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AMD introduces the AMD-8132™ HyperTransport™ PCI-X® 2.0 tunnel. This is a high-speed device that provides two independent, high-performance PCI-X bus bridges, integrated with a high-speed HyperTransport technology tunnel. Designed for modes 1 and 2 operation, the AMD-8132™ component brings high-performance PCI-X® 2.0 connectivity to AMD Opteron™ processor-based systems with increased throughput, improved RAS capabilities, robust data management and enhanced HyperTransport™ technology connectivity As shown in Figure 1, the front-end HyperTransport interface (Side A) provides a configurable 16-bit wide communication path to the host, offering up to 8GB/s of aggregate bandwidth. Similarly, the back-end HyperTransport interface (Side B) provides a configurable 16-bit wide communication path to a downstream device, offering up to 8GB/s of aggregate bandwidth.

Features

Component features are as follows:

• 16-bit HyperTransport interfaces (Side A and B) offering a maximum aggregate bandwidth up to 8GB/s each side
• Two PCI-X bridges: bridge A and bridge B.
• Each bridge supports a 64-bit data bus.
• Each bridge supports Mode 1 PCI-X and conventional PCI protocol. Each bridge is designed to support Mode 2 operation.
• In PCI-X Mode 2, bridges are designed to support transfer rates of 266 and 200 MHz.
• In PCI-X Mode 1, bridges support transfer rates of 133, 100, 66, and 50 MHz.
• In PCI mode, bridges support transfer rates of 66, 50, 33, and 25 MHz.
• Independent transfer rates and operational modes for each bridge.
• Each bridge includes support for up to 5 PCI masters with clock, request, and grant signals.
• Each bridge includes a HyperTransport™ technology compliant interrupt controller. Legacy interrupt controller and IOAPIC modes are also supported.
• Each bridge can receive PCI device interrupts via INTA/B/C/D pins or via MSI/MSI-X transactions.
• SHPC-compliant hot-plug controller and support.