| 摘要 |
<P>PROBLEM TO BE SOLVED: To mutually connect semiconductor memories differed in working speeds or access methods. <P>SOLUTION: An address conversion part 21 transmits an address signal SIG20 accepted from a bus 7 to a ROM 5, and a signal conversion part 20 converts a control signal SIG21 accepted from the bus 7 to a ROM-read signal SIG27 transmitted to the ROM 5. A storage part 22 temporarily holds data accepted from the ROM 5, and an output control part 23 reads data stored in the storage part 22 and outputs data based on a control protocol of an SDRAM 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
