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On-chip signal acquisition method and device

A signal and signal input technology, applied in electrical digital data processing, instruments, detection of faulty computer hardware, etc., can solve problems such as the inability to identify the cause of abnormal data interaction

Active Publication Date: 2018-11-27
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a method and device for obtaining on-chip signals, so as to avoid the problem of being unable to find out the cause of abnormal data interaction due to the inability to view the on-chip information

Method used

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  • On-chip signal acquisition method and device

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Embodiment 1

[0042] This embodiment provides a method for acquiring an on-chip signal. The so-called on-chip signal refers to the signal output by the EMMC controller. see figure 2 , the shown on-chip signal acquisition method may include:

[0043] 202. The EMMC controller receives a switching instruction, and switches into a corresponding communication mode; wherein, the switching instruction is used to switch the bandwidth of the EMMC controller and instruct the controller to enter a 1-bit working mode. The corresponding communication mode is the 1-bit working mode. The 1-bit working mode is a working mode in which communication is performed in the form of 1-bit data, and in particular refers to a working mode in which 1-bit data is transmitted within one clock cycle.

[0044] 204. The EMMC controller communicates with the external device in the communication mode, and sends the output on-chip signal to the measuring device through the preset output pin.

[0045] The EMMC controller ...

Embodiment 2

[0047] This embodiment provides a method for acquiring an on-chip signal. The so-called on-chip signal refers to the signal output by the EMMC controller. see image 3 , the shown on-chip signal acquisition method may start from: when the EMMC controller determines that data interaction with the external device is abnormal, enter step 300 . .

[0048] 300. The EMMC controller receives an output setting instruction, and sets a preset output pin according to the output setting instruction. The output setting instruction includes a predetermined output pin identifier, and the setting of the preset output pin according to the output setting instruction may include:

[0049] Analyzing the output setting instruction to obtain an output pin identifier;

[0050] A preset output pin is determined according to the output pin identifier, and a signal output channel of the controller is connected to the preset output pin.

[0051] 301. The EMMC controller receives an input setting ins...

Embodiment 3

[0060] This embodiment provides a method for acquiring an on-chip signal. The so-called on-chip signal refers to the signal output by the EMMC controller. see Figure 4 , shows an applicable scenario of the on-chip signal acquisition method, including: an EMMC controller, a register interface connected to the EMMC controller, and an external device (ie, EMMC peripherals) connected to the EMMC controller.

[0061] The EMMC controller includes a line width conversion unit, an output selection unit and an input signal sending unit. The line width conversion unit is used to send switching instructions, so that the EMMC controller and the EMMC peripheral switch into the corresponding communication mode, and the EMMC controller and the EMMC peripheral only use data line 0 for data interaction. . The output selection unit is used to output the on-chip signal through the preset output pin. The input signal sending unit is used to send the external input signal to the corresponding ...

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PUM

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Abstract

Embodiments of the invention provide a method and an apparatus for obtaining an on-chip signal. The method comprises: receiving, by a controller, a switching instruction, and switching to a corresponding communication mode, wherein the switching instruction is used to switch bandwidth of the controller and instruct the controller to enter a one-bit working mode; and communicating, by the controller, with an external device in the communication mode, and sending an output on-chip signal to a measuring device by using a preset output pin. In the embodiments of the invention, an EMMC controller communicates with the external device in the one-bit working mode, and sends the output on-chip signal to the measuring device by using the preset output pin, so as to obtain the on-chip signal of the EMMC controller and observe and analyze the chip signal of the EMMC controller by using the measuring device. Irregular debugging in a complex scene can be performed, the on-chip signal of the EMMC controller can be sufficiently researched, and error cause checking can be performed when interaction with external data is abnormal.

Description

technical field [0001] The invention relates to electronic information design technology, in particular to an on-chip signal acquisition method and device. Background technique [0002] During the data interaction between the EMMC controller of the SOC chip and the EMMC controller peripheral data, if there is an abnormal data interaction, in order to find out the problem, in addition to grabbing the interface signals (such as clock signals, command signals and data signals) on the peripheral board, It is also necessary to be able to view the signals inside the EMMC controller. But this part of the signal belongs to the on-chip signal, which is generally not measurable or viewable. Contents of the invention [0003] To this end, the embodiments of the present invention provide a method and device for acquiring an on-chip signal, so as to avoid the problem of being unable to find out the cause of abnormal data interaction due to the inability to view the on-chip information...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/22G06F13/10
Inventor 林涛
Owner FUZHOU ROCKCHIP SEMICON