Bank sharing and refresh in a shared multi-port memory device

Details Bank sharing and refresh in a shared multi-port memory device Bank sharing and refresh in a shared multi-port memory device

2011-08-16

2011-08-16

Thomas, Shane M (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C711SE12048

Reexamination Certificate

active

08001334

ABSTRACT:
A method and system for sharing banks of memory in a multi-port memory device between components is provided. The multi-port memory device includes multiple ports to which components of a system are attached, and multiple banks of memory within the multi-port memory device that are shared by each of the ports. A bank availability pin is added to each port for each bank of memory. The bank availability pin is signaled when the bank is available to a particular port and unsignaled when the bank is unavailable. Thus, the multi-port memory device can be shared by several components simultaneously with only a small amount of additional hardware to support the sharing. Also provided are methods for refreshing the banks of memory.

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