Method and device for testing universal series bus equipment

A universal serial bus, device testing technology, applied in error detection/correction, instrumentation, calculation, etc., can solve the problems of inconvenience, increase cost, reduce development efficiency of USB devices, etc., to improve development efficiency and reduce cost. Effect

Active Publication Date: 2010-06-30
BYD SEMICON CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this treatment will bring the following problems: If there is a problem with one or some logical functions of the USB DEVICEController during the test, the device entity needs to be modified, which is very inconvenient to implement, thereby greatly reducing the development of USB devices. efficiency, and increased cost

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  • Method and device for testing universal series bus equipment
  • Method and device for testing universal series bus equipment
  • Method and device for testing universal series bus equipment

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Embodiment Construction

[0018] Aiming at the problems existing in the prior art, the present invention proposes a brand-new USB device testing scheme.

[0019] Since testing the USB DEVICE Controller as a device entity will cause problems, consider testing the USB DEVICE Controller in the form of code, so that if problems are found during the test, debugging can be easily performed. However, if the USB DEVICEController is a digital logic circuit, and the USB host and USB PHY are still physical devices, then how to integrate them for simulation testing will be difficult to achieve.

[0020] Therefore, in the solution of the present invention, considering that there is only a digital interface between the USB DEVICE Controller and the USB PHY, the USB host and the USB PHY are taken as a whole, and their pure logic simulation model is established, and the simulation model is used to simulate the USB The functions of the host and USB PHY communicate with the digital logic circuit corresponding to the USB DEVI...

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Abstract

The invention discloses a method for testing universal series bus equipment. The method comprises the following steps: realizing a universal series bus device controller (USB DEVICE Controller), a universal series bus (USB) host machine and a universal series bus (USB) physical (PHY) transceiver in a digital logic form; using the USB host machine and the USB PHY as a whole body; establishing pure logic simulation models of the USB host machine and the USB PHY; simulating the functions of the USB host machine and the USB PHY by using the simulation models; and achieving the aim for testing a digital logic circuit corresponding to the USB DEVICE Controller by communicating the digital logic circuit corresponding to the USB DEVICE Controller. The invention discloses a device for testing the universal series bus equipment. By applying the method and the device, the development efficiency of the USB equipment can be improved and the cost can be reduced.

Description

Technical field [0001] The present invention relates to Universal Serial Bus (USB, Universal Serial Bus) technology, in particular to a testing method and device in the development process of USB equipment. Background technique [0002] Existing USB devices are mainly composed of two parts: a USB physical transceiver (PHY) and a USB device controller (DEVICE Controller). The USB device can be connected to the USB host (HOST) through the USB interface. Such as figure 1 As shown, figure 1 It is a schematic diagram of the connection between the existing USB device and the USB host. When the USB device is inserted into the USB host (also including a USB PHY), the USB host uses the voltage change of the USB interface to determine whether there is a USB device inserted. If so, it further determines whether the USB device is a high-speed device, a low-speed device or a full-speed device. Device; after that, the enumeration process is carried out until the USB device works normally. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/267
Inventor 孙纪彪郭平日项春亮
Owner BYD SEMICON CO LTD
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