CN202058139U - Serial port conversion module based on universal asynchronous receiver/transmitter (UART) serial port expansion chip - Google Patents
Serial port conversion module based on universal asynchronous receiver/transmitter (UART) serial port expansion chip Download PDFInfo
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- CN202058139U CN202058139U CN 201120188740 CN201120188740U CN202058139U CN 202058139 U CN202058139 U CN 202058139U CN 201120188740 CN201120188740 CN 201120188740 CN 201120188740 U CN201120188740 U CN 201120188740U CN 202058139 U CN202058139 U CN 202058139U
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Abstract
The utility model discloses a serial port conversion module based on a universal asynchronous receiver/transmitter (UART) serial port expansion chip, which is characterized by comprising a central processing unit (CPU) (1), more than one serial port expansion chip (2) connected with the CPU (1) and a UART serial port (3) connected with the serial port expansion chip (2). The serial port conversion module utilizes the serial port expansion chip to enable a plurality of UART serial ports to exchange data with the Ethernet simultaneously, thereby being capable of greatly reducing cost of embedded network equipment.
Description
Technical field
The utility model relates to Ethernet serial ports modular converter, especially relate to a kind of serial ports modular converter based on UART serial ports expansion chip.
Background technology
Existing Ethernet and UART serial ports modular converter are inner integrated ICP/IP protocol stack, the user utilizes it can easily finish the network function of embedded device, uses manpower and material resources sparingly and the development time, and product is put goods on the market faster, enhances the competitiveness.Ethernet and UART serial ports modular converter are used for the data transmission between serial ports and the Ethernet, can increase Ethernet interface for serial equipment easily.Can be used between UART serial equipment and the PC telecommunication between perhaps a plurality of UART serial equipments.This module is to user transparent, and the user does not need to understand complicated network knowledge and ICP/IP protocol.
But present Ethernet and UART serial ports modular converter only have only a UART serial ports, in some electronic application, several concentrated equipment or integrated circuit board need a plurality of UART serial ports, if configuration ethernet and UART serial ports modular converter one by one, not only the volume of equipment increases, and its cost also increases accordingly.
Summary of the invention
Thereby being to provide, the purpose of this utility model has a plurality of UART serial ports can reduce the built-in network equipment cost simultaneously with the Ethernet swap data a kind of serial ports modular converter based on UART serial ports expansion chip.
To achieve these goals, the technical solution adopted in the utility model is as follows: based on the serial ports modular converter of UART serial ports expansion chip, the main more than one serial ports expansion chip that is connected by CPU, with this CPU, and the UART serial ports that is connected with this serial ports expansion chip is formed.
Further, each serial ports expansion chip all is connected with plural UART serial ports in the mode of cascade.
According to actual needs, this UART serial ports can be connected with the serial ports expansion chip by lead, also can be embedded in the inside of serial ports expansion chip.
In order better to realize the utility model, the model that described serial ports expansion chip adopts is GM812x, GM814x, SP2327/8DP, SP2328, SP2538 or MAX3100.
Simultaneously, for the ease of being connected with external network, the utility model also is connected with network control chip on CPU, then is integrated with network interface on this network control chip.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model utilizes the serial ports expansion chip to realize a plurality of UART serial ports whiles and Ethernet swap data, therefore can greatly reduce the cost of built-in network equipment.
(2) serial ports expansion chip of the present utility model can be expanded two and above UART serial ports by the form of cascade, therefore can satisfy the requirement of a plurality of UART serial ports of user's needs.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram when the utlity model has a serial ports expansion chip.
Fig. 2 is the one-piece construction synoptic diagram when the utlity model has two serial ports expansion chips.
Wherein, the Reference numeral name in the accompanying drawing is called:
1-CPU, 2-serial ports expansion chip, 3-UART serial ports, 4-network control chip.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, the utility model is by CPU 1, a serial ports expansion chip 2 being connected with this CPU 1, and the UART serial ports 3 that is connected with this serial ports expansion chip 2 is formed.
According to the actual needs, the quantity of this UART serial ports 3 can be two, also can be for more than two.During connection, this UART serial ports 3 is connected with serial ports expansion chip 2 by the mode of cascade, and promptly this UART serial ports 3 both can adopt lead to be connected with serial ports expansion chip 2, also it directly can be embedded in serial ports expansion chip 2 inside.
In order to ensure result of use, these serial ports expansion chip 2 preferential employing models are a kind of realization the among GM812x, GM814x, SP2327/8DP, SP2328, SP2538, the MAX3100.
All can be connected in order to ensure each UART serial ports 3, so the utility model also is provided with the network control chip 4 that is connected with CPU 1, simultaneously, on this network control chip 4, also is integrated with network interfaces such as RJ45 such as RS232 with Ethernet.
Embodiment 2
Present embodiment is compared with embodiment 1, and difference only is the quantity difference of this serial ports expansion chip 2, and promptly the user can dispose the quantity of this serial ports expansion chip 2 arbitrarily according to the actual needs.
Structural representation when being 2 shown in Figure 2 for the quantity of this serial ports expansion chip 2, at this moment, if each serial ports expansion chip 2 all disposes 2 UART serial ports 3, just then can dispose 4 UART serial ports 3 in the present embodiment, thus satisfy user's demand.
According to above design, just can realize the utility model preferably.
Claims (7)
1. based on the serial ports modular converter of UART serial ports expansion chip, it is characterized in that: mainly by CPU(1), with this CPU(1) the more than one serial ports expansion chip (2) that is connected, and the UART serial ports (3) that is connected with this serial ports expansion chip (2) is formed.
2. the serial ports modular converter based on UART serial ports expansion chip according to claim 1 is characterized in that: each serial ports expansion chip (2) all is connected with plural UART serial ports (3) in the mode of cascade.
3. the serial ports modular converter based on UART serial ports expansion chip according to claim 1 and 2 is characterized in that: described UART serial ports (3) is connected with serial ports expansion chip (2) by lead.
4. the serial ports modular converter based on UART serial ports expansion chip according to claim 1 and 2 is characterized in that: described UART serial ports (3) is embedded in the inside of serial ports expansion chip (2).
5. the serial ports modular converter based on UART serial ports expansion chip according to claim 4 is characterized in that: the model that described serial ports expansion chip (2) adopts is GM812x, GM814x, SP2327/8DP, SP2328, SP2538 or MAX3100.
6. according to claim 1,2 or 5 described serial ports modular converters, it is characterized in that: at described CPU(1 based on UART serial ports expansion chip) on also be connected with network control chip (4).
7. the serial ports modular converter based on UART serial ports expansion chip according to claim 6 is characterized in that: also be integrated with network interface on described network control chip (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120188740 CN202058139U (en) | 2011-06-07 | 2011-06-07 | Serial port conversion module based on universal asynchronous receiver/transmitter (UART) serial port expansion chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120188740 CN202058139U (en) | 2011-06-07 | 2011-06-07 | Serial port conversion module based on universal asynchronous receiver/transmitter (UART) serial port expansion chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058139U true CN202058139U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120188740 Expired - Fee Related CN202058139U (en) | 2011-06-07 | 2011-06-07 | Serial port conversion module based on universal asynchronous receiver/transmitter (UART) serial port expansion chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058139U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594106A (en) * | 2013-11-11 | 2014-02-19 | 无锡普雅半导体有限公司 | Serial memory chip capacity expansion structure |
| CN104216854A (en) * | 2014-09-03 | 2014-12-17 | 南京磐能电力科技股份有限公司 | Autonomous adaptation device and method for UART (Universal Asynchronous Receiver/Transmitter) serial port extended channel |
| CN109474798A (en) * | 2018-12-28 | 2019-03-15 | 安徽三人信息科技有限公司 | A kind of serial ports conversion HDMI display device |
| CN109491945A (en) * | 2018-11-05 | 2019-03-19 | 深圳市瑞驰信息技术有限公司 | A kind of system and method for UART cascade extension |
-
2011
- 2011-06-07 CN CN 201120188740 patent/CN202058139U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594106A (en) * | 2013-11-11 | 2014-02-19 | 无锡普雅半导体有限公司 | Serial memory chip capacity expansion structure |
| CN103594106B (en) * | 2013-11-11 | 2016-01-06 | 无锡普雅半导体有限公司 | A kind of serial memory chip capacity expansion structure |
| CN104216854A (en) * | 2014-09-03 | 2014-12-17 | 南京磐能电力科技股份有限公司 | Autonomous adaptation device and method for UART (Universal Asynchronous Receiver/Transmitter) serial port extended channel |
| CN104216854B (en) * | 2014-09-03 | 2017-09-15 | 南京磐能电力科技股份有限公司 | The path Autonomous adaptation device and method that a kind of UART serial ports is expanded |
| CN109491945A (en) * | 2018-11-05 | 2019-03-19 | 深圳市瑞驰信息技术有限公司 | A kind of system and method for UART cascade extension |
| CN109491945B (en) * | 2018-11-05 | 2021-11-09 | 深圳市瑞驰信息技术有限公司 | UART cascade extension system and method |
| CN109474798A (en) * | 2018-12-28 | 2019-03-15 | 安徽三人信息科技有限公司 | A kind of serial ports conversion HDMI display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20170607 |