| 摘要 |
PROBLEM TO BE SOLVED: To reduce circuit scale, to flexibly cope with a change of application, etc., and to enhance reusability regarding a memory controller by preferably being used for the real time processing application having many kinds of memory access factors such as MPEG CODEC and a digital broadcast receiver, etc. SOLUTION: The memory controller is provided with a system interface circuit 9 to mediate a plurality of access requests (a) to (n) from an accessing origin of an SDRAM 7 and to extract a block to access the SDRAM 7. An address engine 10 and a command sequence control circuit 11 common to the plurality of access factors (a) to (n) are installed on the rear stage of the system interface circuit 9.
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