The Tundra Tsi576™ is part of Tundra’s third-generation RapidIO® switch family. Supporting 40 Gbps aggregate bandwidth, the Tsi576 enables customers to develop high-performance systems at low cost. The device is targeted at chip-to-chip DSP and processor aggregation and connection to network/backplane uplinks.

The Tsi576 can be configured as a 12-port x1 switch or a two-port x4 plus eight x1-port switch (or various combinations of x1 and x4). In the “eight plus two” configuration, the two-port x4 are used to aggregate traffic from local DSP or processor clusters serviced by the up to eight x1-ports. 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 Tsi576 contains all the benefits of its predecessor plus the switch 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 Tsi576 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.
• Aggregation of local traffic to backplane, offering the best cost to performance ratio for this type of heterogeneous port mix.
• Free 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

• The Tsi576 has tunable power per port to optimize budget for different applications. With competing synchronous switches, all ports must operate at the frequency of the highest speed port resulting in higher power dissipation. For example, the x4 ports can operate at 3.125 Gbaud, while the local x1 ports can operate at 1.25 Gbaud.
• The Tsi576 is a lower power switch using industry-leading PHY technology

System Level Design and Cost Reduction

• The Tsi576 uses similar voltage and clock sources as companion DSPs used in the same applications, resulting in simplified board design.
• The Tsi576 which only requires one clock input which reduces complexity of clock circuit design
• Lane swap simplifies design of routing on board by logically matching lanes in the Tsi576 to the ordering of lanes in companion components
• The Tsi576 features support superior signal integrity at the board and system level