CN2662334Y

CN2662334Y - Data line adapter

Info

Publication number: CN2662334Y
Application number: CNU2003201189658U
Authority: CN
Inventors: 凌志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-05
Filing date: 2003-12-05
Publication date: 2004-12-08
Anticipated expiration: 2013-12-05

Abstract

The utility model relates to a data cable adapter, comprising a PCB board on which a USB plug, a USB-RS232 bridge and a female connector are arranged; wherein, the DM terminal and the DP terminal of the USB-RS232 bridge are connected with a pin 2 and a pin 3 of the USB plug respectively; the power terminal and the ground terminal of the USB-RS232 are connected with a pin 1 and a pin 4 of the USB plug respectively and the DCD, RXD, TXD, DTR, DSR, RTS, CTS and RI terminals are connected with corresponding pins of the female connector. The data cable adapter fitted with different data cables can be suitable for a plurality of models of mobile phones and other terminal devices. Therefore, the consumers need just to buy data cables instead of the whole mobile phone data cables when changing a new mobile phone. Besides, the utility model has the advantages of simple structure, easy assembling and test.

Description

The data line adapter

Technical field

The utility model relates to the device of terminal device exchange messages such as computing machine and mobile phone, specifically is a kind of data line adapter.

Background technology

At present, USB interface is converted to the cellular phone data line of RS232 interface, every money line can only be fit to the mobile phone of a few money models of a certain brand, mobile phone for other brand and model, must buy whole cellular phone data line in addition, and the line of prior USB interface RS 232 interface generally all is a fixed interface, can only be used as the special purpose that USB changes serial ports, can not do cellular phone data line and use, also cannot give any power devices.

In addition, test to existing cellular phone data line, must be after production finishes, just can test,, be difficult to monitoring product quality in process of production because there is not unified specification, production efficiency is low, the rework rate height, and, for every money data line, finished product need be tested respectively with different mobile phones, and the speed of test is slow.

Summary of the invention

In order to overcome the prior art above shortcomings, the utility model provides a kind of data line adapter.

The utility model data line adapter comprises pcb board 5, USB plug 1, USB-RS232 bridge 2 and connector female seat 4 are set on the pcb board 5, the DM end of USB-RS232 bridge 2 and DP end connect 2 pin and 3 pin of USB plug 1 respectively, the power end of USB-RS232 bridge 2 and ground end connect 1 pin and 4 pin of USB plug 1 respectively, and the DCD of USB-RS232 bridge 2, RXD, TXD, DTR, DSR, RTS, CTS, RI end are connected with the respective pin of connecting connector female seat 4.

The notebook data line adapter cooperates different data lines can be fit to mobile phone and other terminal device of multiple model, after the consumer changes new cell-phone, need not buy whole cellular phone data line, only needs the purchase data line, and is in addition, simple in structure, be easy to Installation And Test.

Description of drawings

Fig. 1 is the structural representation of the utility model exemplary embodiments;

Fig. 2 is its circuit diagram;

Fig. 3 is the structural representation of another exemplary embodiments of the utility model.

Embodiment

Further specify below in conjunction with accompanying drawing.

Embodiment 1:

As shown in Figure 1, the notebook data line adapter comprises pcb board 5, USB plug 1, USB-RS232 bridge 2 and connector female seat 4 are set on the pcb board 5, the DM end of USB-RS232 bridge 2 and DP end connect 2 pin and 3 pin of USB plug 1 respectively, the power end of USB-RS232 bridge 2 and ground end connect 1 pin and 4 pin of USB plug 1 respectively, the DCD of USB-RS232 bridge 2, RXD, TXD, DTR, DSR, RTS, CTS, RI hold 1,2,3,4,6,7,8,9 pin of connecting connector female seat 4 successively, 5 pin ground connection of connector female seat 4.

Present embodiment also comprises a switch 3, and switch 3 is arranged on the

pcb board

5,1 pin of a wiring termination USB plug 1 of

switch

3,10 pin of another terminals connecting connector female seat 4 of switch 3.When switch 3 was pushed open mode, the power supply that is connected to 1 pin of USB plug 1 can be by the notebook data line adapter directly to power devices such as mobile phones.

In the present embodiment, connector female seat 4 and USB plug 1 are welded in the left and right two ends of pcb board 5 respectively.

With reference to Fig. 2, the USB-RS232 bridge 2 of present embodiment adopts integrated circuit U1 (PL-2303), between 27 pin of U1 and 28 pin and meet crystal oscillator Y1, be used for providing clock signal to U1,9 pin of U1,10 pin, 11 pin and 22 pin connect respectively and draw resistance R 5, R4, R3, R8,1 pin of U1 and+the 5V power supply between series limiting resistor R1 and light emitting diode D1,5 pin of U1 and+the 5V power supply between series limiting resistor R2 and light emitting diode D2, D1 and D2 are used for indication and are sending data or receiving data, 23 pin of U1 meet pull down resistor R7, meet the magnetic bead L1 that suppresses undesired signal between 1 pin of USB plug 1 and the power supply, meet the magnetic bead L2 that suppresses undesired signal between 4 pin of USB plug 1 and the ground, C1 among this figure, C2, C3, C4, C5, C6, CD1, CD2 is power filtering capacitor, and the K1 among the figure is the switch 3 among Fig. 1.

Following table has been listed the pin definitions of integrated circuit PL-2303:

Sequence number	Title	Type	Pin definitions	Sequence number	Title	Type	Pin definitions
Sequence number	Title	Type	Pin definitions	Sequence number	Title	Type	Pin definitions		1	TXD	O	Data are exported to serial ports	15	DP	I/O	The usb data line
2	DTR-N	O	Data terminal ready	16	DM	I/O	The usb data line		1	TXD	O	Data are exported to serial ports	15	DP	I/O	The usb data line
2	DTR-N	O	Data terminal ready	16	DM	I/O	The usb data line	3	RTS-N	O	Request sends	17	VDD-3V3	P	The USB power supply
4	VDD-232	P	The serial ports power supply	18	GND-3V3	P	USB ground	3	RTS-N	O	Request sends	17	VDD-3V3	P	The USB power supply
4	VDD-232	P	The serial ports power supply	18	GND-3V3	P	USB ground	5	RXD	I	Data Receiving	19	RESET	I	Systematic reset signal
6	RI-N	I	The ring indication	20	VDD	P	Power supply	5	RXD	I	Data Receiving	19	RESET	I	Systematic reset signal
6	RI-N	I	The ring indication	20	VDD	P	Power supply	7	GND	P	Ground		21	GND	P		Ground
8	VDD	P	Power supply		22	TRI-STATE	I	7	GND	P	Ground		21	GND	P	The serial ports output state	Ground
8	VDD	P	Power supply		22	TRI-STATE	I	9	DSR-N	I	Number passes ready	23	LD-MD	I/O	The guiding " shut " mode" is selected	The serial ports output state
10	DCD-N	I	Received signal detects	24	VDD-PLL	P	The PLL power supply	9	DSR-N	I	Number passes ready	23	LD-MD	I/O	The guiding " shut " mode" is selected
10	DCD-N	I	Received signal detects	24	VDD-PLL	P	The PLL power supply	11	CTS-N	I	Clear to send	25	GND-PLL	P	PLL ground
12	SHTD-N	O	Close serial ports	26	PLL-TEST	I	The control of PLL test pattern	11	CTS-N	I	Clear to send	25	GND-PLL	P	PLL ground
12	SHTD-N	O	Close serial ports	26	PLL-TEST	I	The control of PLL test pattern	13	EE-CLK	I/O	Serial ROM clock	27	OSC1	I	The crystal oscillator input
14	EE-DATA	I/O	Serial ROM data line	28	OSC2	O	Crystal oscillator output	13	EE-CLK	I/O	Serial ROM clock	27	OSC1	I	The crystal oscillator input

Embodiment 2:

Embodiment 2 is all identical with the major part of embodiment 1, its difference only is: embodiment 2 utilizes diode 6 to replace switch 3 among the embodiment 1, as shown in Figure 3, and in embodiment 2, the positive pole of described diode 6 connects 1 pin of

USB plug

1,10 pin of the negative pole connecting connector female seat 4 of diode 6.During use, the power supply that is connected to 1 pin of USB plug 1 is given the equipment charges such as mobile phone that are connected on the connector female seat 4 by diode 6, and after being full of electricity, diode positive and negative electrode voltage equates, diode is in cut-off state, stops to butt up against the equipment charges such as mobile phone on the connector female seat 4.

Claims

1, a kind of data line adapter, it is characterized in that: comprise pcb board (5), USB plug (1), USB-RS232 bridge (2) and connector female seat (4) are set on the pcb board (5), the DM end of USB-RS232 bridge (2) and DP end connect 2 pin and 3 pin of USB plug (1) respectively, the power end of USB-RS232 bridge (2) and ground end connect 1 pin and 4 pin of USB plug (1) respectively, and DCD, the RXD of USB-RS232 bridge (2), TXD, DTR, DSR, RTS, CTS, RI end are connected with the respective pin of connecting connector female seat (4).

2, data line adapter according to claim 1 is characterized in that: described USB-RS232 bridge (2) adopts integrated circuit PL-2303.

3, data line adapter according to claim 1 is characterized in that: also comprise a switch (3), 1 pin of a wiring termination USB plug (1) of switch (3), the respective pin of another terminals connecting connector female seat (4) of switch (3).

4, data line adapter according to claim 1 is characterized in that: also comprise a diode, the positive pole of diode connects 1 pin of USB plug (1), the respective pin of the negative pole connecting connector female seat (4) of diode.