MPC8280 datasheet(309/1386 Pages) FREESCALE

309 / 1386 page

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

9-1

Chapter 9

PCI Bridge

The PCI bridge enables the MPC8280 to bridge PCI devices gluelessly to a processor that implements the

PowerPC architecture, to serve as a PCI interface for CompactPCI™ (CPCI) systems or as a basis for

passive PCI NIC implementations. In addition, multiple MPC8280 processors can interface with each

other over the PCI bus.

The key features of the PCI bridge are as follows:

•

PCI Specification Revision 2.2 compliant and supports frequencies up to 66 MHz

•

On-chip arbitration

•

Support for PCI-to-60x-memory and 60x-memory-to-PCI streaming

•

PCI host bridge or peripheral capabilities

•

Includes 4 DMA channels for the following transfers:

— PCI-to-60x to 60x-to-PCI

— 60x-to-PCI to PCI-to-60x

— PCI-to-60x to PCI-to-60x

— 60x-to-PCI to 60x-to-PCI

•

Includes all of the configuration registers required by the PCI standard as well as message and

doorbell registers

•

Supports the I2O standard

•

Hot-Swap friendly (supports the Hot Swap Specification as defined by PICMG 2.1 R1.0 August 3,

1998)

•

Support for 66 MHz, 3.3 V specification

•

Uses a buffer pool for the 60x-PCI bus interface

•

Makes use of the local bus signals to avoid the need for additional pins

MPC8280 Datasheet(PDF) 309 Page - Freescale Semiconductor, Inc