CN100399313C - SMBus expanding device - Google Patents
SMBus expanding device Download PDFInfo
- Publication number
- CN100399313C CN100399313C CNB2005100181135A CN200510018113A CN100399313C CN 100399313 C CN100399313 C CN 100399313C CN B2005100181135 A CNB2005100181135 A CN B2005100181135A CN 200510018113 A CN200510018113 A CN 200510018113A CN 100399313 C CN100399313 C CN 100399313C
- Authority
- CN
- China
- Prior art keywords
- smbus
- circuit board
- integrated circuit
- computer
- expanding unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses an SMBus expanding device which relates to the construction of a system management bus expanding device in a computer. An SMBus connector lug is arranged on computer PCI, PCI Express and CNR plate cards to supply users to connect the SMBus expanding device; the SMBus expanding device is composed of a computer plate card, an SMBus and the SMBus connector lug. The present invention has the advantages that the SMBus expanding device of the computer plate card provides users with interfaces for using the SMBUS, and the computer system management device can be expanded conveniently.
Description
Technical field
A kind of System Management Bus (SMBus) expanding unit relates to the composition of tandem system management bus expanding unit in the computer.
Background technology
System Management Bus (SMBus) is the chip chamber serial communication bus that Intel proposes, and comprises a data lines SMDAT and a clock line SMCLK, and 2 lines must be connected on the power supply with pull-up resistor during work.Each bus device all has an address, can constitute the expansion of multi-computer system and peripheral components easily, and bus interface all has been integrated in the device, do not need to add in addition the bus interface circuit, the characteristics that plug and play (Plug and play) arranged, in computer, be widely used: the south bridge family chip ICH3 of Intel, ICH4, ICH5, ICH6 (I/OController HUB 6) and compatible chip, or the South Bridge chip AMD768 of AMD product etc., all can communicate with mode and the miscellaneous equipment of serial SMBus, all possesses SMBus at every computer almost, SMBus interface such as PCI are provided on the computer main board, PCI-X, CNR, PCI Express slot supplies user's connection hardware supervisory circuit etc. usually.
I
2The C bus is by Philips exploitation, I
2C (I2C) bus has standard and numerous band I of standard
2The peripheral components of C interface, I
2The characteristics of C are the independence of structure and the simplicity that the user uses, and SMBus is I
2A subclass (subset) of C bus/protocol, a lot of I
2The compatible SMBus of C bus device can directly use on the SMBus of computer system.
Though prior art has had above-mentioned all development, but now the use of SMBus in the computer is limited on computer main board and PCI, PCI-X, PCI Express, the CNR integrated circuit board, be other local uses on as peripheral equipments such as computer power unit, hard disks or to connect testing tool then inconvenient.
Summary of the invention
Apparatus of the present invention are on computer PCI Express, PCI, PCI-X, CNR integrated circuit board the SMBus jointing to be set, and supply with the user and connect the SMBus expansion equipment.This device is made of computer integrated circuit board, SMBus and SMBus jointing.
A kind of SMBus expanding unit is characterized in that:
This device is by following any computer integrated circuit board,
The a.PCI integrated circuit board,
B.PCI Express integrated circuit board,
The c.CNR integrated circuit board
With SMBus and being made of the SMBus jointing, and the SMBus on the integrated circuit board is electrically connected with the SMBus jointing, and the clock line SMCLK of SMBus and data line SMDAT draw from computer integrated circuit board slot,
The SMBus jointing has 4 pins, is respectively SMBus clock line SMCLK, SMBus data line SMDAT, Vcc and GND, also has an empty needle to be used for the location in addition.
Above-mentioned integrated circuit board is all supported the SMBus standard, and SMBus is as auxiliary signal in above-mentioned integrated circuit board.
The feature of contrive equipment also is: PCI Express integrated circuit board comprises X1, X4, X8, X16 and X32 integrated circuit board according to the bus bit wide.
The feature of contrive equipment also is:
Can have at least one this device on every computer, on 1 computer a plurality of these devices be arranged if desired, on the circuit as long as its end SMCLK of the same name, SMDAT, Vcc, GND are linked to each other.
The feature of contrive equipment also is:
This device on each computer, compatible I2C (I
2C) standard can connect I2C peripherals.
The feature of contrive equipment also is:
Described device is integrated on the computer function integrated circuit board, as placing on PCI or the PCI Express display card.
The feature of contrive equipment also is:
Be connected with low-pass filter on the SMBus, form, to reduce interference for SMBus by R, C and 2 utmost point pipes, be parallel with resistance R and 2 utmost point pipe D on the SMBDAT line on the SMBus, via capacitor C ground connection, wherein D is germanium 2 utmost point pipes, and the other end of R and D is connected SMBus equipment.
The present invention has the following advantages and good effect.
Because be SMBus expanding unit on the computer integrated circuit board, it is simple, and the brain user that can power expands and connects the peripheral hardware monitoring, or the management of Portable computer system equipment is used in the debugging of production and maintaining unit.
Description of drawings
Fig. 1-SMBus expanding unit is formed synoptic diagram
Fig. 2-SMBus expanding unit circuit theory diagrams
Specific embodiments
The present invention is further described below in conjunction with drawings and Examples.
On the mainboard of Intel, AMD computer (PC, server, workstation) and clone South Bridge chip is arranged all, South Bridge chip inside provides SMBus primary controller, with ICH6 (82801FB) is example, ICH6 inside provides a SMBus primary controller, it comprises a SMBus master control interface, for processor and SMBus external unit (slave unit) communication provide condition, the compatible most I of the SMBus mode of operation of ICH6
2C bus device, SMBus interface device have one 7 bit address, can expand 127 bus devices, or expand 127 SMBus expanding units.
Embodiment 1. is as Fig. 1 and Fig. 2, use the SMBus interface that has on the PCI Express X16 display card in this example, integrated circuit board B5, B6 pin connection SMBCLK and SMBDAT are to PCI Express plate from it, form jointing by SMBus clock line SMCLK, SMBus data line SMDAT, Vcc (3.3V) and GND, NC among Fig. 1 is an empty needle, and what will connect on the SMBus here is a slave unit.
Embodiment 2.SMBus expanding unit circuit theory such as Fig. 2, use the computer PCI integrated circuit board in this example, the SMBus expansion interface is set on the PCI integrated circuit board, the A face 40 of integrated circuit board, A face 41 pin connect SMBCLK and SMBDAT SMBus jointing to the PCI plate from it, connect Vcc (5.0V) and the GND jointing to contrive equipment simultaneously, what will connect on the SMBus here also is a slave unit.2 resistance R p are pull-up resistors among Fig. 2, have become low-pass filter with resistance R, capacitor C and diode group D, can reduce the interference for the SMBus signal, and principle is referring to Chinese patent ZL01819086.3.Must note the difference of I2C and SMBus cutoff frequency.
Claims (5)
1. SMBus expanding unit is characterized in that:
This device is by following any computer integrated circuit board,
The a.PCI integrated circuit board,
B.PC Express integrated circuit board,
The c.CNR integrated circuit board
With SMBus and being made of the SMBus jointing, the SMBus on the integrated circuit board is electrically connected with the SMBus jointing, and the clock line SMCLK of SMBus and data line SMDAT draw from computer integrated circuit board slot;
Described SMBus jointing has 4 pins, is respectively SMBus clock line SMCLK, SMBus data line SMDAT, Vcc and GND, also has an empty needle to be used for the location in addition.
2. by the described a kind of SMBus expanding unit of claim 1, it is characterized in that:
PCI Express integrated circuit board comprises X1, X4, X8, X16 and X32 integrated circuit board according to the bus bit wide.
3. by the described a kind of SMBus expanding unit of claim 1, it is characterized in that:
Can have at least one this device on every computer.
4. by the described a kind of SMBus expanding unit of claim 1, it is characterized in that:
This device on each computer can connect compatible I2C equipment.
5. by the described a kind of SMBus expanding unit of claim 1, it is characterized in that:
Be connected with low-pass filter on the SMBus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100181135A CN100399313C (en) | 2005-01-06 | 2005-01-06 | SMBus expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100181135A CN100399313C (en) | 2005-01-06 | 2005-01-06 | SMBus expanding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1641616A CN1641616A (en) | 2005-07-20 |
| CN100399313C true CN100399313C (en) | 2008-07-02 |
Family
ID=34875650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100181135A Expired - Fee Related CN100399313C (en) | 2005-01-06 | 2005-01-06 | SMBus expanding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100399313C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778109B (en) * | 2015-04-28 | 2017-05-03 | 浪潮电子信息产业股份有限公司 | Program downloading system and method of PCIE/PCIX external plug-in card |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247352Y (en) * | 1996-01-25 | 1997-02-12 | 马希光 | Improved computer expander |
| US5991839A (en) * | 1995-09-29 | 1999-11-23 | Kabushiki Kaisha Toshiba | Computer system having computer main body and expansion unit |
| CN2403057Y (en) * | 1999-08-31 | 2000-10-25 | 海信集团公司 | PCI through circuit board |
| US6622250B1 (en) * | 1999-12-21 | 2003-09-16 | Intel Corporation | SMBUS over the PCI bus isolation scheme and circuit design |
-
2005
- 2005-01-06 CN CNB2005100181135A patent/CN100399313C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5991839A (en) * | 1995-09-29 | 1999-11-23 | Kabushiki Kaisha Toshiba | Computer system having computer main body and expansion unit |
| CN2247352Y (en) * | 1996-01-25 | 1997-02-12 | 马希光 | Improved computer expander |
| CN2403057Y (en) * | 1999-08-31 | 2000-10-25 | 海信集团公司 | PCI through circuit board |
| US6622250B1 (en) * | 1999-12-21 | 2003-09-16 | Intel Corporation | SMBUS over the PCI bus isolation scheme and circuit design |
Non-Patent Citations (2)
| Title |
|---|
| SMBus协议分析及其在双MCU通讯中的应用. 崔健，鲁志平.微计算机信息，第20卷第6期. 2004 |
| SMBus协议分析及其在双MCU通讯中的应用. 崔健，鲁志平.微计算机信息，第20卷第6期. 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1641616A (en) | 2005-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103870429B (en) | Based on the igh-speed wire-rod production line plate of embedded gpu | |
| US20140372652A1 (en) | Simulation card and i2c bus testing system with simulation card | |
| US8601196B2 (en) | Connector assembly | |
| US20130268708A1 (en) | Motherboard test device and connection module thereof | |
| CN204065979U (en) | One exempts from instrument dismounting PCIE adapter | |
| CN211427190U (en) | Server circuit and mainboard based on Feiteng treater 2000+ | |
| CN107066746B (en) | Method for realizing PCA9555 function through CPLD based on I2C interface | |
| US8433839B2 (en) | Connector assembly | |
| JP5859663B2 (en) | System for performing connection, IO connector assembly and operation method | |
| TW201435600A (en) | System and method for integrating thunderbolt chipset to PCIe card | |
| CN100399313C (en) | SMBus expanding device | |
| CN203133695U (en) | BMC (backboard management controller) card based on AST2300 control chip | |
| CN107329863B (en) | General hardware platform of measuring instrument based on COMe | |
| CN203930839U (en) | A kind of safeguard protection card for forcing hard disc of computer to start the operating system | |
| CN103869883B (en) | One kind extension mainboard and expansion system | |
| CN213365381U (en) | Main board | |
| CN204697180U (en) | Chip main board and television set | |
| CN101853231B (en) | Mainboard, computer and storage device | |
| CN204189089U (en) | A kind of server | |
| US6530048B1 (en) | I2C test single chip | |
| CN207319128U (en) | A kind of mainboard and computer equipment | |
| US8527686B2 (en) | Electronic device having multifunctional network interface port | |
| CN101162435A (en) | Computer accelerated velocity monitoring system | |
| TWI524177B (en) | Debug test circuit and method thereof | |
| CN104112103A (en) | Remote management data encryption daughter card applied to blade server |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080702 Termination date: 20110106 |