CN103346771A - Multi-channel switching control circuit compatible with two kinds of protocols and control method - Google Patents
Multi-channel switching control circuit compatible with two kinds of protocols and control method Download PDFInfo
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- CN103346771A CN103346771A CN2013101680262A CN201310168026A CN103346771A CN 103346771 A CN103346771 A CN 103346771A CN 2013101680262 A CN2013101680262 A CN 2013101680262A CN 201310168026 A CN201310168026 A CN 201310168026A CN 103346771 A CN103346771 A CN 103346771A
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Abstract
Disclosed in the invention is a multi-channel switching control circuit compatible with two kinds of protocol. The control circuit comprises a one-key pulse control module, a function control module with an independent pin and a logic determination module; an output terminal of the one-key pulse control module and an output terminal of the function control module with an independent pin are respectively connected with an input terminal of the logic determination module; and an output terminal of the logic determination module outputs a channel switching control signal. In addition, the invention also discloses a control method employed by the multi-channel switching control circuit. The function control module with an independent pin includes a high-level input terminal, a low-level input terminal and a function control input terminal; and the logic determination module is respectively compared with levels between the high-level input terminal and the low-level input terminal according to the function control input terminal so as to select to output different channel switching control signals. The provided circuit is compatible with two kinds of communication protocols and multi-channel selection can be reasonably controlled according to a situation of I/O resources; great flexibility is provided for the system design; and the provided circuit can adapt to more system designs.
Description
Technical field
The present invention relates to a kind of multichannel control switching circuit and control method, relate in particular to a kind of multichannel control switching circuit and control method of compatible two kinds of agreements.
Background technology
Often need switch multichannel in the integrated circuit (IC) design, so can use corresponding control switching circuit.At present, the multichannel control switching circuit mainly contains the function control circuit module of a key pulse control circuit module and individual pin, and existing multichannel control switching circuit is all only selected wherein a kind of circuit module, so all have only a kind of agreement.
Along with the hyundai electronics development of information industry, electronic product develops to the diversification direction, the control method of having only a kind of agreement has lacked the flexibility of design in system's design, also be unfavorable for the resources effective utilization, has very big limitation in the design of modern novel electron system.Be embodied in: the function control circuit module of individual pin can cause the waste of I/O resource to system's design because it needs independent control I/O to control, and is unfavorable for resources effective application and reasonable distribution under the situation of the I/O of master control resource scarcity; One key pulse control circuit module is because its multiplexing characteristic, can allow the design of system more complicated and increase the difficulty of design, can cause the waste of design cost in the resourceful design of I/O, and reduce the reliability of system.
Summary of the invention
Purpose of the present invention just is to provide in order to address the above problem a kind of multichannel control switching circuit and control method of compatible two kinds of agreements.
In order to achieve the above object, the present invention has adopted following technical scheme:
The multichannel control switching circuit of compatible two kinds of agreements of the present invention comprises functional control module and the logic judgment module of a key pulse control module, individual pin, the output of the output of a described key pulse control module and the functional control module of described individual pin is connected with the input of described logic judgment module respectively, the output output channel switch-over control signal of described logic judgment module.
Particularly, described logic judgment module comprises four not gates, four and door, two NOR gate and a multiplexer, the input of first not gate respectively with an output of the functional control module of described individual pin, the 3rd with the door input with the 4th with corresponding connection of input, the input of second not gate respectively with another output of the functional control module of described individual pin, second with the door input with the described the 3rd with input be connected, the output of described first not gate is connected with the input of door with described second with the input of door with first respectively, the output of described second not gate is connected with the input of door with the described the 4th with the input of door with described first respectively, described first with the door output, described second with the door output with the described the 3rd with output be connected with the input of first NOR gate respectively, the described the 3rd with the door output with the described the 4th with output be connected with the input of second NOR gate respectively, the output of described first NOR gate is connected with the input of the 3rd not gate, the output of described second NOR gate is connected with the input of the 4th not gate, the output of the output of described the 3rd not gate and described the 4th not gate is connected with two signal input parts of described multiplexer respectively, the output of a described key pulse control module is connected with the selection input of described multiplexer, the output output channel switch-over control signal of described multiplexer.
The functional control module of the described individual pin in the control method that the multichannel control switching circuit of compatible two kinds of agreements of the present invention adopts comprises the high level input, low level input and function control input end, when the level of the output signal of described function control input end (this output signal had not only comprised switching signal but also comprised that logic judges signal) was higher than the level of described high level input or is lower than the level of described low level input, described logic judgment module was selected output signal according to the different potentials of the output signal of the output signal of a described key pulse control module and described function control input end; When the output signal level of described function control input end was lower than the level of described high level input and is higher than the level of described low level input, the output of described logic judgment module was exported the output end signal of a described key pulse control module.
Beneficial effect of the present invention is:
Compatibility of the present invention two kinds of communication protocols select with the control multichannel, provide sizable flexibility for system design, can adapt to more system and design; Can be according to the situation choose reasonable control mode of I/O resource when system designs: under the resourceful situation of I/O, can select to control with function pin independently, be conducive to reduce the complexity of system's design like this; And control with the mode of a key pulse complexing pin next can the selection of the situation of I/O resource scarcity, can save control port with the cost of reduction system design.
Description of drawings
Fig. 1 is the The general frame of the multichannel control switching circuit of compatible two kinds of agreements of the present invention;
Fig. 2 is the circuit diagram of logic judgment module of the present invention;
Fig. 3 is the circuit diagram of a key pulse control module of the present invention;
Fig. 4 is the circuit diagram of the functional control module of individual pin of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described in detail:
As shown in Figure 1, the multichannel control switching circuit of compatible two kinds of agreements of the present invention comprises functional control module and the logic judgment module of a key pulse control module, individual pin, the output of the output of one key pulse control module and the functional control module of individual pin is connected with the input of logic judgment module respectively, the output output channel switch-over control signal of logic judgment module.
As shown in Figure 2, logic judgment module comprises four not gates, four and door, two NOR gate and a multiplexer 41, the input of first not gate 11 is seen Fig. 4 with an output terminals A BPIN(of the functional control module of individual pin respectively), the 3rd with door 23 input with the 4th with corresponding connection of input of 24, the input of second not gate 12 is seen Fig. 4 with another output DPIN(of the functional control module of individual pin respectively), second is connected with 23 input with the 3rd with door 22 input, the output of first not gate 11 is connected with the input of door 22 with second with the input of door 21 with first respectively, the output of second not gate 12 is connected with the input of door 24 with the 4th with the input of door 21 with first respectively, first with door 21 output, second is connected with the input of first NOR gate 31 respectively with 23 output with the 3rd with door 22 output, the 3rd is connected with the input of second NOR gate 32 respectively with 24 output with the 4th with door 23 output, the output of first NOR gate 31 is connected with the input of the 3rd not gate 13, the output of second NOR gate 32 is connected with the input of the 4th not gate 14, the output of the output of the 3rd not gate 13 and the 4th not gate 14 is connected with two signal input parts of multiplexer 41 respectively, the output SD(of one key pulse control module sees the output SD of Fig. 3) be connected the output output channel switch-over control signal of multiplexer 41 with the selection input of multiplexer 41.Multiplexer 41 is conventional device, is also referred to as controllable inverter, and concrete structure is seen shown in Figure 2.
As shown in Figure 3, a key pulse control module adopts conventional structure, is made of a not gate and two triggers.
As shown in Figure 4, the functional control module of individual pin adopts conventional structure, is made of two comparators and four not gates.
In conjunction with Fig. 1, Fig. 3 and Fig. 4, the functional control module of the individual pin in the control method that the multichannel control switching circuit of compatible two kinds of agreements of the present invention adopts comprises high level input V1, low level input V2 and function control input end IN, when the output signal level of function control input end IN was higher than the level of high level input V1 or is lower than the level of low level input V2, logic judgment module was selected output signal according to the different potentials of the output signal of the output signal of a key pulse control module and function control input end IN; When the output signal level of function control input end IN is lower than the level of high level input V1 and is higher than the level of low level input V2, the output of logic judgment module is exported the output end signal of a key pulse control module, thereby realizes the purpose according to the situation choose reasonable control mode of I/O resource.
Above-described embodiment only is based on a preferred embodiment of basic technical scheme of the present invention; can not limit protection scope of the present invention with this; any circuit of the present invention is done parts replacement well know in the art, combination, discrete; and control method of the present invention is done well know in the art being equal to change or replace, all do not exceed the protection range of patent of the present invention.
Claims (3)
1. the multichannel control switching circuit of two kinds of agreements of a compatibility, the functional control module that comprises a key pulse control module and individual pin, it is characterized in that: also comprise logic judgment module, the output of the output of a described key pulse control module and the functional control module of described individual pin is connected with the input of described logic judgment module respectively, the output output channel switch-over control signal of described logic judgment module.
2. the multichannel control switching circuit of compatible two kinds of agreements according to claim 1, it is characterized in that: described logic judgment module comprises four not gates, four and door, two NOR gate and a multiplexer, the input of first not gate respectively with an output of the functional control module of described individual pin, the 3rd with the door input with the 4th with corresponding connection of input, the input of second not gate respectively with another output of the functional control module of described individual pin, second with the door input with the described the 3rd with input be connected, the output of described first not gate is connected with the input of door with described second with the input of door with first respectively, the output of described second not gate is connected with the input of door with the described the 4th with the input of door with described first respectively, described first with the door output, described second with the door output with the described the 3rd with output be connected with the input of first NOR gate respectively, the described the 3rd with the door output with the described the 4th with output be connected with the input of second NOR gate respectively, the output of described first NOR gate is connected with the input of the 3rd not gate, the output of described second NOR gate is connected with the input of the 4th not gate, the output of the output of described the 3rd not gate and described the 4th not gate is connected with two signal input parts of described multiplexer respectively, the output of a described key pulse control module is connected with the selection input of described multiplexer, the output output channel switch-over control signal of described multiplexer.
3. the control method that adopts of the multichannel control switching circuit of compatible two kinds of agreements as claimed in claim 1, the functional control module of described individual pin comprises the high level input, low level input and function control input end, it is characterized in that: when the output signal level of described function control input end was higher than the level of described high level input or is lower than the level of described low level input, described logic judgment module was selected output signal according to the different potentials of the output signal of the output signal of a described key pulse control module and described function control input end; When the output signal level of described function control input end was lower than the level of described high level input and is higher than the level of described low level input, the output of described logic judgment module was exported the output end signal of a described key pulse control module.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542017A (en) * | 2018-12-13 | 2019-03-29 | 珠海格力电器股份有限公司 | Communication circuit switching method and communication circuit switching circuit |
| CN110119109A (en) * | 2019-04-10 | 2019-08-13 | 汉腾汽车有限公司 | A kind of high effectively low effective compatible type input circuit of automobile controller |
| CN111398786A (en) * | 2020-04-02 | 2020-07-10 | 上海燧原科技有限公司 | Switching control circuit, system-on-chip, chip test system and method |
| CN111865423A (en) * | 2019-04-24 | 2020-10-30 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN112630621A (en) * | 2020-12-16 | 2021-04-09 | 北京集创北方科技股份有限公司 | Pin short circuit detection circuit and detection method |
| CN114048159A (en) * | 2022-01-11 | 2022-02-15 | 深圳市微源半导体股份有限公司 | Port multiplexing circuit and electronic equipment |
| CN115276172A (en) * | 2022-08-12 | 2022-11-01 | 深圳问鼎新能源技术有限公司 | New energy battery management system adaptive to inverter and control method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542017A (en) * | 2018-12-13 | 2019-03-29 | 珠海格力电器股份有限公司 | Communication circuit switching method and communication circuit switching circuit |
| CN109542017B (en) * | 2018-12-13 | 2023-11-21 | 珠海格力电器股份有限公司 | Communication circuit switching method and communication circuit switching circuit |
| CN110119109A (en) * | 2019-04-10 | 2019-08-13 | 汉腾汽车有限公司 | A kind of high effectively low effective compatible type input circuit of automobile controller |
| CN111865423A (en) * | 2019-04-24 | 2020-10-30 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN111865423B (en) * | 2019-04-24 | 2021-06-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN111398786A (en) * | 2020-04-02 | 2020-07-10 | 上海燧原科技有限公司 | Switching control circuit, system-on-chip, chip test system and method |
| CN111398786B (en) * | 2020-04-02 | 2020-12-25 | 上海燧原科技有限公司 | Switching control circuit, system-on-chip, chip test system and method |
| CN112630621A (en) * | 2020-12-16 | 2021-04-09 | 北京集创北方科技股份有限公司 | Pin short circuit detection circuit and detection method |
| CN112630621B (en) * | 2020-12-16 | 2023-04-28 | 北京集创北方科技股份有限公司 | Pin short circuit detection circuit and detection method |
| CN114048159A (en) * | 2022-01-11 | 2022-02-15 | 深圳市微源半导体股份有限公司 | Port multiplexing circuit and electronic equipment |
| CN114048159B (en) * | 2022-01-11 | 2022-04-22 | 深圳市微源半导体股份有限公司 | Port multiplexing circuit and electronic equipment |
| CN115276172A (en) * | 2022-08-12 | 2022-11-01 | 深圳问鼎新能源技术有限公司 | New energy battery management system adaptive to inverter and control method |
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| CN103346771B (en) | 2015-10-28 |
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Effective date of registration: 20191213 Address after: 211500 No. 95 Xingang Road, Longchi Street, Liuhe District, Nanjing City, Jiangsu Province Patentee after: Nanjing Susen Electronic Co., Ltd Address before: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 5 block A No. 2 A-320 Patentee before: Chengdu Moyi Technology Co., Ltd. |
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