Memory access method, device cache consistency access system and chip

The invention provides a memory access method, an equipment cache consistency access system and a chip, and the method comprises the steps: determining whether a memory access request participates in cache consistency sharing or not when the memory access request sent by peripheral equipment is received, and determining whether the memory access request does not participate in cache consistency sharing or not when it is determined that the memory access request does not participate in cache consistency sharing; and shunting the memory access request to a memory bus, and responding to the memory access request through the memory bus. Therefore, the memory bandwidth occupied by the peripheral equipment can be reduced, so that the memory access efficiency of the processor can be improved, and the efficiency of the equipment cache consistency access system can be improved. 本申请提供了一种内存访问方法、设备缓存一致性访问系统和芯片，该方法包括：在接收到外围设备发送的内存访问请求时，确定内存访问请求是否参与缓存一致性共享，在确定内存访问请求不参与缓存一致性共享时，将内存访问请求分流到内存总线，通过内存总线响应内存访问请求。这样，可以减少外围设备对内存带宽