CN102033845A - Circuit of card plug type structure I<2>C bus address - Google Patents
Circuit of card plug type structure I<2>C bus address Download PDFInfo
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- CN102033845A CN102033845A CN 201010585182 CN201010585182A CN102033845A CN 102033845 A CN102033845 A CN 102033845A CN 201010585182 CN201010585182 CN 201010585182 CN 201010585182 A CN201010585182 A CN 201010585182A CN 102033845 A CN102033845 A CN 102033845A
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Abstract
The invention relates to a circuit of a card plug type structure I<2>C bus address. The circuit comprises a connector I, a connector II, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7 and a resistor R8, wherein a pin 1, a pin 2, a pin 3 and a pin 4 of the connector II can be grounded or suspended according to address setting; a pin 1, a pin 2, a pin 3 and a pin 4 of the connector I are connected with a pull-up resistor R1, a pull-up resistor R2, a pull-up resistor R3 and a pull-up resistor R4 respectively and then connected with a micro-programmed control unit (MCU) interface through the resistor R5, the resistor R6, the resistor R7 and the resistor R8 which are connected in series; and the other ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are connected in parallel. By using the circuit, great convenience is brought to design; and the circuit mainly has the advantages that: 1, each card plug design can be completely the same in hardware without the setting of the address to prevent error operation; 2, a toggle switch is saved to reduce cost and save a position of a card plug front panel; and 3, a user does not need to consider and make the setting of the address clear.
Description
Technical field
The present invention relates to a kind of card insert type structure I
2The circuit of C bus address is mainly used in the card insert type structure I
2The setting of C bus address.
Background technology
At present, because card insert type structural device compactness, be easy to centralized management, advantage such as equipment is little is extensive use of by communication facilities.In addition,, also be often used as the bus of card insert type structure, realize the communication between each plug-in card, administrative unit and each plug-in card as very ripe and be widely used bus structure.
I
2Each plug-in card status equates on the C bus, but each card must have the address that oneself is different from other plug-in card, is used for the identification of communication process.For the setting of each card address, many ways are on each plug-in card panel toggle switch to be installed at present, can arbitrarily be provided with in the use like this, and the shortcoming of doing like this has:
(1) if address setting is improper, can cause address conflict between each plug-in card, make I
2The paralysis of C bus.
(2) for realizing the card insert type structure, the plug-in card front panel is generally less, and is taken by various interface, adopts toggle switch, has taken already very nervous front panel space resources.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of not to the I of each plug-in card
2The C bus address is provided with, but at the card backboard, promptly each plug-in card conduit is carried out the card insert type structure I of address setting
2The circuit of C bus address.
The present invention for achieving the above object, the technical scheme of being taked is: a kind of card insert type structure I
2The circuit of C bus address, it is characterized in that: comprise connector I, connector II, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, by pin one, pin two, pin 3, pin 4 ground connection or the unsettled I that sets plug-in card that the connector II is set
2The C bus address, after 1 pin of described connector I, 2 pin, 3 pin, 4 pin connect pull-up resistor R1, pull-up resistor R2, pull-up resistor R3, pull-up resistor R4 one end respectively, be connected with the MCU interface through resistance in series R5, resistance R 6, resistance R 7, resistance R 8, pull-up resistor R1, pull-up resistor R2, pull-up resistor R3, the pull-up resistor R4 other end also connect.
The invention has the beneficial effects as follows: after adopting this invention, bring great convenience, mainly contain following benefit to design:
(1) on hardware, can be identical in each plug-in card design, no longer need to consider the setting of its address, avoided maloperation.
(2) save toggle switch, reduced cost, and saved the position of plug-in card front panel.
(3) from user's angle, no longer need to consider, understand the setting of address.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1, a kind of card insert type structure I
2The circuit of C bus address, comprise the connector I, the connector II, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8,3 pin ground connection of connector II, 0 pin, 1 pin, 2 pin are unsettled, the pin one of described connector II, pin two, pin 3, but pin 4 is according to address setting ground connection or unsettled, 1 pin of described connector I, 2 pin, 3 pin, 4 pin connect pull-up resistor R1 respectively, pull-up resistor R2, pull-up resistor R3, behind the pull-up resistor R4, through resistance in series R5, resistance R 6, resistance R 7, resistance R 8 is connected with the MCU interface.
Principle of work: as shown in Figure 1, connector I (Connector1), resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8 and MCU interface are formed plug-in card (CARD), when plug-in card inserts backboard (BACKPLANE) connector II (Connector2), plug-in card MCU reads the logical value of connector II (Connector2) 0～3 pin, i.e. plug-in card self I
2The address of C bus.Specific address determine be: during the corresponding pin ground connection of connector, this position is 0 on the backboard, if unsettled, corresponding is 1.The address of plug-in card shown in Fig. 1 is 0x07.
Fig. 1 has only represented to have adopted 4 bit address, gives the address can at most 16 plug-in cards, in actual the use, can determine the figure place of address bit according to plug-in card quantity.In addition, 8 metering functions of resistance R 5～resistance R prevent that electric current is excessive among the figure, burn out MCU, accept or reject according to reality in actual the use.
Claims (1)
1. card insert type structure I
2The circuit of C bus address, it is characterized in that: comprise connector I, connector II, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, by pin one, pin two, pin 3, pin 4 ground connection or the unsettled I that sets plug-in card that the connector II is set
2The C bus address, after 1 pin of described connector I, 2 pin, 3 pin, 4 pin connect pull-up resistor R1, pull-up resistor R2, pull-up resistor R3, pull-up resistor R4 one end respectively, be connected with the MCU interface through resistance in series R5, resistance R 6, resistance R 7, resistance R 8, pull-up resistor R1, pull-up resistor R2, pull-up resistor R3, the pull-up resistor R4 other end also connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585182A CN102033845B (en) | 2010-12-13 | 2010-12-13 | Circuit of card plug type structure I<2>C bus address |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585182A CN102033845B (en) | 2010-12-13 | 2010-12-13 | Circuit of card plug type structure I<2>C bus address |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033845A true CN102033845A (en) | 2011-04-27 |
| CN102033845B CN102033845B (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010585182A Expired - Fee Related CN102033845B (en) | 2010-12-13 | 2010-12-13 | Circuit of card plug type structure I<2>C bus address |
Country Status (1)
| Country | Link |
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| CN (1) | CN102033845B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401086A (en) * | 2013-08-01 | 2013-11-20 | 上海三核科技有限公司 | Communication wire with address identification function |
| CN108134599A (en) * | 2017-12-04 | 2018-06-08 | 山东高云半导体科技有限公司 | A kind of I3C bus control interfaces circuit |
| CN108228508A (en) * | 2017-11-07 | 2018-06-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Communication interface circuit and communication means |
| CN112882424A (en) * | 2021-01-27 | 2021-06-01 | 武汉中元华电科技股份有限公司 | Data acquisition system and method for power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783050A (en) * | 2004-12-04 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | System and method for dynamically distributing I2C address |
| CN101539900A (en) * | 2008-03-18 | 2009-09-23 | 英业达股份有限公司 | Device for solving conflict generated between two I<2>C slave devices with same addressing address |
| CN101727431A (en) * | 2009-12-15 | 2010-06-09 | 杭州华三通信技术有限公司 | Bus impedance self-adaptive matching method and equipment thereof |
| CN101727099A (en) * | 2008-10-27 | 2010-06-09 | 上海工程技术大学 | Identification and information exchange platform based on I2C structural model and communication protocol unit |
| CN101765836A (en) * | 2007-07-27 | 2010-06-30 | 密克罗奇普技术公司 | Configuring multi-bit slave addressing on a serial bus using a single external connection |
-
2010
- 2010-12-13 CN CN201010585182A patent/CN102033845B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783050A (en) * | 2004-12-04 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | System and method for dynamically distributing I2C address |
| CN101765836A (en) * | 2007-07-27 | 2010-06-30 | 密克罗奇普技术公司 | Configuring multi-bit slave addressing on a serial bus using a single external connection |
| CN101539900A (en) * | 2008-03-18 | 2009-09-23 | 英业达股份有限公司 | Device for solving conflict generated between two I<2>C slave devices with same addressing address |
| CN101727099A (en) * | 2008-10-27 | 2010-06-09 | 上海工程技术大学 | Identification and information exchange platform based on I2C structural model and communication protocol unit |
| CN101727431A (en) * | 2009-12-15 | 2010-06-09 | 杭州华三通信技术有限公司 | Bus impedance self-adaptive matching method and equipment thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401086A (en) * | 2013-08-01 | 2013-11-20 | 上海三核科技有限公司 | Communication wire with address identification function |
| CN108228508A (en) * | 2017-11-07 | 2018-06-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Communication interface circuit and communication means |
| CN108134599A (en) * | 2017-12-04 | 2018-06-08 | 山东高云半导体科技有限公司 | A kind of I3C bus control interfaces circuit |
| CN112882424A (en) * | 2021-01-27 | 2021-06-01 | 武汉中元华电科技股份有限公司 | Data acquisition system and method for power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102033845B (en) | 2012-10-03 |
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Granted publication date: 20121003 Termination date: 20161213 |
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