Method and device for acquiring internal state data of chip

Abstract

An embodiment of the present invention relates to the field of electronic circuits. Provided are a method and device for obtaining internal status data of a chip; the method comprises: turning off the gated clock of a register in a synchronous circuit of a chip to keep the internal status data output by the register unchanged; reading the internal status data outputted by the register. The device comprises: a control unit used for turning off the gated clock of the register in the synchronous circuit of the chip to keep the internal status data output by the register unchanged; a reading unit used for reading the internal status data outputted by the register. The present invention obtains the internal status data of the chip via the technical solution, requiring no additional internal status data memory, and is thus freed from the restriction of the register memory capacity on obtaining the internal status data of the chip.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a method and device for acquiring state data inside a chip. Background technique [0002] During the chip application or testing process, when the chip has a problem, it is usually necessary to obtain the internal state data of the chip to locate the cause of the problem. [0003] At present, the method for obtaining the internal state data of the chip is: firstly store the internal state data of the synchronous circuit of the chip in a memory, and then read the internal state data stored in the memory from the external bus interface through the addressing circuit. However, to obtain the internal state data of the chip through the memory, it is necessary to configure a series of coordination circuits at the same time, which is expensive, and the capacity of the memory is limited. Sometimes there will be a problem that the internal state data cannot be stored because the memory ...

AI Technical Summary

Problems solved by technology

However, to obtain the internal state data of the chip through the memory, it is necessary to configure a series of coordination circuits at the same time, which is expensive, and the capacity of the memory is limited. Sometimes there will be a problem that the internal state data cannot be stored because the memory space is full.

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