Memory control circuit and method for a CD-ROM driving system

Details Memory control circuit and method for a CD-ROM driving system Memory control circuit and method for a CD-ROM driving system

1996-09-25

1999-03-09

Lall, Parshotam S.

395862, G11B 2018

Patent

active

058813144

ABSTRACT:
A memory control circuit in a CD-ROM driving system is provided which controls the writing and reading of data to and from a memory in accordance with a plurality of data operations. The circuit contains a plurality of requesters, a priority level determiner, and a memory control signal generator. The requesters correspond to the plurality of data operations and respectively generate request signals. Furthermore, the requesters respectively generate physical addresses of the memory which are respectively accessed during the data operations. The priority level determiner determines the priority levels of the request signals and outputs a selection signal based on the request signals and the priority levels. Moreover, the selection signal identifies one of the data operations as a selected data operation. The memory control signal generator generates a memory control signal and a memory address which corresponds to one of the physical addresses to be accessed during the selected data operation. As a result of the above-configuration, a request to transmit data from the memory to a high-speed host computer can be quickly satisfied, and thus, the efficiency of the host computer can be maintained. Also, a method which is performed by the memory control circuit is provided.

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