关键词: MPC8280, PCI, 驱动设计, 内存空间读写, 配置空间读写, I O空间读写

Abstract:

Software working in MPC8280 only supports 40 Mbit·s^-1 switches in its high-point because the highest frequency of MPC8280 is 450 MHz,which cannot meet the capability of multiple 1 000 Mbit·s^-1 switches.The design with MPC8280 connected to BCM56514 via PCI interface can break through the barrier.The PCI driver based on MPC8280 make it possible for the MPC8280 to configure and control the BCM56514 and update the router table in the BCM56514 with PCI memory space read/write,PCI configuration space read/write and PCI I/O space read/write,and bring MPC8280 into applications in the routers and switches.

Key words: MPC8280;PCI;driven design;memory space to read and write;configuration space to read and write;I O space read and write