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Memory controller and multi-memory system

A memory controller and memory technology, applied in static memory, digital memory information, instruments, etc., can solve the problems of many outgoing lines, limited pin resources, unfavorable costs, etc., and achieve the effect of reducing manufacturing costs and saving pin resources.

Active Publication Date: 2012-07-04
DAWNING INFORMATION IND BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for embedded systems, the pin resources are limited, and if the controller is added, it will lead to too many outgoing lines, increasing the difficulty of PCB (Printed Circuit Board, printed circuit board) wiring, thereby increasing the risk of system development; and the current RDIMM memory module The price of the DIMM is much higher than that of the DIMM, which is not conducive to cost saving

Method used

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  • Memory controller and multi-memory system
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Examples

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Embodiment Construction

[0018] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] like figure 1 Shown is a functional block diagram of a memory stick according to an embodiment of the present invention, the memory stick may be a SODIMM memory stick, wherein CS (chip select, chip select signal) 0, CS1, BA0-BA2 (bank address, in memory particles Address area address signal), A0~A13 / A14 (address, address line), RAS (Row Address Strobe, row address selection signal), CAS (Column Address Strobe, column address selection signal), WE (Write Enable, write enable signal ), CK (Clock, clock signal), CKE (Clock Enable, clock enable signal) 0, CKE1, ODT (On Die Terminator, on-chip terminator design signal) 0, ODT1 signals need to be connected to the entir...

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Abstract

The invention discloses a memory controller and a multi-memory system. The memory controller is used for being connected with memories through signal wires and controlling the memories, the memory controller comprises more than one group of first signal wire group, wherein, the signal wires in each group of the first signal wire group are applicable to connecting with each memory particle in the corresponding memory. The memory controller and the multi-memory system can realize the control of a plurality of memory cards by using one memory controller, save resources of pins and reduce manufacturing cost.

Description

technical field [0001] The present invention generally relates to the field of embedded system technology, and more specifically relates to a memory controller. Background technique [0002] Currently, a DDR2 (Double Data Rate 2, double data rate 2) memory controller can only have two DIMM (Dual Inline Memory Module, dual inline memory module) memory sticks at most. If you want to bring more memory sticks, you can add controllers (or multi-controller mode) or use RDIMM (Registered Dual In-line Memory Module) memory sticks instead of DIMM memory sticks. However, for embedded systems, the pin resources are limited, and if the controller is added, it will lead to too many outgoing lines, increasing the difficulty of PCB (Printed Circuit Board, printed circuit board) wiring, thereby increasing the risk of system development; and the current RDIMM memory module The price of DIMM is much higher than that of DIMM, which is not conducive to cost saving. [0003] Therefore, there i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C11/4063G11C11/401
Inventor 聂华邵宗有历军王栋梁李静许建卫刘新春
Owner DAWNING INFORMATION IND BEIJING