| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for RAM interface which are improved. SOLUTION: The method includes a technique which accesses M words shorter than a prescribed fixed burst length of a RAM from the RAM. The method accesses a dynamic random access memory DRAM to store and retrieve data words relaxed to a two-dimensional picture, and processing is performed which provides a fixed width word which has a fixed number of bits to be used for addressing variable width data and has a width definition field and an address field. In an interface to connect a bus to the RAM, an independent address generator generates an address required for a RAM interface to address the RAM. The address generator communicates with the RAM interface through a two-wire interface.
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