The Tsi574™ is part of Tundra’s third-generation RapidIO switch family. Supporting 40 Gbps aggregate bandwidth, the Tsi574 enables customers to develop high-performance systems at low cost. The device is targeted at chip to chip DSP and processor aggregation.

The Tsi574 can be configured as an 8-port x1 switch or a 4-portx4 switch (or various combinations of x1 and x4). Each of the ports can be run at 1.25 Gbaud, 2.5 Gbaud, or 3.125 Gbaud.

Building on the industry-leading Tsi564A™ Serial RapidIO Switch, the Tsi574 contains all the benefits of its predecessor plus it enhances the fabric switching capabilities through the addition of the following:

• Multicast
• Traffic management through scheduling algorithms
• Programmable buffer depth
• Fabric performance monitoring to supervise and manage traffic flow

Embedded applications further benefit from the ability to route packets to over 64,000 RapidIO endpoints through per port hierarchical lookup tables, independent unicast and multicast routing mechanisms, and error management extensions that provide proactive issue notification to the fabric controller.

The Tsi574 supports both in-band serial RapidIO access to registers or out-of-band access to the full fabric register set through the I²C interface.

Business Benefits

Improves Overall System Performance

• Easy implementation of distributed processing between DSPs in clusters
• Frees up DSPs resources for actual application processing vs. terminating protocol stacks in software
• Superior real-time image processing resolution, size and frames per second in military and medical imaging systems
• Multicast feature results in real-time replication of packet data across all ports supporting real-time data distribution application such as Video Head End Infrastructure or Wireless Data networking

Reduced Power Dissipation

• Tunable power per port to optimize budget for application. With competing synchronous switches all ports must operate at the frequency of the highest speed port resulting in higher power dissipation.
• Lower power switch using industry leading PHY technology

System Level Design and Cost Reduction

• The Tsi574 uses similar voltage and clock sources as companion DSPs used in the same applications, resulting in simplified board design.
• The Tsi574 switch requires only one clock input which reduces complexity of clock circuit design
• Lane swap simplifies design of routing on board by logically matching lanes in the Tsi574 switch to the ordering of lanes in companion components
• The Tsi574 features support superior signal integrity at the board and system level