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Conversion method of synchronous interface and asynchronous interface

A technology of asynchronous interface and synchronous interface, applied in instruments, electrical digital data processing, etc., can solve problems such as processor performance degradation, long read or write time, etc., to improve communication efficiency, reduce the number of pins, and reduce software. effect of operation

Inactive Publication Date: 2012-06-06
AVIC NO 631 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current traditional design, the ability of the processor to read FLASH will be limited by the bit width of FLASH data, which will inevitably lead to long reading or writing time, which will greatly reduce the performance of the processor.

Method used

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Embodiment Construction

[0020] The invention provides a synchronous interface and asynchronous interface conversion method, the method includes the following steps:

[0021] 1) Determine whether the synchronous interface will access the asynchronous interface, if so, then proceed to step 2), if not, then directly end;

[0022] 2) According to the type of the data interface, the access operation of the synchronous interface to the asynchronous interface is realized:

[0023] 2.1) Obtain the data interface type, the data interface includes a synchronous interface and an asynchronous interface; the synchronous interface type includes 16 bits, 32 bits, 64 bits or 128 bits; the asynchronous interface type includes 8 bits, 16 bits or 32 bits ;

[0024] 2.2) Obtain the access operation type performed by the synchronous interface to the asynchronous interface; the type of access operation performed by the synchronous interface to the asynchronous interface is that the synchronous interface reads the asynchr...

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PUM

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Abstract

The invention relates to a conversion method of a synchronous interface and an asynchronous interface. The method comprises the following steps of: 1) judging whether the synchronous interface carries out access operation on the asynchronous interface; if so, executing the step 2); and otherwise, directing finishing the step; and 2), realizing the access operation, which is carried out on the asynchronous interface by the synchronous interface, according to types of data interfaces. The invention provides the conversion method of the synchronous interface and the asynchronous interface, which has the advantages of supporting a processor core to carry out read-write access on 32 bits of a FLASH, obviously improving the efficiency of moving programs and obviously decreasing the quantity of external pins.

Description

technical field [0001] The invention belongs to the field of computer control and relates to a conversion method between a synchronous interface and an asynchronous interface. Background technique [0002] In the current integrated circuit design and use, the asynchronous interface FLASH is commonly used to store data such as transport layer software, boot software, loading software, and testing software. After the system is powered on, the processor generally moves the test software or transport layer software to SRAM / SDRAM to run through the moving program. In the current traditional design, the ability of the processor to read FLASH will be limited by the bit width of FLASH data, which will inevitably lead to long reading or writing time, which will greatly reduce the performance of the processor. Contents of the invention [0003] In order to solve the above-mentioned technical problems in the background technology, the present invention provides a synchronous interfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 田泽廖寅龙许宏杰赵强郭蒙
Owner AVIC NO 631 RES INST
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