CD control chip having common storage access assembly and storage access method thereof

The present invention includes at least one synchronous dynamic RAM for temporarily storing great amount of data essential for the processor to work and buffer storing in high speed processing; at least one flash memory for storing program the processor executes, firmware and user's preset values; and one memory interface for connecting the address and data bus shared by the synchronous dynamic RAM and the flash memory. The synchronous dynamic RAM and the flash memory have the common bus and will not be accessed simultaneously, and the accessed memory is determined with the arbitrator in the memory interface, which enables the memory selected based on priority order. 一种共用存储器存取装置的光盘控制芯片与其存储器存取方法，包含至少一同步动态随机存取存储器，用以暂存处理器工作所需的大量数据，以及高速处理时的缓冲。至少一快闪存储器，用以储存处理器所要执行的程序、固件以及使用者预设值；其中该同步动态随机存取存储器与该快闪存储器的地址与数据脚位分别共用同一总线，且该同步动态随机存取存储器与快闪存储器不会同时被存取；一存储器界面，用以连结该同步动态随机存取存储器与该快闪存储器分别共用的地址与数据总线；其中该存储器界面还包含有一仲裁器，根据存取指令要求的优先顺序决定何者存取要求需先被执行，同时对欲存取的存储器的选择脚位致能，且每次只有一个存储器的选择脚位会被致能。