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Data memory system and method for transferring data into a data memory

A data storage system, data storage technology, applied in electrical digital data processing, instrumentation, generation of response errors, etc.

Inactive Publication Date: 2007-03-07
QIMONDA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is a serious cost factor, since different protocols will thus be implemented for different types of DRAM

Method used

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  • Data memory system and method for transferring data into a data memory
  • Data memory system and method for transferring data into a data memory

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Experimental program
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Embodiment Construction

[0022] A memory controller 10 is shown in FIG. 1 , which controls the data exchange between the memory controller 10 and the memory 20 . Data may be read from or transferred to memory 20 . In one embodiment, the memory is DRAM, which can be used as the main memory of the computer system. When memory 20 is used in a high quality computer system, such as a network server, the memory requirements in terms of error immunity may be more stringent than those of relatively simple computer systems. If the integrity of the data stored in the memory is important, one type of memory used may be ECC memory. If data integrity is not a high priority, memory 20 may be a non-ECC memory.

[0023] Data exchange between the memory controller 10 and the memory 20 is performed via the data exchange protocol. The protocol includes different frames, such as command frames, write data frames, and optionally partial write data or data mask frames. For example, to transfer data, six pins will be pr...

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Abstract

A method for transferring data into a data memory using a data protocol is presented. The data memory is an error correction code (ECC) memory or a non-error correction code memory. The data protocol has different frames. When data are written into an ECC memory, the protocol includes a data mask frame in which the data mask bits are replaced by ECC bits. The method is designed such that ECC and non-ECC DRAMs can be established with the same protocol and at least a similar architecture.

Description

technical field [0001] The present invention relates generally to memory devices, and more particularly to DRAM data storage and methods for transferring data into the DRAM. Background technique [0002] The main memory of a computer system is typically formed using dynamic semiconductor memory chips (DRAM). For this purpose, multiple memory chips are combined on a small circuit board as a memory module. At least some of these memory modules then form the main memory. [0003] In the case of high quality computer systems, such as network servers or workstations, the memory must be relatively error-free compared to relatively simple computer systems, such as desktop computers. All RAM memory is subject to occasional errors due to factors such as power fluctuations, static discharges, faulty components, or improper system timing. However, in some computer systems, the stored data should be relatively free from error. For this purpose, these computer systems have so-called ...

Claims

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Application Information

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IPC IPC(8): G06F11/10
CPCG06F11/1052G06F13/4243
Inventor P·瓦尔纳D·萨维纳克C·西歇特T·海因
Owner QIMONDA
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