CN103885915A - Method for expanding bus of portable master station - Google Patents
Method for expanding bus of portable master station Download PDFInfo
- Publication number
- CN103885915A CN103885915A CN201410152389.1A CN201410152389A CN103885915A CN 103885915 A CN103885915 A CN 103885915A CN 201410152389 A CN201410152389 A CN 201410152389A CN 103885915 A CN103885915 A CN 103885915A
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- Prior art keywords
- bus
- scrambler
- master station
- extended
- portable main
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Abstract
The invention discloses a method for expanding a bus of a portable master station. Sixty four 2/4 encoders are included, a 128-bit data bus is separated, every two bits are sequentially encoded, a four-bit bus is formed, and the 128-bit data bus can be expanded to be a 256-bit bus. The relative stability of system bus transmission of the portable master station is achieved, and the method has the advantages of being high in efficiency, good in performance and low in cost.
Description
Technical field
The invention belongs to electronic circuit field, relate in particular to a kind of bus expanding method of portable main website.
Background technology
In the design of portable main station system, employing be that framework is controlled in multitask in real time, this framework mainly relies on that accurate clock time-sharing circuit completes.This just requires the relatively stable of mission bus expansion.
In actual field environment, because the electromagnetic interference (EMI) and the of high-frequency circuit own that are subject in work condition environment disturb, clock timing tends to produce deviation, causes timing unstable, cause the unstable of event task duty, when serious, can cause the collapse of whole portable main station system.
In this case, must in timing circuit, introduce parallel state processing mechanism, rely on stable encoding mechanism expansion bus.
Summary of the invention
The object of the present invention is to provide a kind of bus expanding method of portable main website, realize the relatively stable of portable main station system bus transfer, there is efficiency high, the advantage that performance is good, cost is low.
The technical scheme that realizes above-mentioned purpose is: a kind of bus expanding method of portable main website is provided, by multiple 2/4 scramblers are set, by all input buss corresponding these 2/4 scramblers, with every two successively coded system form corresponding four output buss; That is, make wherein two input buss of each 2/4 scrambler, coding is extended to four output buss of this 2/4 scrambler.
In an example, 64 2/4 scramblers are set, wherein: described 2/4 scrambler 1# input bus D0 and D1, coding is extended to S0, S1, S2, S3, described 2/4 scrambler 2# input bus D2 and D3, coding is extended to S4, S5, S6, S7, the like, described 2/4 scrambler 64# input bus D126 and D127, coding is extended to S252, S253, S254, S255, the data bus of 128 separates every two encodes successively, forms 4 buses, can be extended to 256 buses.
Owing to having adopted the bus expanding method of a kind of portable main website provided by the invention, the data bus of 128 separates every two encodes successively, forms 4 buses, can be extended to 256 buses.Realize the relatively stable of portable main station system bus transfer, there is efficiency high, the advantage that performance is good, cost is low.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Please refer to Fig. 1, in figure, provided a kind of bus expanding method of portable main website, be provided with 64 2/4 scramblers, wherein:
2/4 scrambler 1# input bus D0 and D1, coding is extended to S0, S1, S2, S3,2/4 scrambler 2# input bus D2 and D3, coding is extended to S4, S5, S6, S7, the like, 2/4 scrambler 64# input bus D126 and D127, coding is extended to S252, S253, S254, S255.The data bus of 128 separates every two encodes successively, forms 4 buses, can be extended to 256 buses.
Principle of work of the present invention is: apply multidiameter delay scrambler, a kind of bus expanding method of portable main website is provided, realized the relatively stable of portable main station system bus transfer, have efficiency high, the advantage that performance is good, cost is low.
Below embodiment has been described in detail the present invention by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thereby some details in embodiment should not form limitation of the invention, the present invention by the scope defining using appended claims as protection scope of the present invention.
Claims (2)
1. a bus expanding method for portable main website, is characterized in that, multiple 2/4 scramblers are set, by all input buss corresponding these 2/4 scramblers, with every two successively coded system form corresponding four output buss; That is, make wherein two input buss of each 2/4 scrambler, coding is extended to four output buss of this 2/4 scrambler.
2. the bus expanding method of portable main website as claimed in claim 1, is characterized in that, 64 128 buses corresponding to 2/4 scrambler are separated, and encodes and forms four buses successively, thereby be extended to 256 buses for every two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152389.1A CN103885915A (en) | 2014-04-16 | 2014-04-16 | Method for expanding bus of portable master station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152389.1A CN103885915A (en) | 2014-04-16 | 2014-04-16 | Method for expanding bus of portable master station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103885915A true CN103885915A (en) | 2014-06-25 |
Family
ID=50954814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410152389.1A Pending CN103885915A (en) | 2014-04-16 | 2014-04-16 | Method for expanding bus of portable master station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103885915A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303680A (en) * | 2008-06-17 | 2008-11-12 | 深圳市宏电技术股份有限公司 | Method and apparatus for expanding multiple serial ports of terminal |
| US20130100750A1 (en) * | 2010-06-24 | 2013-04-25 | Taiyo Yuden Co., Ltd. | Semiconductor device |
-
2014
- 2014-04-16 CN CN201410152389.1A patent/CN103885915A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303680A (en) * | 2008-06-17 | 2008-11-12 | 深圳市宏电技术股份有限公司 | Method and apparatus for expanding multiple serial ports of terminal |
| US20130100750A1 (en) * | 2010-06-24 | 2013-04-25 | Taiyo Yuden Co., Ltd. | Semiconductor device |
Non-Patent Citations (1)
| Title |
|---|
| 吴怀超: "MCS-51单片机扩展系统编制问题探讨", 《微处理机》, no. 2, 30 April 2011 (2011-04-30) * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140625 |