A data signal processing method and device for an embedded multimedia card emmc
An embedded multimedia and data signal processing technology, applied in the field of signal processing, can solve the problems of expensive, troublesome, additional purchases, etc., and achieve the effect of low cost
Active Publication Date: 2022-05-13
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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[0003] At present, the consistency analysis software of the oscilloscope can be used to measure the read and write timing parameters. The consistency analysis software of the oscilloscope integrates the function of logic analysis, and can judge whether the current direction of the DATA signal is reading or writing by analyzing the CLK signal and the CMD signal. However, This method needs to measure 3 signals (CLK, CMD, DATA) at the same time, which is cumbersome, and the optional parts of the consistency analysis software of the oscilloscope need to be purchased additionally, and the price is relatively expensive
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[0055] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0056] refer to figure 1 , shows a flow chart of the steps of a data signal processing method of an embedded multimedia card eMMC of the present invention, the eMMC is connected to the preset electronic chip, and the method may specifically include the following steps:
[0057] Step 102, obtaining the first bidirectional command and response signal CMD signal and the second bidirectional command and response signal CMD signal transmitted between the eMMC and the preset electronic chip, and obtaining the eMMC and the preset electronic chip The first bidirectional data signal DATA signal and the second bidirectional data signal DATA signal transmitted between them.
[0058] In the embodiment of the present invention, the preset ele...
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Embodiments of the present invention provide a data signal processing method and device for an embedded multimedia card eMMC, the method comprising: obtaining the first CMD signal and the second CMD signal transmitted between the eMMC and the preset electronic chip, and obtaining the eMMC and the preset electronic chip Set the first DATA signal and the second DATA signal transmitted between the electronic chips; Determine the CMD write signal and the CMD read signal in the first CMD signal and the second CMD signal; Detect the Tr value of the CMD write signal and the CMD read signal, and Detect the Tr value of the first DATA signal and the second DATA signal; determine the DATA write signal and the DATA read signal from the first DATA signal and the second DATA signal according to the Tr value of the CMD write signal and the CMD read signal; separate the DATA Write signal and DATA read signal. The embodiment of the present invention does not need to analyze the content of the data to judge the direction of the DATA signal through logical analysis of the consistency analysis software, which has the advantages of simplicity, quickness and low cost.
Description
technical field [0001] The invention relates to the technical field of signal processing, in particular to a data signal processing method and device for an embedded multimedia card eMMC. Background technique [0002] eMMC (Embedded Multi Media Card, embedded multimedia card) consists of an embedded storage solution with MMC (Multi Media Card, multimedia card) interface, flash memory device and main controller. The CLK signal (Clock, clock signal) in eMMC is unidirectional, and the CMD signal (Command, bidirectional command and response signal) and DATA signal (Data, bidirectional data signal) are bidirectional. In the actual measurement, it is necessary to determine the input and output directions of the DATA signal in order to accurately measure the measurement items of the input and output directions. [0003] At present, the consistency analysis software of the oscilloscope can be used to measure the read and write timing parameters. The consistency analysis software of...
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IPC IPC(8): G06F13/10
CPCG06F13/10G06F13/4072G06F13/4265G01R31/2825G01R29/0276
Inventor 胡国振
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD