Program downloading method with JTAG interface terminal

A terminal and interface technology, which is applied in the field of program download of the interface terminal of the joint test action group, can solve the problems of high procurement cost, waste of manpower and material resources, and expensive emulator, so as to reduce the procurement cost and realize the function of overcurrent protection Effect

Active Publication Date: 2008-01-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the function of the emulator is not limited to program download, more importantly, it provides simulation debugging for R&D, which wastes manpower and material resources
Moreover, the price of the emulator is generally very expensive. If the emulator is purchased only to meet the needs of the program download function, the use value of the emulator will be greatly reduced. At the same time, the use of the emulator will lead to high procurement costs.

Method used

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  • Program downloading method with JTAG interface terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0057] In this embodiment, the download device shown in FIG. 2 is used, and the download device can complete interface conversion, interface communication and power supply functions. The download device includes an interface conversion unit 1, a power supply unit 2, and an optional external power supply unit 3.

[0058] Among them, the interface conversion unit 1 is used to convert the PC communication interface to a JTAG interface, that is, to convert the PC communication interface into a JTAG timing waveform in accordance with the regulations of the JTAG standard interface to complete the communication interaction between the PC and the terminal. At the same time, the control commands issued by the user through the human-computer interaction interface on the PC side are parsed into the terminal can recognize the JTAG-related timing waveforms, so that the terminal's processor can execute the processing corresponding to the control commands, and realize program download, read and ...

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PUM

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Abstract

The utility model discloses a method of program download which is provided with the interface terminal of joint test action group (JTAG). The method comprises the pre-set function on the download equipment when the power is on as well as the following procedures, namely, to equip and ascertain the working voltage of the JTAG interface terminal and the operating level of the JTAG interface, to make the download equipment supply power for the terminal, to initialize the terminal, to set the processor of the terminal in motion, to set the memory of the terminal into the regular read and write condition, to complete the download of the plug-in and to download the program code. The utility model can not only realize the program download, but reduce the high cost of emulator as well.

Description

Technical field [0001] The invention relates to a program downloading technology of a terminal, in particular to a program downloading method of a terminal with a joint test action group (JTAG, JOINT TESTACTION GROUP) interface. Background technique [0002] The JTAG protocol is an international standard test protocol, mainly used for chip internal testing. At present, most terminals support the JTAG protocol. Here, a terminal that supports the JTAG protocol is a terminal with a JTAG interface. Moreover, the JTAG interface, as a standard interface for many chips, can also be used to download programs. Since terminals with JTAG interface include mobile phones, network cards, modem devices and other types, there are many ways to download programs related to terminals with JTAG interface. Terminals with JTAG interface can use serial ports, parallel ports, and universal serial buses. (USB, Universal Serial Bus) interface, and Ethernet interface and other interfaces are directly downl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
Inventor 毛建华杜天波戚燃梁元钊
Owner ZTE CORP
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