With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced mi...With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced microcontroller bus architecture(AMBA),a design scheme of IP core is presented,and it is divided into the functional modules,and the structural design of the IP core is completed.The relationship between the internal modules of the IP core is clarified,and the top-down design method is used to build the internal architecture of the IP core.The IP core interface module,register module,baud rate module,transmit module,receive module,and interrupt module are designed in detail by using Verilog language.The simulation results show that the designed IP core supports serial peripheral interface(SPI)protocol,the function coverage of IP core reaches 100%,the maximum working frequency reaches 200 MHz,and the resource occupancy rate is less than 15%.The reusable IP core can support multiple data formats,multiple timing transmission modes,and master/slave operation modes,reducing the resource consumption of hardware circuits and having stronger applicability.展开更多
This paper proposes a redundant network communication structure for the patient integrated circuit(IC)card payment system in a hospital information system(HIS),compares it with the network structure of normal hospital...This paper proposes a redundant network communication structure for the patient integrated circuit(IC)card payment system in a hospital information system(HIS),compares it with the network structure of normal hospital IC card system,and calculates the reliabilities of the related communications like the RS485communication and the Ethernet communication.The new structure can efectively promote the reliability of the hospital operation and ensure the payment collection when the Ethernet network is broken.The system is applied to a local hospital and the cost-performance rate is satisfactory during the application.展开更多
基于光束感生电阻变化(OBIRCH)的热激光激发定位技术广泛应用于半导体器件的失效分析,特别是大规模集成电路的短路失效定位。详细介绍了OBIRCH技术在芯片背面失效定位时的原理和方法,通过精密研磨、抛光等先进制样手段对失效样品进行开...基于光束感生电阻变化(OBIRCH)的热激光激发定位技术广泛应用于半导体器件的失效分析,特别是大规模集成电路的短路失效定位。详细介绍了OBIRCH技术在芯片背面失效定位时的原理和方法,通过精密研磨、抛光等先进制样手段对失效样品进行开封、芯片背面减薄。采用OBIRCH方法从芯片背面进行激光成像,成功对0.18μm工艺6层金属化布线的集成电路gg NMOS结构保护网络二次击穿和PMOS电容栅氧化层损伤进行了失效定位,并对背面定位图像和正面定位图像、In Ga As CCD成像进行了对比分析。结果表明,In Ga As CCD成像模糊并无法定位,OBIRCH背面定位成像比正面成像清楚,可以精确定位并观察到缺陷点。因此,OBIRCH技术用于集成电路短路的背面失效定位是准确的,可解决多层结构的正面定位难题。展开更多
文摘With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced microcontroller bus architecture(AMBA),a design scheme of IP core is presented,and it is divided into the functional modules,and the structural design of the IP core is completed.The relationship between the internal modules of the IP core is clarified,and the top-down design method is used to build the internal architecture of the IP core.The IP core interface module,register module,baud rate module,transmit module,receive module,and interrupt module are designed in detail by using Verilog language.The simulation results show that the designed IP core supports serial peripheral interface(SPI)protocol,the function coverage of IP core reaches 100%,the maximum working frequency reaches 200 MHz,and the resource occupancy rate is less than 15%.The reusable IP core can support multiple data formats,multiple timing transmission modes,and master/slave operation modes,reducing the resource consumption of hardware circuits and having stronger applicability.
基金the National Natural Science Foundation of China(No.81170507)the Project of Shanghai Committee of Science and Technology(Nos.11140903700 and 12142201200)
文摘This paper proposes a redundant network communication structure for the patient integrated circuit(IC)card payment system in a hospital information system(HIS),compares it with the network structure of normal hospital IC card system,and calculates the reliabilities of the related communications like the RS485communication and the Ethernet communication.The new structure can efectively promote the reliability of the hospital operation and ensure the payment collection when the Ethernet network is broken.The system is applied to a local hospital and the cost-performance rate is satisfactory during the application.
文摘基于光束感生电阻变化(OBIRCH)的热激光激发定位技术广泛应用于半导体器件的失效分析,特别是大规模集成电路的短路失效定位。详细介绍了OBIRCH技术在芯片背面失效定位时的原理和方法,通过精密研磨、抛光等先进制样手段对失效样品进行开封、芯片背面减薄。采用OBIRCH方法从芯片背面进行激光成像,成功对0.18μm工艺6层金属化布线的集成电路gg NMOS结构保护网络二次击穿和PMOS电容栅氧化层损伤进行了失效定位,并对背面定位图像和正面定位图像、In Ga As CCD成像进行了对比分析。结果表明,In Ga As CCD成像模糊并无法定位,OBIRCH背面定位成像比正面成像清楚,可以精确定位并观察到缺陷点。因此,OBIRCH技术用于集成电路短路的背面失效定位是准确的,可解决多层结构的正面定位难题。
