkage Module
PCI/X Master
PCI/X Bus Interface
JTAG
posted writes, split reads,
prefetched reads
PCI/X Target
DMA
33-to-66 MHz PCI Bus
50-to-133 MHz PCI-X Bus
64-bit Address / 64-bit Data PCI/X Bus
• Fully compliant, programmable PCI
or PCI-X bus interface
• 64-bit data path
• Multiple modes of bus operation
— PCI-X operates from 50 to
133 MHz
— PCI bus operates from 33 to
66 MHz
• 32-bit or 64-bit addressing and data in
PCI and PCI-X modes
VME Master
PCI/X Interface
Arbiter, Clocks,
Daisy chain drivers,
Global bus timer
IEEE1149.1
Boundary Scan
VME Slave
Tsi148 VME-to-PCI/X bridge provides a
4x increase in usable bus bandwidth
over existing solutions.
Tsi148 increases a system’s usable bus bandwidth because its local bus
interface is designed for the next generation PCI/X processors and
peripherals that support either a 66 MHz PCI bus or a 133 MHz PCI-X
bus interface.
posted writes, prefetched reads
• Standards supported:
— Legacy protocols to protect
existing VME investment
— VME64 Extensions
— 2eVME and 2eSST protocols to
bring support for higher bandwidth
• Full VMEbus system controller
functionality
• Interrupt and interrupt handling
capability
• Flexible register set; programmable
from both the PCI/X bus and VMEbus
80A3020_BK001_02
Interrupter,
Interrupt handler
-1-
Document: 80A3020_FB001_05
