CAJ | 학술논문

IIC接口为OPB总线与IIC串行总线之间的高度可编程接口,在I2C总线上既可作为主设备,又可作为从设备。该部分设备挂在OPB总线上,PPC处理器通过PLB2OPB桥来访问这些寄存器。为使PCI主机能正确访问IIC接口寄存器,文中在对PCI总线协议和IIC协议进行深入研究的基础上,提出一种PCI接口到OPB接口的时序转换电路解决方案,以满足二者之间的通信需求。通过功能仿真和工程实践表明,该转换电路工作稳定,性能良好,较好地满足了应用需求。
IIC접구위OPB총선여IIC천행총선지간적고도가편정접구,재I2C총선상기가작위주설비,우가작위종설비。해부분설비괘재OPB총선상,PPC처리기통과PLB2OPB교래방문저사기존기。위사PCI주궤능정학방문IIC접구기존기,문중재대PCI총선협의화IIC협의진행심입연구적기출상,제출일충PCI접구도OPB접구적시서전환전로해결방안,이만족이자지간적통신수구。통과공능방진화공정실천표명,해전환전로공작은정,성능량호,교호지만족료응용수구。
The IIC400 synthesizable core from the IBM microelectronics library provides a highly programmable interface between the On-chip Peripheral Bus (OPB) and the Industry-standard I2C (Inter-Integrated Circuit) serial bus. This part of the equipment on the OPB bus,PPC processors access these registers by PLB2OPB bridge. For PCI host can visit IIC interface register correctly,on the basis of deep research on PCI bus protocol and IIC,put forward a kind of timing conversion circuit solution of PCI interface to the OPB interface in or-der to satisfy the demands of the communication between them. The functional simulation and engineering practice show it can work well, has good performance and meets the requirements better.