摘要
PCI 总线由主桥管理整个总线。若 PCI9056 设为主桥,寄存器初始化可由在其局部总线一侧的 CPU 进行,也可由存入 EEPROM 的内部参数自动装入。若 PCI9056 作为适配器,内部寄存器可由初始化过的主桥通过 PCI 配置周期设置,也可由 EEPROM 在加电时自动载入系统程序加电初始化设置。当中央资源作主设备访问 PCI 设备,应初始化Slave,设置 PCI 桥寄存器。
PCI bus is controlled with host bridge, if PCI9056 is configured as host bridge, register is initialed by local CPU, and also is loaded parameters from EEPROM. If PCI9056 is configured as adaptor, its internal register is initialed by PCI configuration cycle, also system program is automatically loaded from EEPROM on powered up to initialize internal register. When center resource was used as main equipment to access PCI device, Slave is initialized, and set PCI configuration register.
出处
《兵工自动化》
2005年第1期37-38,41,共3页
Ordnance Industry Automation
