Intel 31154 manual Features List

Introduction

The 31154 has additional hardware support for CompactPCI* Hot Swap and Redundant System Slot via queue flush, arbiter lock, and clock output tristating.

The 31154 supports any combination of 32-bit and 64-bit data transfers on its primary and secondary bus interfaces. The 31154 is 33/66 MHz capable in conventional PCI mode, and can run at 66 MHz, 100 MHz, or 133 MHz when operating in PCI-X mode, depending upon its surrounding environment.

2.2Features List

Table 3. Features List

•PCI bus interfaces (2):

—PCI Local Bus Specification, Revision 2.3 compliant

—PCI-to-PCI Bridge Architecture Specification, Revision 1.2 compliant

—PCI Bus Power Management Interface Specification, Revision 1.1 compliant

—PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0b compliant

—External SROM support

—Vital Products Data (VPD) support

—64-bit initiator/target capable

—64-bit addressing

•Hardware support for dual-host cPCI configurations

•Compact PCI Hot Swap Specification, Revision 2.1 R2.0 support

•Secondary clock generation with 10 clock outputs

•Secondary bus arbitration:

—Internal arbiter supports nine agents in addition to the 31154.

—Internal arbiter can be disabled.

—Optimized for PCI-X mode

—Bus parking on bridge or last master

•Improved buffer architecture:

—8 KBytes data buffers in each direction

—Improved level of concurrency:

Up to nine outstanding transactions on each bus simultaneously

•Scalability and flexibility:

—Conventional PCI 32/64-bit 33/66 MHz, 3.3 V

—5 V tolerant inputs

—PCI-X 32/64-bit 66/100/133 MHz, 3.3 V

•JTAG interface

•GPIO interface:

—Allows simple software-controlled signaling protocols

10 Intel® 31154 133 MHz PCI Bridge Design Guide Design Guide