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USB-based AHB bus tracking test method and system

A bus test and bus technology, applied in error detection/correction, instrumentation, electrical digital data processing, etc., can solve problems such as inapplicability and inability to view bus operation errors, and achieve the effect of reducing the number of requirements

Inactive Publication Date: 2010-12-29
TECHTOTOP MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the above two methods, first, the simple method of sending stimulus can only be used to observe the bus operation under the condition of using external stimulus and then check whether the related equipment is working normally. When the processor is running in normal mode, if there is problem, unable to see if an operation transferred on the bus has errors
Second, both methods need to add a lot of external interfaces, which are not suitable for SOCs with a small number of pins

Method used

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  • USB-based AHB bus tracking test method and system
  • USB-based AHB bus tracking test method and system
  • USB-based AHB bus tracking test method and system

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] image 3 The flow chart of the AHB bus tracking method provided by the present invention specifically includes:

[0029] Step 1, control the bus through the USB module.

[0030] Most of the time, the AHB bus contains two or more hosts, and these hosts can obtain bus control authority by requesting bus access. The controller on the AHB bus will arbitrate the bus control requests of all hosts. Finally, the authority of the bus is assigned to one of the hosts.

[0031] In the present invention, the USB module is hung on the AHB bus as a host. The USB module should have the greatest priority...

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Abstract

The invention relates to an AHB bus test system, which comprises an AHB bus and a master device and a slave device which are connected with the AHB bus, wherein the AHB is also connected with a USB module; and the USB module comprises an AHB interface, an FIFO cache and a USB interface. After the technical scheme of the invention is adopted, an exciting test bus is directly input through the USB interface under the test condition so as to greatly reduce the requirement for the number of external ports. Meanwhile, the invention provides a tracking method so that the system can track a main processor to operate one or more external devices.

Description

technical field [0001] The invention relates to a USB-based AHB bus tracking testing method and system, and also provides a serial port-based AHB bus tracking testing method and system. Background technique [0002] figure 1 It is a typical SOC (System On Chip, System on Chip) based on AMBA AHB (Advanced High-performance Bus, Advanced High-performance Bus) architecture. It mainly includes AHB bus, high-performance processor, on-chip high-bandwidth RAM, high-performance DMA (Direct Memory Access, direct memory access) controller, high-bandwidth off-chip memory interface, APB (Advanced Peripheral Bus, advanced peripheral bus) UART (Universal Asynchronous Receive / Transmitter, universal asynchronous receive / transmitter) interface, SPI (Serial Peripheral Interface, serial peripheral interface) interface, IIC (Inter-Integrated Circuit, interactive integrated circuit) interface, GPIO on the bridge and the peripherals on the APB bus (General Purpose Input Output, general purpose i...

Claims

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Application Information

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IPC IPC(8): G06F11/267
Inventor 何毅华
Owner TECHTOTOP MICROELECTRONICS