会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Three port random access memory in a network bridge
    • 三端口随机存取存储器在网桥中
    • US5130981A
    • 1992-07-14
    • US627280
    • 1990-12-14
    • Jeffrey R. Murphy
    • Jeffrey R. Murphy
    • H04L12/46
    • H04L12/4625
    • A network bridge with a three port interface to random access memory is presented. The network bridge includes a system processor, a random access memory, a first memory access controller, a second memory access controller and a three port interface to the random access memory. The random access memory is used to store data packets received by the network bridge from the first network and the second network. The three port interface to the random access memory includes a first port connected to the first memory access controller, a second port connected to the second memory access controller and a third port connected to the system processor. The three port interface allots to the first memory access controller, to the second memory access controller and to the system processor access to the random access memory. The access to the random access memory is allotted so that the first memory access controller, the second memory access controller and the system processor all have equal access priority. The three port interface access cycle is approximately three time as fast as the access cycle of the system processor, the first memory access controller and the second memory access controller. This eliminates the need for local buffers between the memory access controllers and the networks and allows the system processor and the memory access controllers to access the three port interface simultaneously with a minimum of access collisions.
    • 提出了一种具有三端口接口的网桥,用于随机存取存储器。 网桥包括系统处理器,随机存取存储器,第一存储器访问控制器,第二存储器访问控制器和到该随机存取存储器的三端口接口。 随机存取存储器用于存储网桥从第一网络和第二网络接收的数据分组。 与随机存取存储器的三端口接口包括连接到第一存储器访问控制器的第一端口,连接到第二存储器访问控制器的第二端口和连接到系统处理器的第三端口。 三端口接口分配给第一个存储器访问控制器,到第二个存储器访问控制器和系统处理器访问随机存取存储器。 分配对随机存取存储器的访问,使得第一存储器访问控制器,第二存储器访问控制器和系统处理器都具有相同的访问优先级。 三端口接口访问周期大约是系统处理器,第一存储器访问控制器和第二存储器访问控制器的访问周期的三倍。 这消除了对存储器访问控制器和网络之间的本地缓冲区的需要,并允许系统处理器和存储器访问控制器以最少的访问冲突同时访问三端口接口。