CN102393791B

CN102393791B - Device and method for realizing power supply control on hardware modules

Info

Publication number: CN102393791B
Application number: CN201110188914.1A
Authority: CN
Inventors: 赵志宇; 段琳; 钱嘉林; 张颖; 李星爽
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: New H3C Information Technologies Co Ltd
Priority date: 2011-07-06
Filing date: 2011-07-06
Publication date: 2015-03-11
Anticipated expiration: 2031-07-06
Also published as: CN102393791A

Abstract

The invention discloses a device and method for realizing power supply control on hardware modules. According to the invention, a hot-pluggable pin of each module slot is expanded into at least two from one in the prior art, and the level state combination of all the hot-pluggable pins after expansion can show whether the module slots are inserted by the hardware modules, and also can show the needed quantity of inserted power units of the hardware modules. Therefore, by level state detection of all hot-pluggable pins when the hardware modules are in a passive state, the plugging state can be recognized and simultaneously the needed quantity of the power units can be acquired in a non-bus transmission manner. By utilizing the device and the method, the design complexity level of the hardware modules and the module slots can be reduced, the needed time for power supply control can be shortened, and various hardware modules are easily compatible. In addition, according to the invention, a CPU (Central Processing Unit) is not required for participating in power supply control necessarily, so that the load of the CPU can be reduced in need.

Description

For realizing the device and method of power supply control to hardware module

Technical field

The present invention relates to power supply control technology, particularly a kind of device for realizing power supply control to hardware module and a kind of method for realizing power supply control to hardware module.

Background technology

Hardware modularity design is a kind of Basic Design mode of electronic equipment, is common in personal computer, server and various network communication equipment.

Router in network communication equipment is the typical case of hardware modularity application, and current most routers are all modular routers.So-called modular router mainly refers to, this router itself only provides the most basic fixed interface (current main flow is Ethernet interface), if this router needs other interface types and Interface Expanding function, can be the corresponding hardware module of this configuration of routers.

As shown in Figure 1, existing modular router 100 can provide some module slots 10, has necessary hardware pins in each module slot 10; And each hardware module 20 also all has the hardware pins corresponding with module slot 10 and can be inserted in arbitrary module slot 10.Generally, the hardware pins of module slot 10 is the form of contact pin, the form of hardware pins then in jack of hardware module 20 correspondence.

The concrete definition of above-mentioned hardware pins comprises data bus (pci bus of such as high speed data transfer, PCI-E bus, 100M/1000M/10GE industry ethernet), control bus (the Local Bus bus of such as control information transmission and I ²the TDM bus of C bus and transmit clock signal), power pin, ground pin; In addition, a principal feature due to hardware modularity design supports the hot plug of the general all support hardware modules 20 of hot plug, i.e. modular router 100, therefore, also comprises the hot plug pin for identifying plug state in hardware pins definition.

Utilize the concrete mode of hot plug pin identification plug state incorporated by reference to Fig. 2:

There is in each hardware slot 10 of modular router 100 the hot plug pin P1 that ground pin P0 and a velamen pull-up are high level, hardware module 20 has the pin P1 ' of the pin V1 ' of corresponding power pin V1 and the pin P0 ' of corresponding ground pin P0 and corresponding hot plug pin P1 respectively, and the pin P0 ' of hardware module 20 and P1 ' mutual conduction;

After in hardware module 20 insert module slot 10, the pin P0 ' of hardware module 20 contacts with the ground pin P0 of module slot 10, the pin P1 ' of hardware module 20 contacts with the hot plug pin P1 in module slot 10, now, the pin P0 ' of the mutual conduction of hardware module 20 and P1 ' can by the hot plug pin P1 conducting of module slot 10 to the ground pin P0 of module slot 10, the level state of the hot plug pin P1 of module slot 10 is made to become low level from high level, logic chip 12 (such as CPLD or FPGA) in modular router 10 is detecting that hot plug pin P1 is from after high level becomes low level, can identify in module slot 10 and have hardware module 20 to insert,

After the hardware module 20 inserted in module slot 10 is extracted, hot plug pin P1 recovers high level again, and now, logic chip 12, when detecting that hot plug pin P1 is high level, can identify the hardware module 20 not having in module slot 10 to insert.

In addition, insert after hardware module 20 inserts or extract when identifying in module slot 10 to have, logic chip 12 also needs to CPU 13 reporting interruption, make CPU 13 in the process of interrupt processing, know plug state in module slot 10, and indicate logic chip 12 to power on to the module slot 10 inserting hardware module 20 or module slot 10 power-off after extracting hardware module 20.

Under normal circumstances, in modular router 100, the available horsepower unit sum of power supply 11 is limited, so, for module slot 10 and the more and situation that hardware module 20 power consumption is larger of hardware module 20 quantity inserted, limited available horsepower unit sum can cannot meet the hardware module 20 of all insertions, now just needs CPU 13 to carry out power supply control to the module slot 10 inserting hardware module 20 in the process of interrupt processing.

Still composition graphs 2, so-called power supply control refers to, CPU 13 first not Trigger Logic chip 12 in the process of interrupt processing, by power supply 11 and the power pin V1 newly inserting the module slot 10 of hardware module 20, transfers to judge whether current power unit volume residual meets the power unit quantity required of the hardware module 20 newly inserted.If met, then CPU 13 Trigger Logic chip 12 is by power supply 11 and the power pin V1 conducting of newly inserting the module slot 10 at hardware module 20 place, make power supply 11 can by the hardware pins (not identifying in Fig. 2) contacted corresponding with power pin V1 in power pin V1 and hardware module 20 for hardware module 20 powers on, then CPU 13 exits interrupt processing; Otherwise CPU13 directly exits interrupt processing, makes power supply 11 remain on off-state with the power pin V1 of the module slot 10 at hardware module 20 place of newly inserting, and namely the new hardware module 20 inserted can not be powered on.

Wherein, CPU 13 can from a slice nonvolatile memory 21 (such as E of the new hardware module 20 inserted ²pROM) obtain in its judge needed for the power unit quantity required of this hardware module 20, but because the hardware module 20 newly inserted now not yet powers on, therefore, need to arrange an accessory power supply 14 separately for nonvolatile memory 21 local of the new hardware module 20 inserted powers on.

Specifically, module slot 10 has local power pin V2 and I ²c bus pin, this local power pin V2 and accessory power supply 14 keep conducting state, I always ²c bus pin then passes through I ²c bus is connected with CPU 13; The nonvolatile memory 21 of the hardware module 20 inserted has and local power pin V2 and I ²corresponding and the hardware pins of contact of C bus pin, makes that nonvolatile memory 21 can be powered on by accessory power supply 14, power unit quantity required in nonvolatile memory 21 can pass through I by CPU 13 ²c bus reads.

Although the power supply control to hardware module 20 can be realized with upper type, because which must realize based on bus transfer under hardware module 20 is in source state, thus there is following defect:

1, require that hardware module 20 must have the circuit be exclusively used in as nonvolatile memory 21 local power, thus cause the design of hardware module 20 (especially undersized hardware module 20) complicated;

2, module slot 10 must provide the duplicate supply of power supply 11 and accessory power supply 14, causes the design of module slot 10 complicated;

3, need by the slower I of transfer rate ²the power unit quantity required that C bus obtains, causes the processing time to increase;

4, cannot compatibility is reserved can be independently-powered and there is I ²the hardware module of the nonvolatile memory 21 of C bus interface.

In addition, also must participate in power supply control by CPU 13 with upper type, this just adds the burden of CPU 13 to a certain extent.

Summary of the invention

In view of this, the invention provides a kind of device for realizing power supply control to hardware module and a kind of method for realizing power supply control to hardware module.

A kind of device for realizing power supply control to hardware module provided by the invention, comprise module slot and logic chip and power supply, each module slot has power pin, ground pin and is pulled up the hot plug pin into high level state;

The hot plug pin of each module slot is at least two; The hardware module conducting selectively that all hot plug pins of each module slot can be inserted into this module slot to this module slot ground pin and become low level state, to form the level state combination of any one non-full height of the power unit quantity required representing this hardware module;

Logic chip to be combined from overall height level state at all hot plug pins being tested with module slot and becomes after any one non-full height level state combines, corresponding power unit quantity required is identified according to this kind of non-full height level state combination detected, if current power unit volume residual is more than or equal to the power unit quantity required identified, then by the power pin of this module slot and power supply conducting; Otherwise, keep the power pin of this module slot and the disconnection of power supply;

Logic chip to be combined from any one non-full height level state at all hot plug pins being tested with module slot and becomes after overall height level state combines, and the power pin of this module slot and power supply is disconnected.

Logic chip comprises:

Pin senses logical circuit, detects the level state of all hot plug pins of each module slot;

Quantity recognition logic circuit, to be combined from overall height level state there being all hot plug pins of module slot and become after any one non-full height level state combines, the combination of the non-full height level state of this module slot detected is identified as corresponding power unit quantity required;

Control execution logic circuit, have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after, if current power unit volume residual is more than or equal to the power unit quantity required identified, then by the power pin of this module slot and power supply conducting, otherwise, keep the power pin of this module slot and the disconnection of power supply; Have all hot plug pins of module slot from any one non-full height level state combine become overall height level state combine after, the power pin of this module slot and power supply are disconnected.

Logic chip performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual further.

This device comprises CPU further;

Logic chip obtains power unit that CPU issues further can be set to the initial value of power unit volume residual with sum with sum by power unit;

Logic chip further after by the power pin of arbitrary module slot and power supply conducting to CPU reporting interruption, to notify to be inserted with the hardware module powered in this module slot of CPU;

Logic chip further after the power pin of arbitrary module slot and power supply are disconnected to CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts.

Logic chip comprises:

Control execution logic circuit, obtain the power unit that issues of CPU and power unit can be set to the initial value of power unit volume residual with sum with sum, and, safeguard that power unit can with sum; Have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after, if judge that current power unit volume residual is more than or equal to the power unit quantity required identified, then by the power pin of this module slot and power supply conducting and upgrade power unit can with sum, otherwise, keep the power pin of this module slot and the disconnection of power supply; Have all hot plug pins of module slot from any one non-full height level state combine become overall height level state combine after, the power pin of this module slot and power supply are disconnected;

Interruption reports logical circuit, have the power pin of module slot and power supply is switched on and after being disconnected to CPU reporting interruption.

Logic chip comprises the access interface logical circuit can accessed by CPU further;

Access interface logical circuit safeguard have can by CPU write power unit can with sum power unit can use Total no field;

And access interface logical circuit also safeguards have plug attribute field, interruption status field and power-up state field for each module slot respectively, wherein:

Plug attribute field can be set to by pin senses logical circuit the mark whether being inserted with hardware module in module slot corresponding to expression, knows in corresponding module slot whether be inserted with hardware module for CPU;

Power-up state field can be controlled execution logic circuit and is set to represent the mark that the power pin of corresponding module slot is turned on or off with power supply, knows whether the module slot of correspondence powers on to hardware module for CPU;

Interruption status field can be set to represent that corresponding module slot has by pin senses logical circuit and interrupt mark to be processed, with triggered interrupts report logical circuit have the power pin of module slot and power supply to be switched on and after being disconnected according to this mark to CPU reporting interruption;

Interruption status field also can be set to represent that the module slot of correspondence is without interruption mark to be processed by CPU, reports logical circuit to stop to CPU reporting interruption to make interruption.

This device comprises CPU further, and performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual by CPU.

Logic chip further all hot plug pins being tested with module slot to be combined from any one non-full height level state become overall height level state combine after to CPU reporting interruption, to notify that being inserted with hardware module in this module slot of CPU inserts;

CPU obtains the power unit quantity required identified further from logic chip;

Logic chip, further after CPU judges that the current power unit volume residual of expression that arbitrary module slot issues is more than or equal to the power unit quantity required identified, receives expression that CPU issues by the instruction of the power pin of respective modules slot and power supply conducting and performs the operation by the power pin of this module slot and power supply conducting according to this instruction;

Logic chip comprises:

Control execution logic circuit, have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after, if receive expression that CPU issues by the instruction of the power pin of respective modules slot and power supply conducting, then perform the operation by the power pin of this module slot and power supply conducting according to this instruction; Have all hot plug pins of module slot from any one non-full height level state combine become overall height level state combine after, the power pin of this module slot and power supply are disconnected;

Interruption reports logical circuit, have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after and after the power pin and power supply that have module slot disconnect, the interruption to CPU reports the backward CPU reporting interruption that is triggered.

Access interface logical circuit safeguards have plug attribute field, interruption status field, power unit demand field and power-up state field for each module slot respectively, wherein:

Plug attribute field can be set to by pin senses logical circuit the mark whether being inserted with hardware module in module slot corresponding to expression, knows in corresponding module slot whether have hardware module to insert for CPU;

Power unit demand field by the power unit quantity required of the module slot of quantity recognition logic circuit write correspondence, can obtain for CPU;

Power-up state field can be set to represent the corresponding power pin of module slot and the mark of power supply conducting by CPU, issues to realize CPU the instruction represented the power pin of respective modules slot and power supply conducting;

Power-up state field also can be controlled execution logic circuit and is set to represent the mark that the power pin of corresponding module slot and power supply disconnect, and knows that the hardware module powered in this module slot is de-energized and extracts for CPU;

Interruption status field can be set to represent that corresponding module slot has by pin senses logical circuit and interrupt mark to be processed, reports logical circuit after having all hot plug pins of module slot to be combined from overall height level state to become any one non-full height level state to combine and after the power pin and power supply that have module slot disconnect to CPU reporting interruption with triggered interrupts;

This device comprises CPU further, alternatively performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual by logic chip and CPU.

CPU issues to logic chip further and represents that described judgement and described maintenance are the notices being performed by logic chip or performed by CPU.

For the situation being performed described judgement and described maintenance by logic chip, logic chip obtains power unit that CPU issues further can be set to the initial value of power unit volume residual with sum with sum by power unit; Logic chip further after by the power pin of arbitrary module slot and power supply conducting to CPU reporting interruption, to notify to be inserted with the hardware module powered in this module slot of CPU; Logic chip further after the power pin of arbitrary module slot and power supply are disconnected to CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts;

For the situation being performed described judgement and described maintenance by CPU, logic chip further all hot plug pins being tested with module slot to be combined from any one non-full height level state become overall height level state combine after to CPU reporting interruption, to notify that being inserted with hardware module in this module slot of CPU inserts; CPU further from logic chip obtain identify power unit quantity required, perform described judgement and described maintenance for CPU; Logic chip, further after CPU judges that the current power unit volume residual of expression that arbitrary module slot issues is more than or equal to the power unit quantity required identified, receives expression that CPU issues by the instruction of the power pin of respective modules slot and power supply conducting and performs the operation by the power pin of this module slot and power supply conducting according to this instruction; Logic chip further after the power pin of arbitrary module slot and power supply are disconnected to CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts.

Logic chip comprises:

Control execution logic circuit, the described judgement of expression issued according to CPU and described maintenance are the notices being performed by logic chip or performed by CPU, determine the described judgement whether being responsible for being performed by logic chip and described maintenance;

For the situation being performed described judgement and described maintenance by logic chip, control execution logic circuit to obtain the power unit that issues of CPU and power unit can be set to the initial value of power unit volume residual with sum with sum, and perform the described maintenance be responsible for by logic chip; Have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after, if judge that current power unit volume residual is more than or equal to the power unit quantity required identified, then by the power pin of this module slot and power supply conducting, otherwise, keep the power pin of this module slot and the disconnection of power supply; Have all hot plug pins of module slot from any one non-full height level state combine become overall height level state combine after, the power pin of this module slot and power supply are disconnected;

For the situation being performed described judgement and described maintenance by CPU, control execution logic circuit have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after, if receive expression that CPU issues by the instruction of the power pin of respective modules slot and power supply conducting, then perform the operation by the power pin of this module slot and power supply conducting according to this instruction, otherwise, keep the power pin of this module slot and the disconnection of power supply; Have all hot plug pins of module slot from any one non-full height level state combine become overall height level state combine after, the power pin of this module slot and power supply are disconnected;

Interruption reports logical circuit, for the situation being performed described judgement and described maintenance by logic chip, have the power pin of module slot and power supply is switched on and after being disconnected to CPU reporting interruption; For the situation being performed described judgement and described maintenance by CPU, have all hot plug pins of module slot from overall height level state combine become any one non-full height level state combine after and after the power pin and power supply that have module slot disconnect to CPU reporting interruption.

Access interface logical circuit is safeguarded to have and is controlled to safeguard that selection field and power unit can use Total no field, wherein:

Control safeguard select field can by CPU be set to represent by logic chip or the mark being performed described judgement and described maintenance by CPU, with realize CPU issue represents described judgement and described maintenance be by control execution logic circuit execution or the notice performed by CPU;

Power unit can with Total no field for performed by logic chip described judgement and described maintenance situation can by CPU write power unit can with sum, with realize CPU issue power unit can with sum;

And access interface logical circuit also safeguards have plug attribute field, interruption status field, power unit demand field and power-up state field for each module slot respectively, wherein:

Plug attribute field can be set to represent the mark having hardware module insertion or hardware module to be pulled out in the module slot of correspondence by pin senses logical circuit, knows in corresponding module slot whether be inserted with hardware module for CPU;

Power unit demand field by the power unit quantity required of the module slot of quantity recognition logic circuit write correspondence, can obtain for CPU for the situation being performed described judgement and described maintenance by CPU;

Power-up state field can be controlled execution logic circuit for the situation being performed described judgement and described maintenance by logic chip and is set to represent the mark that the power pin of corresponding module slot is turned on or off with power supply, the hardware module knowing in the module slot of correspondence for CPU powered on or correspondence module slot in the hardware module that powered on be de-energized and extract; Power-up state field can be set to represent the corresponding power pin of module slot and the mark of power supply conducting or be controlled execution logic circuit by CPU for the situation that CPU performs described judgement and described maintenance and be set to represent the mark that the power pin of corresponding module slot and power supply disconnect, and issues and represents to realize CPU the instruction of the power pin of respective modules slot and power supply conducting or confession CPU are known that the hardware module powered in corresponding module slot is de-energized and extracts;

Interruption status field can be set to represent that corresponding module slot has by pin senses logical circuit and interrupt mark to be processed, be switched on to report the power pin and power supply that logical circuit is having module slot for the situation triggered interrupts being performed described judgement and described maintenance by logic chip, and be disconnected rear according to this mark to CPU reporting interruption, the situation triggered interrupts also performing described judgement and described maintenance for CPU reports logical circuit after having all hot plug pins of module slot to be combined from overall height level state to become any one non-full height level state to combine, and to CPU reporting interruption after the power pin and power supply that have module slot disconnect,

Control to safeguard and select the initial default state of field to be represent the mark being performed described judgement and described maintenance by control execution logic circuit;

The initial default state of plug attribute field is the mark representing the interior hardware module without inserting of corresponding module slot;

The initial default state of interruption status field is represent that the module slot of correspondence is without interruption mark to be processed;

The initial default state of power-up state field is the mark representing that the power pin of corresponding module slot and power supply disconnect.

A kind of method for realizing power supply control to hardware module provided by the invention, be applied in the electronic equipment comprising some module slots and a power supply, each module slot has power pin, ground pin and is pulled up the hot plug pin into high level state;

The method comprises: the hot plug pin of each module slot is all set at least two, the hardware module conducting selectively making all hot plug pins of each module slot can be inserted into this module slot to this module slot ground pin and become low level state, to form any one non-full height level state combination of the power unit quantity required representing this hardware module;

The method also comprises:

Being combined from overall height level state at all hot plug pins being tested with module slot becomes after any one non-full height level state combines, corresponding power unit quantity required is identified according to this kind of non-full height level state combination detected, if current power unit volume residual is more than or equal to the power unit quantity required identified, then by the power pin of this module slot and power supply conducting; Otherwise, keep the power pin of this module slot and the disconnection of power supply;

Being combined from any one non-full height level state at all hot plug pins being tested with module slot becomes after overall height level state combines, and the power pin of this module slot and power supply is disconnected.

Described electronic equipment comprises CPU further;

The method is outside or perform whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual further by CPU at CPU.

The method comprises further: reception CPU issues and represents that described judgement and described maintenance perform or the notice performed by CPU in CPU outside.

For described judgement and the described situation being maintained in CPU outside and performing, the method comprises further: obtain the power unit that issues of CPU and power unit can be set to the initial value of power unit volume residual with sum with sum; The method further after by the power pin of arbitrary module slot and power supply conducting to CPU reporting interruption, to notify to be inserted with the hardware module powered in this module slot of CPU; The method further after the power pin of arbitrary module slot and power supply are disconnected to CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts;

For the situation being performed described judgement and described maintenance by CPU, the method comprises further: all hot plug pins being tested with module slot to be combined from any one non-full height level state become overall height level state combine after to CPU reporting interruption, to notify that being inserted with hardware module in this module slot of CPU inserts; The power unit quantity required that the method enables CPU obtain to identify further, perform described judgement and described maintenance for CPU; The method, further after CPU judges that the current power unit volume residual of expression that arbitrary module slot issues is more than or equal to the power unit quantity required identified, receives expression that CPU issues by the instruction of the power pin of respective modules slot and power supply conducting and performs the operation by the power pin of this module slot and power supply conducting according to this instruction; The method further after the power pin of arbitrary module slot and power supply are disconnected to CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts.

As seen from the above technical solution, the hot plug pin of each module slot is expanded at least two by one of the prior art by the present invention, the level state combination of all hot plug pins after expansion, except the plug state that can whether have hardware module to insert in representation module slot, can also represent the power unit quantity required of the hardware module of insertion.Therefore, by detecting the level state of all hot plug pins when hardware module is in passive states, while identifying plug state, power unit quantity required can be got in the mode of non-bus transmission.Thus, the design complexity of hardware module and module slot can be reduced, shorten the time needed for power supply control and be easy to compatible various hardware module.

In addition, in the present invention, do not require that CPU must participate in power supply control, thus can offloading the CPU when needed.

Accompanying drawing explanation

Fig. 1 is the module slot of existing modular router and the schematic diagram of hardware module;

Fig. 2 is for realizing the partial internal structure schematic diagram of power supply control to hardware module in existing modular router;

Fig. 3 is for realizing the structure drawing of device of power supply control to hardware module in the embodiment of the present invention;

Fig. 4 is the schematic diagram that hardware module can be made to be applicable to a kind of breakout box of device as shown in Figure 3;

Fig. 5 a to Fig. 5 g is the mount structure instance graph of the hardware module being applicable to device as shown in Figure 3;

Fig. 6 is the schematic diagram of a kind of preferred logic structure of logic chip as shown in Figure 3 in device;

The schematic diagram of various access fields of Fig. 7 for using in logical organization as shown in Figure 6;

Fig. 8 is for realizing the method flow diagram of power supply control to hardware module in the embodiment of the present invention.

Embodiment

For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.

Fig. 3 is for realizing the structure drawing of device of power supply control to hardware module in the embodiment of the present invention.As shown in Figure 3, device 300 for realizing power supply control to hardware module in the present embodiment comprises some module slots 30 (illustrate only in Fig. 3) and logic chip 32 and a power supply 31, and each module slot 30 has power pin V1, ground pin P0 and is pulled up the hot plug pin P1 ~ P3 into high level state.

Wherein, in each module slot 30, extending to 3 hot plug pin P1 ~ P3 in the present embodiment is be different from prior art the situation only having 1 hot plug pin P1.

During specific implementation, the idle pin of module slot 30 can be utilized to be used as newly-increased hot plug pin P2 and P3, also additionally can to increase the new pin that 2 are used as hot plug pin P2 and P3.

Correspondingly, hardware module 40, except having corresponding hardware pins P0 ' and P1 ', also should set up the hardware pins P2 ' corresponding with hot plug pin P2 and P3 and P3 '.

During specific implementation, as long as guarantee that hardware pins P0 ' can contact with ground pin P0 after hardware module 40 insert module slot 30, and hardware pins P1 ' ~ P3 ' can contact in mode one to one with hot plug pin P1 ~ P3 respectively after hardware module 40 insert module slot 30, both the idle pin of hardware module 40 can have been utilized to be used as hardware pins P2 ' and P3 ', also additionally can increase by 2 and be used as hardware pins P2 ' and P3 ', even if occur that hardware module 40 does not support to set up the situation of hardware pins P2 ' and P3 ', also the breakout box 50 additionally with hardware pins P2 ' and P3 ' as shown in Figure 4 can be utilized to realize the grafting of hardware module 40 and module slot 30, but need the hardware pins P0 ' of original for hardware module 40 mutual conduction and P1 ' to disconnect.

In addition, at least 1 in hardware pins the P1 ' ~ P3 ' of hardware module 40 (or breakout box 50) is connected to hardware pins P0 ' and remaining suspension, is represented by dotted lines in Fig. 5 a to Fig. 5 g and then lists all possible 7 kinds of situations in Fig. 3 and Fig. 4 in order to contain all possible 7 kinds of situations between hardware pins P1 ' ~ P3 ' and hardware pins P0 '.

Based on said structure:

Each module slot 30 is when inserting without hardware module 40, and its hot plug pin P1 ~ P3 being extended to 3 is all pulled up as high level state, the level state combination namely forming specific overall height; Like this, it be 3 bits is the binary number " 111 " of " 1 " entirely that the combination of the level state of the overall height of 3 hot plug pin P1 ~ P3 may correspond to, the state of extracting inserted for not having hardware module 40 in representation module slot 30;

Each module slot 30 is after having hardware module 40 to insert, its ground pin P0 contacts with the hardware pins P0 ' of hardware module 40, its hot plug pin P1 ~ P3 being extended to 3 contacts correspondingly with hardware pins the P1 ' ~ P3 ' of hardware module 40 respectively, now, according to hardware pins P1 ' ~ P3 ' arbitrary connection and open combinations state in corresponding diagram 5a to Fig. 5 g respectively respectively and between hardware pins P0 ', hardware module 40 conducting selectively that hot plug pin P1 ~ P3 can be inserted into this module slot 30 to this module slot 30 ground pin P0 and become low level state, namely the one in the level state combination of 7 kinds of corresponding non-full height that may occur is formed, like this, it be 3 bits is not in the binary number " 110 " of " 1 ", " 101 ", " 100 ", " 011 ", " 010 ", " 001 ", " 000 " entirely that the level state combination of the non-full height of 3 hot plug pin P1 ~ P3 may correspond to, these 3 bits entirely for the binary number of " 1 " is except the insert state having hardware module 40 to insert in representation module slot 30, can not also represent 7 kinds of power unit quantity requireds that the hardware module 40 of insertion may occur.

The implication that 3 bit binary number corresponding to the various level combinations of 3 hot plug pin P1 ~ P3 represent respectively is listed in table 1.

P3	P2	P1	Represent implication (for each power cell for 10W)
				1	1	1	Hardware module is not had in module slot
1	1	0	There is hardware module in module slot and need 2 power cell 0W-20W
				1	0	1	There is hardware module in module slot and need 3 power cell 20W-30W
1	0	0	There is hardware module in module slot and need 4 power cell 30W-40W
				0	1	1	There is hardware module in module slot and need 5 power cell 40W-50W
0	1	0	There is hardware module in module slot and need 6 power cell 50W-60W
				0	0	1	There is hardware module in module slot and need 7 power cell 60W-70W
0	0	0	There is hardware module in module slot and need 8 power cell 70W-80W

Table 1

Based on aforesaid way:

Logic chip 32 the hot plug pin P1 ~ P3 being tested with module slot 30 to be combined from overall height level state become all the other 7 kinds of non-full height level states combine in any one after, corresponding power unit quantity required is identified according to this kind of non-full height level state combination detected, if current power unit volume residual (namely power unit can deduct all differences being in the power unit quantity required of the hardware module 40 of power-up state with sum) is more than or equal to the power unit quantity required identified, then by the power pin V1 of this module slot 30 and power supply 31 conducting, otherwise, keep the disconnection of the power pin V1 of this module slot 30 and power supply 31 until current power unit volume residual is more than or equal to the power unit quantity required identified from this module slot 30,

Logic chip 32 to be become after overall height level state combines at the hot plug pin P1 ~ P3 being tested with module slot 30 from any one during 7 kinds of non-full height level states combine, the power pin V1 of this module slot 30 and power supply 31 are disconnected.

Visible, when the hardware module 40 of logic chip 32 in insert module slot 30 is in passive states, namely identify plug state and the power unit quantity required getting hardware module 40 in the mode of non-bus transmission by detecting the level state of 3 hot plug pin P1 ~ P3 simultaneously.Thus, both there is independently-powered circuit without the need to hardware module 40, also provided duplicate supply, also without the need to passing through I without the need to module slot 30 ²c bus transmitted power unit quantity required, thus can reduce the design complexity of hardware module 40 and module slot 30 and the time shortened needed for power supply control.

And, utilize the level state of 3 hot plug pin P1 ~ P3 to represent the mode of power unit quantity required, only need simply to adjust the hardware pins of various hardware module according to such as table 1 or directly set up breakout box 50 as shown in Figure 4, be thus also easy to compatible various types of hardware module.

Still see Fig. 3, the device 300 for realizing power supply control to hardware module in the present embodiment also comprises CPU 33.But, in the present embodiment, do not require that CPU 33 must participate in power supply control.Namely, whether current power unit volume residual mentioned above is more than or equal to the judgement of two kinds of situations of the power unit quantity required identified, and the maintenance (deduct the power unit quantity required of the hardware module 40 newly powered on by power unit volume residual and be added to power unit volume residual at the power unit quantity required of the hardware module 40 of new power-off) to current power unit volume residual mentioned above, both can be responsible for performing, also can being responsible for execution by CPU 33 by logic chip 32, instead of must be performed by CPU.

Above-mentioned judgement and safeguard can be immobilize by logic chip 32 or performed by CPU 22 with immobilizing; Or, also can be the above-mentioned judgement of expression that issues to logic chip 32 according to CPU 33 and above-mentioned maintenance be the notice being performed by logic chip 32 or performed by CPU 33, and dynamically make logic chip 32 and CPU 33 alternatively perform.For the situation of dynamically selecting, if CPU 33 does not issue this notice, then give tacit consent to and be responsible for execution by logic chip 32.

But no matter above-mentioned judgement and above-mentioned maintenance perform the need of CPU 33, all there will not be CPU 33 to pass through I in the present embodiment ²c bus obtains the situation of the power unit quantity required of hardware module 40.

Specifically:

Be responsible for for by logic chip 32 situation performing above-mentioned judgement and above-mentioned maintenance, logic chip 32 further (such as when device 300 initialization) obtains power unit that CPU 33 issues and power unit can be set to the initial value of power unit volume residual with sum with sum; Logic chip 32 further after by the power pin V1 of arbitrary module slot 30 and power supply 31 conducting to CPU 33 reporting interruption, to notify to be inserted with the hardware module 40 powered in this module slot 30 of CPU 33; Logic chip 32 further after the power pin V1 of arbitrary module slot 30 and power supply 31 are disconnected to CPU33 reporting interruption, to notify that the hardware module 40 powered in this module slot 30 of CPU 33 is de-energized and extracts;

For the situation being performed above-mentioned judgement and above-mentioned maintenance by CPU 33, logic chip 32 need all hot plug pin P1 ~ P3 being tested with module slot 30 to be combined from any one non-full height level state become overall height level state combine after to CPU 33 reporting interruption, to notify that being inserted with hardware module 40 in this module slot 30 of CPU 33 inserts; CPU 33 obtains further power unit quantity required that logic chip 32 identifies, performs above-mentioned judgement and above-mentioned maintenance for CPU 33; Logic chip 32 is further after CPU 33 judges that the current power unit volume residual of arbitrary module slot 30 is more than or equal to the power unit quantity required identified, receive the expression that issues of CPU 33 by the instruction of the power pin V1 of respective modules slot 30 and power supply 31 conducting and according to this instruction by the power pin V1 of respective modules slot 30 and power supply 31 conducting, if do not receive this instruction, then logic chip 32 can keep the power pin V1 of respective modules slot 30 and power supply 31 to disconnect.

Fig. 6 is the schematic diagram of a kind of preferred logic structure of logic chip as shown in Figure 3 in device.As shown in Figure 6, the present embodiment also provides a kind of preferred logical organization for the logic chip 32 in device 300 as shown in Figure 3, and this logical organization comprises: pin senses logical circuit 321, quantity recognition logic circuit 322, control execution logic circuit 323, interrupt reporting logical circuit 324, access interface logical circuit 325.

Pin senses logical circuit 321, detects the level state of the hot plug pin P1 ~ P3 of each module slot 30.

Situation for being performed aforementioned judgement and aforementioned maintenance from logic chip 32: pin senses logical circuit 321 after having the hot plug pin P1 ~ P3 of module slot 30 to be combined from overall height level state to become any one non-full height level state to combine, notice quantity recognition logic circuit 322 and control execution logic circuit 323 and access interface logical circuit 325 and report logical circuit 324 to report to the interruption of CPU 33 to access interface logical circuit 325 triggered interrupts; Being combined from any one non-full height level state at the hot plug pin P1 ~ P3 being tested with module slot 30 becomes after overall height level state combines, and notice controls execution logic circuit 323 and access interface logical circuit 325 and reports logical circuit 324 to report to the interruption of CPU 33 to access interface logical circuit 325 triggered interrupts;

Situation for being performed aforementioned judgement and aforementioned maintenance from CPU 33: pin senses logical circuit 321, after having the hot plug pin P1 ~ P3 of module slot 30 to be combined from overall height level state to become any one non-full height level state to combine, only notifies quantity recognition logic circuit 322 and access interface logical circuit 325 and reports logical circuit 324 to report to the interruption of CPU 33 to access interface logical circuit 325 triggered interrupts; Being combined from any one non-full height level state at the hot plug pin P1 ~ P3 being tested with module slot 30 becomes after overall height level state combines, and notice controls execution logic circuit 323 and access interface logical circuit 325 and reports logical circuit 324 to report to the interruption of CPU 33 to access interface logical circuit 325 triggered interrupts.

Quantity recognition logic circuit 322, become after any one non-full height level state combines knowing that hot plug pin P1 ~ P3 of having module slot is combined from overall height level state, the non-full height level state combination of this module slot 30 detected by pin senses logical circuit 321 is identified as corresponding power unit quantity required.

Situation for being performed aforementioned judgement and aforementioned maintenance by logic chip 32: the power unit quantity required identified is supplied to and controls execution logic circuit 323 by quantity recognition logic circuit 322;

Situation for being performed aforementioned judgement and aforementioned maintenance by CPU 33: the power unit quantity required identified is supplied to access interface logical circuit 325, obtains to supply CPU 33 by quantity recognition logic circuit 322.

Control execution logic circuit 323, obtain from access interface logical circuit 325 the aforementioned judgement of expression that CPU 33 issues and aforementioned maintenance is the notice being performed by logic chip 32 or performed by CPU 33, and determine the aforementioned judgement whether being responsible for being performed by logic chip 32 and aforementioned maintenance according to this.If do not get CPU 33 not issue this notice, then give tacit consent to and performed by the control execution logic circuit 323 in logic chip 32.

Situation for being performed aforementioned judgement and aforementioned maintenance by logic chip 32: control execution logic circuit 323 and obtain from access interface logical circuit 325 power unit that CPU 33 issues and power unit can be set to the initial value of the power unit volume residual safeguarded by it with sum with sum, control execution logic circuit 323 and become after any one non-full height level state combines knowing that hot plug pin P1 ~ P3 of having module slot 30 is combined from overall height level state, judge whether current power unit volume residual is more than or equal to the power unit quantity required identified, if, then the power pin V1 of this module slot 30 and power supply 31 conducting are upgraded its power unit volume residual safeguarded, and the hardware module 40 in this module slot 30 of notice access interface logical circuit 325 powers on, otherwise, keep the power pin V1 of this module slot 30 and the disconnection of power supply 31, until current power unit volume residual is more than or equal to the power unit quantity required identified from this module slot 30, become after overall height level state combines knowing that hot plug pin P1 ~ P3 of having module slot 30 is combined from any one non-full height level state, the power pin V1 of this module slot 30 and power supply 31 are disconnected, and the hardware module 40 powered in this module slot 30 of notice access interface logical circuit 325 is de-energized and extracts,

Situation for being performed aforementioned judgement and aforementioned maintenance by CPU 33: control execution logic circuit 323 after CPU 33 judges that current power unit volume residual is more than or equal to the power unit quantity required identified, expression that CPU 33 issues can be got by the instruction of the power pin V1 of respective modules slot 30 and power supply 31 conducting from access interface logical circuit 325, according to this instruction by the power pin V1 of this module slot 30 and power supply 31 conducting, if do not get this instruction, then keep the power pin V1 of this module slot 30 and the disconnection of power supply 31, until get this instruction, become after overall height level state combines knowing that hot plug pin P1 ~ P3 of having module slot 30 is combined from any one non-full height level state, the power pin V1 of this module slot 30 and power supply 31 are disconnected, and the hardware module 40 powered in this module slot 30 of notice access interface logical circuit 325 is de-energized and extracts.

Interruption reports logical circuit 324, decides when need the module slot 30 of interrupting for being triggered to perform interruption report by monitoring access interface logical circuit 325.

Situation for being performed aforementioned judgement and aforementioned maintenance from logic chip 32: have module slot 30 due to its hot plug pin P1 ~ P3 from overall height level state combine become any one non-full height level state combine and be triggered interrupt time, interruption reports logical circuit 324 can not immediately to CPU 33 reporting interruption, but need to wait for that the power pin V1 of this module slot 30 and power supply 31 are switched on, namely, interrupt reporting logical circuit 324 after having the power pin V1 of module slot 30 and power supply 31 to be switched on to CPU33 reporting interruption, to notify that in this module slot 30 of CPU 33, hardware module 40 powers on, have module slot 30 due to its hot plug pin P1 ~ P3 from any one non-full height level state combine become overall height level state combine and be triggered interrupt time, interruption reports logical circuit 324 immediately to CPU 33 reporting interruption, that is, interrupt report logical circuit 324 have the hot plug pin P1 ~ P3 of module slot 30 from any one non-full height level state combine become overall height level state combine after to CPU 33 reporting interruption, to notify that the hardware module 40 powered in this module slot 30 of CPU 33 is de-energized and extracts,

Situation for being performed aforementioned judgement and aforementioned maintenance from CPU 33: have the hot plug pin P1 ~ P3 of module slot 30 from overall height level state combine become any one non-full height level state combine and be triggered interrupt time, interrupting reporting logical circuit 324 to be switched on power supply 31 without the need to the power pin V1 waiting for this module slot 30 can directly to CPU 33 reporting interruption, to notify having hardware module 40 to insert in this module slot 30 of CPU 33; Have the hot plug pin P1 ~ P3 of module slot 30 from any one non-full height level state combine become overall height level state combine and be triggered interrupt time, interrupt report logical circuit 324 directly to CPU 33 reporting interruption, to notify that the hardware module 40 powered in this module slot 30 of CPU 33 is de-energized and extracts.

Access interface logical circuit 325, it is safeguarded has and can be safeguarded that selection field and a power unit can use Total no field by the control that CPU 33 accesses, and, also safeguard for each module slot 30 plug attribute field, an interruption status field, a power unit demand field and the power-up state field having and can be accessed by CPU 33 respectively.

Specifically see Fig. 7:

Control to safeguard and select field, it can be set to represent by CPU 33 and perform the mark 0 of (be namely equivalent to by control execution logic circuit 323 be responsible for execution) aforementioned judgement and aforementioned maintenance by logic chip 32 or represent the mark 1 being performed aforementioned judgement and aforementioned maintenance by CPU 33, issues represent that aforementioned judgement and aforementioned maintenance perform (being namely equivalent to be responsible for execution by control execution logic circuit 323) or the notice performed by CPU 33 by logic chip 32 in order to realize CPU 33.

Power unit can use Total no field, it is for the situation being performed aforementioned judgement and aforementioned maintenance by logic chip 32, can be write power unit by CPU 33 can with sum (such as representing 32 power units with 0x20), the situation in order to (to be namely equivalent to be responsible for execution by controlling execution logic circuit 323) aforementioned judgement and aforementioned maintenance for being performed by logic chip 32 realize CPU 33 issue power unit can with sum; It can not be used for the situation being performed aforementioned judgement and aforementioned maintenance by CPU 33.

Plug attribute field, it is for the two kinds of situations being performed aforementioned judgement and aforementioned maintenance by logic chip 32 and performed aforementioned judgement and aforementioned maintenance by CPU 33, all can be set to represent by pin senses logical circuit 321 mark 1 that has hardware module 40 to insert in corresponding module slot 30 or represent the mark 0 that the hardware module 40 in corresponding module slot 30 is pulled out, know in corresponding module slot 30 whether have hardware module 40 for CPU 33;

Power unit demand field, it can not be used for the situation being performed aforementioned judgement and aforementioned maintenance by logic chip 32; It is for the situation being performed aforementioned judgement and aforementioned maintenance by CPU 33, can be written in by quantity recognition logic circuit 322 the power unit quantity required (such as represent needs 2 power units with 0x2, represent needs 3 power units with 0x3 ... represent needs 8 power units with 0x8) that respective modules slot 30 identifies, obtain for CPU 33;

Power-up state field, it is for the situation being performed aforementioned judgement and aforementioned maintenance by logic chip 32, can by the mark 0 controlling execution logic circuit 323 and be set to represent that the power pin V1 of corresponding module slot 30 disconnect with the mark 1 of power supply 31 conducting, the power pin V1 representing corresponding module slot 30 and power supply 31, the hardware module 40 that the hardware module 40 known in this module slot 30 for CPU 33 has powered on and powered in this module slot 30 is de-energized and extracts; It is for the situation being performed aforementioned judgement and aforementioned maintenance by CPU 33, can by CPU 33 be set to represent corresponding module slot 30 the mark 1 of power pin V1 with power supply 31 conducting, controlled execution logic circuit 323 and be set to represent the mark 0 that the power pin V1 of corresponding module slot 30 and power supply 31 disconnect, issue represent that the hardware module 40 by having powered in the instruction of power pin V1 and power supply 31 conducting and this module slot 30 is de-energized and extracts to realize CPU 33.

Interruption status field performs aforementioned judgement and aforementioned maintenance for by logic chip 32, and two kinds of situations of aforementioned judgement and aforementioned maintenance are performed by CPU 33, all can be set to represent that corresponding module slot has by pin senses logical circuit 321 and interrupt mark to be processed, be switched on having the power pin V1 of module slot 30 and power supply 31 to report logical circuit 324 for the situation triggered interrupts being performed described judgement and described maintenance by logic chip 32, and be disconnected rear according to this mark to CPU 33 reporting interruption, the situation triggered interrupts also performing described judgement and described maintenance for CPU 33 reports logical circuit 324 after having all hot plug pin P1 ~ P3 of module slot 30 to be combined from overall height level state to become any one non-full height level state to combine, and to CPU 33 reporting interruption after having the power pin V1 of module slot 30 and power supply 31 to disconnect,

Interruption status field is for being performed aforementioned judgement and aforementioned maintenance by logic chip 32 and being performed two kinds of situations of aforementioned judgement and aforementioned maintenance by CPU 33, also all can be set to represent that the module slot 30 of correspondence is without interruption mark to be processed, reports logical circuit 324 to stop to CPU reporting interruption to make interruption by CPU 33.

In practical application, control to safeguard and select the initial default state of field to be represent the mark 0 being performed (being namely equivalent to be responsible for execution by controlling execution logic circuit 323) aforementioned judgement and aforementioned maintenance by logic chip 32; The initial default state of plug attribute field is the mark 0 representing that the hardware module 40 in the module slot 30 of correspondence is pulled out; The initial default state of interruption status field is represent that the module slot 30 of correspondence is without interruption mark 1 to be processed; The initial default state of power-up state field is the mark 0 representing that the power pin V1 of corresponding module slot 30 and power supply 31 disconnect.

Only for 3 hot plug pin P1 ~ P3 in the device 300 of above embodiment, but in actual applications, as long as the hot plug pin in each module slot 30 meets at least 2 just can produce the effect representing power unit quantity required equally, the span of the power unit quantity required that just can represent can be distinguished to some extent along with the difference of the quantity of hot plug pin.

And the device 300 of above embodiment Dynamic Selection can perform (being namely equivalent to be responsible for execution by control execution logic circuit 323) by logic chip 32 or performs aforementioned judgement and aforementioned maintenance by CPU 33.But in practical application, also alternatively can fix and perform (be namely equivalent to by control execution logic circuit 323 be responsible for execution) by logic chip 32 or perform aforementioned judgement and aforementioned maintenance by CPU 33, now, just do not need CPU 33 to issue the operations such as corresponding notice just no longer to need more yet.Correspondingly, in figure 6, aforementionedly to judge and aforementioned maintenance dynamically alternatively to perform between logic chip 32 and CPU 33, in practical application, if perform aforementioned judgement and aforementioned maintenance by logic chip 32 or CPU 33 with immobilizing, then can only retain in Fig. 6 be applied to corresponding situation part-structure, operating process and field.

Be more than in the embodiment of the present invention for realizing the detailed description of the device of power supply control to hardware module.Below, then in the embodiment of the present invention be described in detail for method hardware module being realized to power supply control.

For realizing the method for power supply control to hardware module in the present embodiment, be mainly used in the electronic equipment comprising some module slots and a power supply, each module slot has power pin, ground pin and is pulled up the hot plug pin into high level state;

What be different from prior art is, the hot plug pin of each module slot is all set at least two by the method, the hardware module conducting selectively making all hot plug pins of each module slot can be inserted into this module slot to this module slot ground pin and become low level state, to form any one non-full height level state combination of the power unit quantity required representing this hardware module.

Fig. 8 is for realizing the method flow diagram of power supply control to hardware module in the embodiment of the present invention.As shown in Figure 8, the method for realizing power supply control to hardware module in the present embodiment performs following steps for each module slot:

Step 800, detects the level change of all hot plug pins of this module slot, if detect that all hot plug pins of this module slot are combined from overall height level state to become the combination of any one non-full height level state, then performs step 801; If all hot plug pins being tested with module slot are combined from any one non-full height level state become the combination of overall height level state, then perform step 805.

Step 801, identifies corresponding power unit quantity required according to this kind of non-full height level state combination detected, then performs step 802.

Step 802, judges whether current power unit volume residual is more than or equal to the power unit quantity required identified, and if it is performs step 803, otherwise performs step 804.

Step 803, by the power pin of this module slot and power supply conducting, then returns step 800.

Step 804, keeps the power pin of this module slot and the disconnection of power supply, then returns step 802.

Step 805, disconnects the power pin of this module slot and power supply, then returns step 800.

Below be namely the flow process performed for each module slot.

In practical application, in electronic equipment, usually can include a CPU, so, in the method can all perform CPU outside (also having one in the electronic equipment that the method is applied independent of the logic chip outside CPU) in steps.Or, can be performed delivering the maintenance of power unit volume residual further in the judgement in the step 802 of the method and step 803 and 805 by CPU separately.For this reason, the method can receive the judgement in the expression step 802 that CPU issues further and the maintenance in step 803 and 805 performs or the notice performed by CPU in CPU outside, if do not receive this notice that CPU issues, gives tacit consent to and performs so that offloading the CPU in CPU outside.

For being maintained in the situation that CPU outside performs in the judgement in step 802 and step 803 and 805, the method obtains power unit that CPU issues further can be set to the initial value of power unit volume residual with sum with sum by power unit; The method further after step 803 is by the power pin of arbitrary module slot and power supply conducting to CPU reporting interruption, to notify to be inserted with the hardware module powered in this module slot of CPU; The power pin of arbitrary module slot and power supply are disconnected backward CPU reporting interruption, to notify that the hardware module powered in this module slot of CPU is de-energized and extracts by the further step 805 of the method;

For the situation being performed the judgement in step 802 and the maintenance in step 803 and 805 by CPU, the method further each to be combined from any one non-full height level state by the 800 all hot plug pins being tested with module slot become overall height level state combine after to CPU reporting interruption, to notify that being inserted with hardware module in this module slot of CPU inserts; The power unit quantity required that step 801 identifies by the method is further supplied to CPU; The method is further after step 802 to be judged that by CPU the current power unit volume residual of expression that arbitrary module slot issues is more than or equal to the power unit quantity required identified, receiving the expression that issues of CPU by the instruction of power pin and power supply conducting performs the operation by the power pin of this module slot and power supply conducting in step 803 according to this instruction, if do not receive this instruction, then keep the power pin of this module slot and the disconnection of power supply by performing step 804.

The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims

1., for realizing a device for power supply control to hardware module, comprise module slot and logic chip and power supply, the hot plug pin that each module slot has power pin, ground pin and is pulled up as high level state;

It is characterized in that, the hot plug pin of each module slot is at least two; The hardware module conducting selectively that all hot plug pins of each module slot can be inserted into this module slot to this module slot ground pin and become low level state, to form the level state combination of any one non-full height of the power unit quantity required representing this hardware module;

2. device as claimed in claim 1, it is characterized in that, logic chip comprises:

3. device as claimed in claim 1, it is characterized in that, logic chip performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual further.

4. device as claimed in claim 3, it is characterized in that, this device comprises CPU further;

5. device as claimed in claim 4, it is characterized in that, logic chip comprises:

6. device as claimed in claim 5, it is characterized in that, logic chip comprises the access interface logical circuit can accessed by CPU further;

7. device as claimed in claim 1, it is characterized in that, this device comprises CPU further, and performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual by CPU.

8. device as claimed in claim 7, is characterized in that,

9. device as claimed in claim 8, it is characterized in that, logic chip comprises:

10. device as claimed in claim 9, it is characterized in that, logic chip comprises the access interface logical circuit can accessed by CPU further;

11. devices as claimed in claim 1, it is characterized in that, this device comprises CPU further, alternatively performs whether be more than or equal to the judgement of the power unit quantity required identified and the maintenance performed further current power unit volume residual to current power unit volume residual by logic chip and CPU.

12. devices as claimed in claim 11, is characterized in that, CPU issues to logic chip further and represents that described judgement and described maintenance are the notices being performed by logic chip or performed by CPU.

13. devices as claimed in claim 12, is characterized in that,

14. devices as claimed in claim 13, it is characterized in that, logic chip comprises:

15. devices as claimed in claim 14, it is characterized in that, logic chip comprises the access interface logical circuit can accessed by CPU further;

And access interface logical circuit also safeguards have plug attribute field, interruption status field, power unit demand field and power-up state field for each module slot respectively, wherein;

16. devices as claimed in claim 15, is characterized in that,

17. 1 kinds, for realizing the method for power supply control to hardware module, are applied in the electronic equipment comprising some module slots and a power supply, and each module slot has power pin, ground pin and is pulled up the hot plug pin into high level state;

It is characterized in that, the method comprises: the hot plug pin of each module slot is all set at least two, the hardware module conducting selectively making all hot plug pins of each module slot can be inserted into this module slot to this module slot ground pin and become low level state, to form any one non-full height level state combination of the power unit quantity required representing this hardware module;

The method also comprises:

18. methods as claimed in claim 17, it is characterized in that, described electronic equipment comprises CPU further;

19. methods as claimed in claim 18, it is characterized in that, the method comprises further: reception CPU issues and represents that described judgement and described maintenance perform or the notice performed by CPU in CPU outside.

20. methods as claimed in claim 19, is characterized in that,