The Tsi381™ is a high-performance forward bridge that connects a single lane PCI Express (x1 PCIe) interface to the PCI bus standard.

The Tsi381’s PCIe Interface is fully compliant to the PCI Express Specification (Revision 1.1). The device’s 32 bit PCI Interface can operate up to 66 MHz in PCI mode. This interface offers designers extensive flexibility by supporting three types of addressing modes: transparent, opaque, and non-transparent.

High Performance

The Tsi381 incorporates deep buffering and a queuing architecture to minimize latency and maximize throughput. The bridge incorporates features such as short-term caching that can further increase system performance for certain applications.

Transparent, Non-transparent, and Opaque Bridging

Transparent mode operation is available for efficient, flow-through configurations, while non-transparent bridging allows isolation between the Tsi381’s PCIe and PCI domains. Non-transparent bridging enables applications that use a processor on the secondary bus, such as intelligent adapter cards. Opaque mode provides semi-transparent operation for multi-processor configurations and enhanced private device support.

Industrial Temperature Standard and RoHs Compliant Package

The Tsi381 is available in a 13 x 13mm BGA package rated for industrial temperature operation (-40°C to 85°C). Standard and RoHs compliant packages are available. The device's package footprint is compatible with the PLX PEX8111, enabling it to fit into the same board designs with minor modifications and component changes.

Business Benefits

Compliance

• Fully compliant to the PCI Express Specification (Revision 1.1)

High Performance

• Superior queuing and buffering architecture enhances system performance by delivering high throughput and low latency across bus interfaces.
• Features such as short-term caching give designers further options to increase system performance.

Support for Non-transparent Bridging

• Provides a bug-free solution for applications such as intelligent IO cards that need a processor on the secondary bus.

Simplify Design for Signal Integrity and Reliability

• The Tsi381 package simplifies board layout and design to maximize signal integrity and reliability for high-speed serial signal routing.

For a list of Tundra PCIe bridge equivalents to replace standard PCIe bridges from other manufacturers, please see PCI and PCIe Bridge Cross Reference located on the Resources tab.