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Chip-embedded USB to JTAG debugging device and debugging method

A debugging method and chip technology, applied in the detection of faulty computer hardware and functional inspection, etc., can solve the problems that multi-core integrated circuits are difficult to be accepted by users and difficult to be accepted by users of development boards, so as to improve debugging flexibility and reduce costs. Effect

Active Publication Date: 2015-04-22
HANGZHOU SILAN MICROELECTRONICS
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Problems solved by technology

Therefore, it has been difficult for users to accept multi-core integrated circuits, especially for development board users.

Method used

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  • Chip-embedded USB to JTAG debugging device and debugging method
  • Chip-embedded USB to JTAG debugging device and debugging method

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Embodiment Construction

[0034] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.

[0035] Secondly, the present invention is described in detail by means of schematic diagrams. When describing the examples of the present invention in detail, for the convenience of explanation, the schematic diagrams are not partially enlarged according to the general scale, which should not be used as a limitation of the present invention.

[0036] The present invention builds a USB-to-JTAG debugger by relying on the resources of the multi-core chip to complete the debugging of other central processing units (CPUs). The completed device can replace the external US...

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Abstract

The invention provides a chip-embedded USB to JTAG debugging device and debugging method. A circuit module is designed in a multicore chip, one end of the circuit module is connected with a co-processor serving as a control processor in the multicore chip, and the other end of the circuit module is connected with JTAG interfaces aggregation modules of debugging processors. The control processor is simultaneously connected with a USB transceiver, and through the control mode of a control processing module, the control processor converts commands sent by the transceivers into JTAG signals to perform debugging to each processor. Therefore, USB to JTAG debuggers between a peripheral PC terminal and a development board in debugging are saved, multiple CPUs in the multicore chip can be debugged online synchronously through software support, the cost of the development board is reduced, and the flexibility of debugging is improved.

Description

technical field [0001] The invention relates to the field of SOC integrated circuit design, in particular to a USB-to-JTAG debugging device embedded in a chip and a debugging method thereof. Background technique [0002] At present, the interfaces used for debugging of various development boards are JTAG interfaces, and USB transceivers are used for connecting to PCs (Personal Computers). Therefore, a USB-to-JTAG debugger must be used to connect the host and the development board to complete the connection and debugging of the main chip CPU in the development board. [0003] With the development of multi-core technology, there are various types of CPUs (Central Processing Units) in a multi-core integrated circuit. Since the debugging processors used by different CPUs are provided by different manufacturers, their functions and models are different. In this way, when debugging each different CPU, it is necessary to purchase a USB-to-JTAG debugger corresponding to each debugg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/26
Inventor 李飞泮建光
Owner HANGZHOU SILAN MICROELECTRONICS
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