CN102214991B - Trunk circuit with serial peripheral interfaces - Google Patents
Trunk circuit with serial peripheral interfaces Download PDFInfo
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- CN102214991B CN102214991B CN 201010142118 CN201010142118A CN102214991B CN 102214991 B CN102214991 B CN 102214991B CN 201010142118 CN201010142118 CN 201010142118 CN 201010142118 A CN201010142118 A CN 201010142118A CN 102214991 B CN102214991 B CN 102214991B
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Abstract
The invention relates to a trunk circuit with serial peripheral interfaces. The trunk circuit comprises a first serial peripheral interface terminal, a second serial peripheral interface terminal and a control circuit; the first serial peripheral interface terminal comprises a first tri-state gate and a second tri-state gate; the second serial peripheral interface terminal comprises a third tri-state gate and a fourth tri-stage gate; the output terminals of the first tri-stage gate and the second tri-stage gate are coupled with the input terminals of the third tri-state gate and the fourth tri-state gate which are opposite to the first tri-stage gate and the second tri-stage gate; and the input terminals of the first tri-stage gate and the second tri-stage gate are coupled with the outputterminals of the third tri-state gate and the fourth tri-state gate which are opposite to the first tri-stage gate and the second tri-stage gate; and the control circuit comprises a first output terminal and a second output terminal, and selectively enables the first output terminal or the second output terminal to have high potential, thus the connecting length between a main device and an auxiliary device is increased by utilizing the trunk circuit with the serial peripheral interfaces.
Description
Technical field
The present invention relates to a kind of repeat circuit, particularly the repeat circuit of a kind of serial circumference interface (SPI, Serial PeripheralInterface).
Background technology
In recent years, because economy develops fast, human more and more higher to the requirement of quality of life, the competition of every field is also fierce relatively.In the face of the society that seizes every minute and second, haggle over every penny, as how easily and fast and the mode of cost-saving satisfy the target that the consumer has become every field dealer.
Wherein, aspect factory, how to make production line produce in large quantities to reduce cost and become one of target that relevant dealer mainly develops with the usefulness that promotes production.The production that the mode that production line can utilize many device synchronization to carry out is a large amount of owing at limited region memory a limited number of problems of equipment are being arranged, can utilize the length that increases the equipment room connecting line to improve this problem.But the increase of equipment room connecting line length makes the received signal of equipment weaken, and has the risk of distorted signals, and then the quality of influence production.There are at present many repeat circuits to make the signal transmission of equipment room can not connect the problem that there is distorted signals in length because prolonging on the market, but the coffret difference because of equipment room, required repeat circuit is also different, there is no the repeat circuit with serial circumference interface at present and exists.
Summary of the invention
In view of above problem, the invention reside in the repeat circuit that a kind of serial circumference interface is provided, the equipment room that has serial circumference interface so as to solution has the risk of distorted signals because increasing connecting line length.
The repeat circuit of the disclosed serial circumference interface of the present invention, be suitable for connecting main equipment with from equipment, wherein, main equipment has the first serial circumference interface bus, have the second serial circumference interface bus from equipment, the repeat circuit of serial circumference interface comprises the first serial circumference interface end, second serial circumference interface end and the control circuit.The first serial circumference interface end comprises 3 first ternary grid (tri-state gate) and one second ternary grid, the second serial circumference interface end comprises 3 the 3rd ternary grid and one the 4th ternary grid, each first ternary grid corresponds to (opposite to) each the 3rd ternary grid, and the second ternary grid correspond to the 4th ternary grid.The output of each first ternary grid couples the input of each corresponding the 3rd ternary grid, and the output of the second ternary grid couples the input of the 4th corresponding ternary grid.The input of each first ternary grid couples the output of each corresponding the 3rd ternary grid, and the input of the second ternary grid couples the output of the 4th corresponding ternary grid.
The first serial circumference interface bus couples each first ternary grid and the 4th ternary grid, and the second serial circumference interface bus couples each the 3rd ternary grid and the second ternary grid, and control circuit comprises first output and second output.First output couples the activation end of each first ternary grid and the second ternary grid, and second output couples the activation end of each the 3rd ternary grid and the 4th ternary grid, and it is high potential that control circuit optionally makes first output or second output.
In one embodiment of the invention, the repeat circuit of serial circumference interface also comprises first resistance and first power supply, and an end of first resistance couples the input of the second ternary grid, and the other end of first resistance couples first power supply.Wherein, the resistance value of first resistance is 10k Ω (kilo-ohm).
In one embodiment of the invention, control circuit comprises first direction control end and first not gate (notgate), the first direction control end couples the activation end of each first ternary grid and the activation end of the second ternary grid, the input of first not gate couples the first direction control end, and the output of first not gate couples the activation end of each the 3rd ternary grid and the activation end of the 4th ternary grid.
In one embodiment of the invention, control circuit also comprises second resistance, the 3rd resistance and second source, one end of second resistance couples the first direction control end, the other end of second resistance couples second source, one end of the 3rd resistance couples this first direction control end (first direction control port), the other end ground connection of the 3rd resistance.Wherein, the resistance value of second resistance is 10k Ω, and the resistance value of the 3rd resistance is 3.6k Ω.
In one embodiment of the invention, control circuit comprises second direction control end, the first activation end, first and door (and gate), second and door, second not gate, the 3rd not gate and the 4th not gate.First with the door an input couple the second direction control end, first with the door output couple the activation end of each first ternary grid and the activation end of the second ternary grid.Second with the door output couple the activation end of each the 3rd ternary grid and the activation end of the 4th ternary grid, the input of second not gate couples the first activation end, the output of second not gate couple first with another input.The input of the 3rd not gate couples the second direction control end, the output of the 3rd not gate couple second with the door an input.The input of the 4th not gate couples the first activation end, the output of the 4th not gate couple second with the door another input.
In one embodiment of the invention, control circuit also comprises the 4th resistance, the 5th resistance and the 3rd power supply, one end of the 4th resistance couples the second direction control end, the other end of the 4th resistance couples the 3rd power supply, one end of the 5th resistance couples this second direction control end, the other end ground connection of the 5th resistance, and the first activation end ground connection.Wherein, the resistance value of the 4th resistance is 10k Ω, and the resistance value of the 5th resistance is 3.6k Ω.
According to the repeat circuit of serial circumference interface of the present invention, be applied to have the main equipment at serial circumference interface with from equipment room, can increase main equipment with from the connecting line length of equipment room, and solve because increasing connecting line length the risk of distorted signals arranged.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the application schematic diagram according to the repeat circuit of serial circumference interface of the present invention;
Fig. 2 is the repeat circuit schematic diagram of serial circumference interface according to an embodiment of the invention;
Fig. 3 is the embodiment schematic diagram according to control circuit of the present invention; And
Fig. 4 is another embodiment schematic diagram according to control circuit of the present invention.
Wherein, Reference numeral
90 main equipments
92 from equipment
The repeat circuit of 100 serial circumference interfaces
101 first serial circumference interface buses
102 first serial circumference interface ends
103 second serial circumference interface buses
104 first ternary grid
105 second ternary grid
106 second serial circumference interface ends
108 the 3rd ternary grid
109 the 4th ternary grid
110 control circuits
112 first resistance
114 first power supplys
116 first outputs
118 second outputs
202 first direction control ends
204 first not gates
206 second resistance
207 the 3rd resistance
208 second sources
302 second direction control ends
304 first activation ends
306 first with the door
308 second with the door
310 second not gates
312 the 3rd not gates
314 the 4th not gates
316 the 4th resistance
317 the 5th resistance
318 the 3rd power supplys
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
Please refer to Fig. 1, be the application schematic diagram according to the repeat circuit of serial circumference interface of the present invention.The repeat circuit 100 of serial circumference interface is to be disposed at main equipment and between the equipment.Main equipment 90 comprises the first serial circumference interface bus 101, comprise the second serial circumference interface bus 103 from equipment 92, one end of the repeat circuit 100 of serial circumference interface couples the first serial circumference interface bus 101, and the other end of the repeat circuit 100 of serial circumference interface couples and the second serial circumference interface bus 103.The repeat circuit 100 transmission main equipments 90 of serial circumference interface and from the signal of 92 of equipment.Wherein, main equipment 90 can be but is not limited to the main frame of Auto-Test System or burning/recording chip, can be from equipment 92 but is not limited to treat the chip of burning.
Please refer to Fig. 2, is to be the repeat circuit schematic diagram of serial circumference interface according to an embodiment of the invention.The repeat circuit of serial circumference interface comprises the first serial circumference interface end 102, the second serial circumference interface end 106 and control circuit 110.The first serial circumference interface end 102 comprises 3 first ternary grid 104 and one second ternary grid 105.The second serial circumference interface end 106 comprises 3 the 3rd ternary grid 108 and one the 4th ternary grid 109.Each first ternary grid 104 corresponds to each the 3rd ternary grid 108, the second ternary grid 105 and corresponds to the 4th ternary grid 109.The output of each first ternary grid 104 couples the input of each corresponding the 3rd ternary grid 108, and the output of the second ternary grid 105 couples the input of the 4th corresponding ternary grid 109.The input of each first ternary grid 104 couples the output of each corresponding the 3rd ternary grid 108, and the input of the second ternary grid 105 couples the output of the 4th corresponding ternary grid 109.
Please refer to Fig. 1 and Fig. 2, the first serial circumference interface bus 101 couples each first ternary grid 104 and the 4th ternary grid 109, and the second serial circumference interface bus 103 couples each the 3rd ternary grid 108 and the second ternary grid 105.Control circuit 110 comprises first output 116 and second output 118.First output 116 couples the activation end of each first ternary grid 104 and the second ternary grid 105, second output 118 couples the activation end of each the 3rd ternary grid 108 and the 4th ternary grid 109, and control circuit 110 optionally makes first output 116 or second output 118 be high potential.
In the present embodiment, when control circuit 110 control first output 116 be high potential and second output 118 when being electronegative potential, the activation end of each first ternary grid 104 and the second ternary grid 105 is high potential, the activation end of each the 3rd ternary grid 108 and the 4th ternary grid 109 is electronegative potential, and feasible signal is transferred to the second serial circumference interface end 106 by the first serial circumference interface end 102.When control circuit 110 control first output 116 be electronegative potential and second output 118 when being high potential, feasible signal is transferred to the first serial circumference interface end 102 by the second serial circumference interface end 106.Therefore can optionally control the transmission direction of the repeat circuit 100 of serial circumference interface by control circuit 110.
In the present embodiment, because the repeat circuit 100 of serial circumference interface is suitable for connecting the equipment with serial circumference interface bus,, the serial circumference interface end is not limited to four ternary grid so can be, when the serial circumference interface end has doubly several ternary grid of four, then can couple a plurality of equipment with serial circumference interface bus, but a plurality of equipment of synchronous operation are to increase Production Line usefulness.
The repeat circuit of serial circumference interface can comprise that also an end of first resistance 112 and first power supply, 114, the first resistance 112 couples the input of the second ternary grid 105, and the other end of first resistance 112 couples first power supply 114.Wherein the resistance value of first resistance 112 can be but is not limited to 10k Ω (kilo-ohm).The repeat circuit of serial circumference interface can prolong main equipment online with from equipment room, according to above-mentioned circuit, can increase the electric current of second ternary grid 105 inputs, to improve the driving force of signal, avoids distorted signals.In the present embodiment, also can determine at the input configuration resistance of the 3rd ternary grid 108 of all or part and power supply with raising signal driving force according to practical situation.
Please refer to Fig. 3, is to be the embodiment schematic diagram according to the control circuit of the embodiment of the invention.Control circuit 110 comprises first direction control end 202 and first not gate 204, first direction control end 202 couples first output 116 of control circuit 110, the output that the input of first not gate 204 couples first direction control end 202, the first not gates 204 couples second output 118 of control circuit 110.In the present embodiment, first direction control end 202 optionally makes first output 116 or second output 118 be high potential.Therefore, by the voltage potential of control first direction control end 202, get final product the direction of control signal relay transmission.
Please refer to Fig. 2 and Fig. 3, in the present embodiment, control circuit 110 also can comprise second resistance 206, the 3rd resistance 207 and second source 208, one end of second resistance 206 couples first direction control end 202, the other end of second resistance 206 couples second source 208, one end of the 3rd resistance 207 couples the other end ground connection of these first direction control end 202, the three resistance 207.Wherein, the resistance value of second resistance 206 can be but is not limited to 10k Ω, and the resistance value of the 3rd resistance 207 can be but is not limited to 3.6k Ω.Wherein, second resistance 206 and the 3rd resistance 207 can limit the input current of first direction control end 202, avoid impaired with protection control circuit 110.Make signal be transferred to the second serial circumference interface end 106 by the first serial circumference interface end according to above-mentioned circuit.
Please refer to Fig. 4, is to be another embodiment schematic diagram according to control circuit of the present invention.Control circuit 110 comprise second direction control end 302, the first activation end 304, first and door 306, second with 308, second not gate 310, the 3rd not gate 312 and the 4th not gate 314.First couples first output 116 that second direction control end 302, the first and the output of door 306 couple control circuit 110 with a door input of 306.The output that second input that couples second output, 118, the second not gates 310 of control circuit 110 with door 508 output couples the first activation end, 304, the second not gates 310 couple first with another input of door 306.The output that the input of the 3rd not gate 312 couples second direction control end 302, the three not gates 312 couple second with an input of door 308.The output that the input of the 4th not gate 314 couples the first activation end, 304, the four not gates 314 couple second with another input of door 308.In the present embodiment, second direction control end 302 optionally makes first output 116 or second output 118 be high potential.Therefore, but the direction of second direction control end 302 control signals transmission.
Please refer to Fig. 2 and Fig. 4, in the present embodiment, control circuit 110 also can comprise the 4th resistance 316, the 5th resistance 317 and the 3rd power supply 318, one end of the 4th resistance 316 couples second direction control end 302, the other end of the 4th resistance 316 couples the 3rd power supply 318, one end of the 5th resistance 317 couples the other end ground connection of second direction control end 302, the five resistance 317, and the first activation end, 504 ground connection.Wherein, the resistance value of the 4th resistance 316 can be but is not limited to 10k Ω, and the resistance value of the 5th resistance 317 can be but is not limited to 3.6k Ω.Wherein, the 4th resistance 316 and the 5th resistance 317 can limit the input current of second direction control end 302, avoid impaired with protection control circuit 110.Make signal be transferred to the second serial circumference interface end 106 by the first serial circumference interface end 102 according to above-mentioned circuit.
According to the repeat circuit of serial circumference interface of the present invention, be applied to have the main equipment at serial circumference interface with from equipment room, can increase main equipment with from the connecting line length of equipment room, and solve because increasing connecting line length the risk of distorted signals arranged.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1. the repeat circuit of a serial circumference interface, be suitable for connecting a main equipment and from equipment, this main equipment has one first serial circumference interface bus, should have one second serial circumference interface bus from equipment, it is characterized in that the repeat circuit of this serial circumference interface comprises:
One first serial circumference interface end, this first serial circumference interface end comprises three first ternary grid and one second ternary grid;
One second serial circumference interface end, this second serial circumference interface end comprises three the 3rd ternary grid and one the 4th ternary grid, three these first ternary grid and three the 3rd ternary grid connect one to one, these second ternary grid correspond to the 4th ternary grid, one output of three these first ternary grid is coupled to an input of three the 3rd ternary grid, and the input of the output of three these first ternary grid and three the 3rd ternary grid connects one to one, one output of these second ternary grid couples an input of the 4th corresponding ternary grid, one input of three these first ternary grid is coupled to an output of three the 3rd ternary grid, and the output of the input of three these first ternary grid and three the 3rd ternary grid connects one to one, and an input of these second ternary grid couples an output of the 4th corresponding ternary grid; And
One control circuit, this control circuit comprises one first output and one second output, this first output couples an activation end of each these first ternary grid and an activation end of these second ternary grid, this second output couples an activation end of each the 3rd ternary grid and an activation end of the 4th ternary grid, and it is high potential that this control circuit optionally makes this first output or this second output;
Wherein, this first serial circumference interface bus couples each these first ternary grid and the 4th ternary grid, and this second serial circumference interface bus couples each the 3rd ternary grid and this second ternary grid;
The repeat circuit of this serial circumference interface also comprises one first resistance and one first power supply, and an end of this first resistance couples this input of these second ternary grid, and the other end of this first resistance couples this first power supply.
2. the repeat circuit of serial circumference interface according to claim 1 is characterized in that, the resistance value of this first resistance is 10k Ω.
3. the repeat circuit of serial circumference interface according to claim 1, it is characterized in that, this control circuit comprises a first direction control end and one first not gate, this first direction control end couples this activation end of each these first ternary grid and this activation end of these second ternary grid, one input of this first not gate couples this first direction control end, and an output of this first not gate couples this activation end of each the 3rd ternary grid and this activation end of the 4th ternary grid.
4. the repeat circuit of serial circumference interface according to claim 3, it is characterized in that, this control circuit also comprises one second resistance, one the 3rd resistance and a second source, one end of this second resistance couples this first direction control end, the other end of this second resistance couples this second source, one end of the 3rd resistance couples this first direction control end, the other end ground connection of the 3rd resistance.
5. the repeat circuit of serial circumference interface according to claim 4 is characterized in that, the resistance value of this second resistance is 10k Ω, and the resistance value of the 3rd resistance is 3.6k Ω.
6. the repeat circuit of serial circumference interface according to claim 1 is characterized in that, this control circuit comprises:
One second direction control end;
One first activation end;
One first with the door, this first with the door an input couple this second direction control end, this first with the door an output couple this activation end of each these first ternary grid and this activation end of these second ternary grid;
One second with the door, this second with the door an output couple this activation end of each the 3rd ternary grid and this activation end of the 4th ternary grid;
One second not gate, an input of this second not gate couple this first activation end, an output of this second not gate couple this first with the door another input;
One the 3rd not gate, an input of the 3rd not gate couples this second direction control end, an output of the 3rd not gate couple this second with the door an input; And
One the 4th not gate, an input of the 4th not gate couple this first activation end, an output of the 4th not gate couple this second with the door another input.
7. the repeat circuit of serial circumference interface according to claim 6, it is characterized in that, this control circuit also comprises one the 4th resistance, one the 5th resistance and one the 3rd power supply, one end of the 4th resistance couples this second direction control end, the other end of the 4th resistance couples the 3rd power supply, one end of the 5th resistance couples this second direction control end, the other end ground connection of the 5th resistance, and this first activation end ground connection.
8. the repeat circuit of serial circumference interface according to claim 7 is characterized in that, the resistance value of the 4th resistance is 10k Ω, and the resistance value of the 5th resistance is 3.6k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010142118 CN102214991B (en) | 2010-04-02 | 2010-04-02 | Trunk circuit with serial peripheral interfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010142118 CN102214991B (en) | 2010-04-02 | 2010-04-02 | Trunk circuit with serial peripheral interfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102214991A CN102214991A (en) | 2011-10-12 |
| CN102214991B true CN102214991B (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010142118 Expired - Fee Related CN102214991B (en) | 2010-04-02 | 2010-04-02 | Trunk circuit with serial peripheral interfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102214991B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351163B1 (en) * | 1999-04-28 | 2002-02-26 | Seiko Instruments Inc. | Reset circuit |
| CN201039005Y (en) * | 2007-05-31 | 2008-03-19 | 杭州华三通信技术有限公司 | A power conversion circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01194861A (en) * | 1988-01-27 | 1989-08-04 | Toshiba Corp | Step-up circuit |
| JP2000152629A (en) * | 1998-11-12 | 2000-05-30 | Toyo Hightech Kk | Electromagnetic wave attenuation rectifying circuit |
| JP2001268891A (en) * | 2000-03-22 | 2001-09-28 | Kanegafuchi Chem Ind Co Ltd | Power unit using solar cell |
| TWI251730B (en) * | 2004-02-05 | 2006-03-21 | Golden Bridge Electech Inc | Selectable DC output power converter with voltage level indicating device |
| JP4934818B2 (en) * | 2007-03-29 | 2012-05-23 | 国立大学法人九州工業大学 | Electronic circuit devices |
-
2010
- 2010-04-02 CN CN 201010142118 patent/CN102214991B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351163B1 (en) * | 1999-04-28 | 2002-02-26 | Seiko Instruments Inc. | Reset circuit |
| CN201039005Y (en) * | 2007-05-31 | 2008-03-19 | 杭州华三通信技术有限公司 | A power conversion circuit |
Non-Patent Citations (4)
| Title |
|---|
| JP平1-194861A 1989.08.04 |
| JP特开2000-152629A 2000.05.30 |
| JP特开2001-268891A 2001.09.28 |
| JP特开2008-250576A 2008.10.16 |
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| CN102214991A (en) | 2011-10-12 |
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