Data processing device and method
A data processing device and pin technology, applied in the field of communication, can solve the problems of troublesome software upgrade, destructive work of the shell, etc., and achieve the effect of convenient development, debugging and production
Inactive Publication Date: 2009-06-10
LENOVO MOBILE COMM TECH
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Problems solved by technology
The disadvantage of this solution is that it is necessary to make a special shell or do destructive work on the shell during development, and it will be troublesome to upgrade the software after mass production
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[0037] In order to make the technical problems, technical solutions, and advantages to be solved by the embodiments of the present invention clearer, a detailed description will be given below with reference to the drawings and specific embodiments.
[0038] The embodiment of the present invention aims at the inconvenience of downloading software through the JTAG interface during the development, debugging, production and maintenance of advanced devices in the prior art, and provides a data processing device such as Figure 4 As shown, the device includes: a housing, a USB connector 1 port, which is arranged on the housing, and the USB connector 2 port includes at least the following pins: VBUS pin, D+ pin, D- pin , ID pin, GND pin and Shield pin on the case, wherein the GND pin of the USB connector port is grounded; JTAG interface 2 is set in the case, and the JTAG interface 2 includes at least the following Pins: TMS pin, TCK pin, TDI pin, TDO pin, TRST pin and GND pin, wherein ...
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The present invention provides a data processor and a method thereof, which relates to communication field. The data processor is invented for settling the problem that the software downloading through the JTGA interface is not convenient when a high-grade device in the prior art is developed, debugged, produced and maintained. The device of embodiment according to the invention comprises the following steps: a JTAG interface and an USB connector, wherein the shield pin of USB casing is connected with the test rest TRST pin of JTAG interface. The method of embodiment according to the invention comprises the following steps: obtaining a detection voltage value of the port of data processor casing when the data processor is detected to be inserted with a device; and comparing the detection voltage value with the preset voltage of comparator, and switching the signal to the USB connector or JTAG interface according to the comparing result. The debugging in developing the high-grade device, and software downloading in production and maintenance are facilitated according to the plan of the invention.
Description
Technical field [0001] The present invention relates to the field of communications, in particular to a data processing device and method. Background technique [0002] In the development, production, and maintenance of most advanced devices (such as mobile phones, digital cameras, PDAs, printers, digital signal processors, etc.), JTAG interfaces are often used to download and debug software. JTAG (Joint Test Action Group) is the IEEE1149.1 boundary scan test standard. The standard describes and specifies the test access and boundary scan architecture in detail. It is an international standard test protocol. For chips with JTAG interface, the definition of related JTAG interface pins is as figure 1 Shown: TMS (Test Mode Select, test mode selection) pin, used to set the JTAG interface in a specific test mode; TCK (Test Clock, test clock input) pin; TDI (Test Data Input, test data input ), the data is input to the JTAG interface through the TDI pin; TDO (Test Data Output), the dat...
Claims
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Inventor 李建邺
Owner LENOVO MOBILE COMM TECH