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    • 5. 发明授权
    • Data transfer apparatus with control of buses to optimize different size data transfers
    • 数据传输设备,可控制总线,优化不同大小的数据传输
    • US07685353B2
    • 2010-03-23
    • US12390198
    • 2009-02-20
    • Kenichi Kawaguchi
    • Kenichi Kawaguchi
    • G06F13/36
    • G06F13/4027G06F13/4031G06F13/4059G06F13/423G06F2213/0024
    • A bus bridge is connected to a primary bus and a secondary bus, and relays data between a master and a target which are each connected to a different one of the primary and secondary buses. The bus bridge includes a primary bus interface, a secondary bus interface, a data FIFO, and a register block. The register block, which can be written by the master, includes two registers corresponding to the primary and secondary buses. Relay information showing the number of entries of data to be relayed from the target to the master is registered in a register corresponding to a bus to which the target is connected. In a read transaction, the primary bus interface or the secondary bus interface reads data from the target until data of the amount shown by the registered relay information is stored in the data FIFO.
    • 总线桥连接到主总线和辅助总线,并且中继主机和目标之间的数据,每个主站和目标站之间连接到主总线和次总线之间的不同的总线。 总线桥包括主总线接口,辅助总线接口,数据FIFO和寄存器块。 可由主器件写入的寄存器块包括与主母线和辅助母线相对应的两个寄存器。 显示要从目标到主机中继的数据的条目数的中继信息被登记在对应于目标连接到的总线的寄存器中。 在读取事务中,主总线接口或辅助总线接口从目标读取数据,直到被注册的中继信息所示量的数据被存储在数据FIFO中。
    • 6. 发明授权
    • Bus bridge arbitration method
    • 总线桥仲裁方法
    • US07313642B2
    • 2007-12-25
    • US10391167
    • 2003-03-18
    • Kenichi Kawaguchi
    • Kenichi Kawaguchi
    • G06F13/36
    • G06F13/4031
    • A bus bridge is connected to a first bus and a second bus. In the bus bridge, an arbiter grants ownership of the first bus to one of a plurality of devices connected to the first bus. A detecting unit detects a read cycle initiated by the device on the first bus to read data from a memory which is also accessible by another device connected to the second bus. A first signaling unit sends a first signal to the arbiter, when the data is not yet transferable to the device when the read cycle is detected. A second signaling unit sends a second signal to the arbiter, when the data becomes transferable to the device. The arbiter deprives the device of the ownership of the first bus upon receipt of the first signal, and withholds from granting the ownership to the device until receipt of the second signal.
    • 总线桥连接到第一总线和第二总线。 在总线桥中,仲裁者将第一总线的所有权授予连接到第一总线的多个设备之一。 检测单元检测由第一总线上的设备发起的读周期,以从存储器读取数据,该存储器也可由连接到第二总线的另一设备访问。 当检测到读取周期时,当数据不能传输到设备时,第一信令单元向仲裁器发送第一信号。 当数据可转移到设备时,第二信令单元向仲裁器发送第二信号。 仲裁者在收到第一个信号后,剥夺了第一个公共汽车的所有权,并将所有权授予设备,直到收到第二个信号。
    • 8. 发明授权
    • Bus bridge with stored controlling relay information
    • 具有存储控制继电器信息的总线桥
    • US07185137B2
    • 2007-02-27
    • US11209511
    • 2005-08-23
    • Kenichi Kawaguchi
    • Kenichi Kawaguchi
    • G06F13/36
    • G06F13/4027G06F13/4031G06F13/4059G06F13/423G06F2213/0024
    • A bus bridge is connected to a primary bus and a secondary bus, and relays data between a master and a target which are each connected to a different one of the primary and secondary buses. The bus bridge includes a primary bus interface, a secondary bus interface, a data FIFO, and a register block. The register block, which can be written by the master, includes two registers corresponding to the primary and secondary buses. Relay information showing the number of entries of data to be relayed from the target to the master is registered in a register corresponding to a bus to which the target is connected. In a read transaction, the primary bus interface or the secondary bus interface reads data from the target until data of the amount shown by the registered relay information is stored in the data FIFO.
    • 总线桥连接到主总线和辅助总线,并且中继主机和目标之间的数据,每个主站和目标站之间连接到主总线和次总线之间的不同的总线。 总线桥包括主总线接口,辅助总线接口,数据FIFO和寄存器块。 可由主器件写入的寄存器块包括与主母线和辅助母线相对应的两个寄存器。 显示要从目标到主机中继的数据的条目数的中继信息被登记在对应于目标连接到的总线的寄存器中。 在读取事务中,主总线接口或辅助总线接口从目标读取数据,直到被注册的中继信息所示量的数据被存储在数据FIFO中。