Portable system and method for diagnosing single board based on JTAG

A technology of diagnosis system and diagnosis method, applied in the directions of instruments, measuring devices, measuring electricity, etc., can solve problems such as inconvenience in application occasions, and achieve the effect of flexible diagnosis method, portability and flexibility shortening

Active Publication Date: 2012-07-18
ZTE CORP
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Problems solved by technology

However, both types are based on the PC platform, which is inconvenient for the application of base stations installed in the wild

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  • Portable system and method for diagnosing single board based on JTAG
  • Portable system and method for diagnosing single board based on JTAG
  • Portable system and method for diagnosing single board based on JTAG

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Embodiment Construction

[0025] Below, refer to the attached Figure 1~4 The JTAG-based portable single-board diagnosis system and method of the present invention are described in detail.

[0026] Such as figure 1 Shown, the portable single-board diagnosis system based on JTAG of the present invention comprises diagnostic test equipment, backboard and a plurality of JTAG tested single boards, and wherein, diagnostic test equipment is used for scanning multiple JTAG on the backboard by bus connection The tested single board of the main interface loads the pre-stored diagnostic test program to the corresponding tested single board, and receives the test results returned by each tested single board; multiple JTAG tested single boards are connected to the back through the bus The JTAG main interface on the board executes the corresponding diagnostic test program loaded by the diagnostic test equipment, executes the corresponding test, and returns the test result to the diagnostic test equipment.

[0027...

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PUM

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Abstract

The invention provides a portable system and a method for diagnosing a single board based on JTAG. The system comprises a diagnosis test device, a rear panel and a plurality of JTAG single boards under test, wherein the diagnosis test device is used for scanning a plurality of single boards under test which are connected with a JTAG interface through a bus, loading a prestored diagnosis test program to the corresponding single boards under test and receiving test results returned by each single board under test; and the plurality of the JTAG single boards under test are connected to the JTAG interface through a bus, execute the corresponding diagnosis test program loaded by the diagnosis test device to perform corresponding tests and return the test results to the diagnosis test device. By adopting the invention, JTAGs of different single boards can be synchronously accessed under the condition that no PC computer is available, and the united diagnosis among the single boards as well as among chips in the single boards can be realized, thereby the response time of maintainers to failures is shortened, and research and development personnel can accurately acquire spot failure information.

Description

technical field [0001] The invention relates to the technical field of wireless communication and the field of integrated testing, in particular to a JTAG-based portable single-board diagnosis system and method. Background technique [0002] Due to the requirement of wireless communication technology, the base station is becoming more and more miniaturized. In this application situation, one is to force the base station single board to adopt a large number of very large scale integration (VLSI) and surface mount (SMT) technology, so that the physical accessibility of circuit nodes is gradually reduced or even disappears, and the circuit and system The testability drops sharply; the second is the reduction of the size of the base frame, and the compact installation of each functional board of the base station is a big challenge for the measurement of interconnection signals between boards. In this context, conventional diagnostic methods based on signal measurements are faci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/3185
Inventor 王国强
Owner ZTE CORP
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