Apparatus and methods for dedicated command port in memory...

Details Apparatus and methods for dedicated command port in memory... Apparatus and methods for dedicated command port in memory...

2005-09-06

2005-09-06

Anderson, Matthew D. (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S005000

Reexamination Certificate

active

06941416

ABSTRACT:
A memory controller includes a chip-select-interface controller and a synchronous random-access-memory (SDRAM)-interface controller. The chip-select-interface controller communicates with a chip-select-interface type of memory. The SDRAM-interface controller is configured to communicate with one or more SDRAMs. The SDRAM-interface controller provides a plurality of interface signals to the SDRAM via a dedicated port. One of the interface signals, an SDRAM address/control signal, has a dual role. In one role, it serves as an address bit during memory transactions with the SDRAM. In a second role, it serves as a control signal that facilitates the refresh operation of the SDRAM.

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