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    • 3. 发明申请
    • USING SHARED MEMORY WITH AN EXECUTE-IN-PLACE PROCESSOR AND A CO-PROCESSOR
    • 使用共享存储器与执行处理器和协处理器
    • WO2008058154A3
    • 2008-08-21
    • PCT/US2007083828
    • 2007-11-06
    • SPANSION LLCTOM JOE YNATARAJAN VENKAT
    • TOM JOE YNATARAJAN VENKAT
    • G06F12/00
    • G06F12/1416G06F9/44573G06F12/1408G06F21/85
    • The claimed subject matter provides systems and/or methods that facilitate sharing of a memory, having a single channel of access, between two or more processors. A host processor can be operatively connected to a co-processor and the memory in series. The host processor can execute in place to enable it to execute code directly from the memory, and can arbitrate access to the memory bus and thus the memory, so that the host processor can perform all memory fetches to the memory without interruption by the co-processor. The co-processor can be implemented as a finite state machine, and only accesses the memory during read or write cycles issued by the host processor. Various types of co-processors can be employed to perform various functions, such as cryptography and digital signal processing, for example. The memory can be volatile or non-volatile memory.
    • 所要求保护的主题提供了便于在两个或多个处理器之间共享具有单一访问通道的存储器的系统和/或方法。 主机处理器可以可操作地连接到协处理器和串行存储器。 主处理器可以执行到位以使其能够直接从存储器执行代码,并且可以仲裁对存储器总线的访问,从而对存储器进行仲裁,使得主机处理器可以执行所有存储器提取到存储器, 处理器。 协处理器可以被实现为有限状态机,并且仅在由主处理器发出的读或写周期期间访问存储器。 可以使用各种类型的协处理器来执行各种功能,例如密码学和数字信号处理。 内存可以是易失性或非易失性存储器。