Multiple level converter of mobile communication terminal

Abstract

The invention relates to a multiple potential transformer of mobile communication terminal, which can support the multiple ports of coupled testing operation group, general asynchronous receiver, and general serial bus, to realize high-speed data communication via variable interfaces between PC and mobile communication terminal, wherein the 1 port of general asynchronous receiver / sender and the general serial bus port are connected to the communication port of mobile communication terminal; the 2 port of general asynchronous receiver / sender and the hand-free port via the switcher share one pointer with the port of couple testing operation group, based on the selection of switcher, to use one coupled testing operation group port or general asynchronous receiver / sender 2+TA / HF port. The invention can support the multiple ports of coupled testing operation group, RS-232, and general serial bus, to realize high-speed data communication between PC and mobile communication terminal.

Description

technical field [0001] The present invention relates to a multiple level conversion device of a mobile communication terminal, in particular to a multi-port supporting JTAG, RS-232 (UART: Universal Asynchronous Receiver Receiver) and USB, which can pass through multiple interfaces between a PC and a mobile communication terminal A multiple level conversion device for mobile communication terminals that realizes high-speed data communication. Background technique [0002] Generally speaking, the level translator (LT: Level Translator) provides support to enable data communication between the computer and the mobile communication terminal. In addition, it also supports software download, status monitoring of the mobile communication terminal (DM: Diagnostic Monitoring), To provide support for audio test functions, this existing level shifter has the following functions. [0003] That is, after the existing level conversion device downloads the utility program provided by the ...

AI Technical Summary

Problems solved by technology

[0005] Especially recently, universal serial bus (USB: universal serial bus), universal asynchronous transceiver (UART: Universal Asynchronous Receiver Transmitter), joint test action group (JTAG: Joint Test Action Group), hands-free devices and other receiving and sending functions and The types are increasing day by day, but the number of I / O pins of mobile communication terminals is physically limited. Especially for domestic mobile communication terminals, the pin usage is also regulated, and there is a problem that all these various data interfaces cannot be used.

[0006] Therefore, in order to overcome this problem, although some multi-purpose products have been developed, these products also need to use a plurality of DIP switches and switch them manually, so there is a problem that it is difficult to use if the user is not familiar with its usage method

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