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公开(公告)号:US20170068304A1
公开(公告)日:2017-03-09
申请号:US14848872
申请日:2015-09-09
Applicant: MediaTek Inc.
Inventor: Yen-Lin LEE , Yun-Ching LI , Chih-Hsiang HSIAO , Yu-Cheng HSIEH , Li-Chun TU
CPC classification number: G06F1/3287 , G06F1/3275 , G06F3/0619 , G06F3/065 , G06F3/0685 , G06F12/0238 , G06F12/0638 , G06F12/0804 , G06F12/1081 , G06F13/28 , G06F2212/1028 , G06F2212/1044 , G06F2212/205 , G06F2212/656 , G11C14/0036 , Y02D10/13 , Y02D10/14 , Y02D10/171
Abstract: A low-power memory access method and associated apparatus are provided. The apparatus includes a memory controller and a processing unit. The memory controller is coupled to a first memory and a second memory, and includes: a memory management circuit, for allocating physical memory addresses of the first memory and the second memory and controlling access of the first memory and the second memory; and a direct-memory-access (DMA) controller. The processing unit is for accessing the first memory and the second memory via the memory controller. When the apparatus is in an active mode, the memory management circuit copies a portion of data stored in the second memory to the first memory for use by the processing unit, and records dirty data information when the portion of data in the first memory differs from that in the second memory.
Abstract translation: 提供了一种低功率存储器存取方法和相关装置。 该装置包括存储器控制器和处理单元。 存储器控制器耦合到第一存储器和第二存储器,并且包括:存储器管理电路,用于分配第一存储器和第二存储器的物理存储器地址并控制第一存储器和第二存储器的存取; 和直接存储器访问(DMA)控制器。 处理单元用于经由存储器控制器访问第一存储器和第二存储器。 当设备处于活动模式时,存储器管理电路将存储在第二存储器中的数据的一部分复制到第一存储器供处理单元使用,并且当第一存储器中的数据部分不同时记录脏数据信息 在第二个记忆中。