CN105867568B - A kind of circuit and computer equipment for realizing different chip chamber switchings - Google Patents
A kind of circuit and computer equipment for realizing different chip chamber switchings Download PDFInfo
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- CN105867568B CN105867568B CN201510025996.6A CN201510025996A CN105867568B CN 105867568 B CN105867568 B CN 105867568B CN 201510025996 A CN201510025996 A CN 201510025996A CN 105867568 B CN105867568 B CN 105867568B
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Abstract
The present invention provides a kind of circuit and computer equipment for realizing different chip chamber switchings, wherein the circuit includes circuit reset key, trigger module, switching holding module, starting module, the first chip and the second chip；The trigger module keeps module to connect with the switching；The switching keeps module to connect with the starting module；The starting module is connect with first chip and the second chip；The trigger module is used to keep module to send trigger signal to the switching；In the trigger module, including at least the triggering interface for accessing the trigger signal；The trigger signal is provided by the circuit reset key being of coupled connections with the triggering interface；The switching keeps module to be used to control the starting module according to the trigger signal for chip to be launched and be switched to second chip by first chip.By the circuit, the complexity of the circuit for realizing chip chamber switching is reduced, so that the applicable range of circuit of realization chip chamber switching is wider.
Description
Technical field
The present embodiments relate to field of computer technology more particularly to a kind of circuit for realizing the switching of different chip chambers and
Computer equipment.
Background technique
In computer, server, the product scopes such as work station realize required function by setting chip, such as common
BIOS chip, some information of storage equipment system starting in the BIOS chip, so if BIOS chip goes wrong, just
Need to switch or start back-up BIOS chip.Or in application scenes, different application models is directed in equipment, in order to
Lifting means performance and devise the chip for realizing different function, therefore, under different application scenarios, equipment also needs to select
It selects and starts different chips.
In the prior art, wire jumper can be used to select the chip that need to start, specifically, opening the cabinet of equipment for wire jumper
It is placed on chip to be launched, then booting can just start the chip to be launched；That is, in the prior art,
In order to switch chip to be launched, also need to be equipped with additional selector, such as above-mentioned wire jumper to the product for being provided with multi-chip,
So that the production of product designs complexity, the production efficiency of product is influenced.
Summary of the invention
The embodiment of the present invention provides a kind of circuit and computer equipment for realizing different chip chamber switchings, reduces for real
The complexity of the circuit of existing chip chamber switching, so that the applicable range of circuit of realization chip chamber switching is wider, convenient for mentioning
Rise the various production efficiency of equipment for being configured with multi-chip.
The present invention provides a kind of circuit for realizing different chip chamber switchings, and the circuit includes circuit reset key, trigger mode
Block, switching keep module, starting module, the first chip and the second chip；The trigger module and the switching keep module to connect
It connects；The switching keeps module to connect with the starting module；The starting module and first chip and the second chip connect
It connects；
The trigger module is used to keep module to send trigger signal to the switching；In the trigger module, at least
Including the triggering interface for accessing the trigger signal；The trigger signal with the triggering interface as described in being of coupled connections
Circuit reset key provides；
The switching keeps module to be used for according to the trigger signal, control the starting module by chip to be launched by
First chip is switched to second chip.
The present embodiment additionally provides a kind of computer equipment of circuit including the different chip chamber switchings of above-mentioned realization.
The present invention provides a kind of circuits and computer equipment for realizing different chip chamber switchings, are switching core to be launched
When piece, it is only necessary to before accessing working power to circuit, circuit reset key is made to provide control signal, it can be by chip to be launched
It switches over, the chip after switching will be started after then accessing working power；The present embodiment is realizing different chip chamber switchings
When, it has been multiplexed circuit reset key, has been not required to be equipped with additional switching device, has reduced answering for the circuit for realizing chip chamber switching
Miscellaneous degree is configured with setting for multi-chip so that the applicable range of circuit of realization chip chamber switching is wider convenient for promotion is various
Standby production efficiency.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram for the circuit embodiments one for realizing different chip chamber switchings of the present invention；
Fig. 2 is the schematic diagram of trigger module in a kind of circuit embodiments two for realizing different chip chamber switchings of the present invention；
Fig. 3 is the signal that switching keeps module in a kind of circuit embodiments two for realizing different chip chamber switchings of the present invention
Figure；
Fig. 4 is the schematic diagram of starting module in a kind of circuit embodiments two for realizing different chip chamber switchings of the present invention；
Fig. 5 is first structure diagram in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention；
Fig. 6 is the second structural schematic diagram in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention；
Fig. 7 is third structural schematic diagram in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention；
Fig. 8 is the 4th structural schematic diagram in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention.
Specific embodiment
Fig. 1 is a kind of schematic diagram for the circuit embodiments one for realizing different chip chamber switchings of the present invention.As shown in Figure 1, this
Embodiment includes:
Circuit reset key Z1, trigger module 10, switching keep module 20, starting module 30, the first chip 100 and the second core
Piece；The trigger module 10 keeps module 20 to connect with the switching；The switching keeps module 20 and the starting module 30
Connection；The starting module 30 is connect with first chip 100 and the second chip 200；
The trigger module 10 is used to keep module to send trigger signal to the switching；Specifically, in the trigger mode
In block 10, including at least the triggering interface 40 for accessing trigger signal；That is, trigger module 10 passes through included by it
Triggering interface 40 has accessed trigger signal, keeps module 20 to send then to switching；And above-mentioned trigger signal by with the triggering
The circuit reset key Z1 that interface is of coupled connections is provided；Optionally, when circuit reset key Z1 is in down state, with triggering interface 40
It connects (contact), trigger signal can be provided；When circuit reset key Z1, which is in, bounces state, it is not connect with triggering interface 40
(not contacting).
In the prior art, circuit reset key Z1 is for realizing the reset to circuit；And in the present embodiment, it is multiple to be multiplexed circuit
Position key Z1, allows to provide the trigger signal for realizing chip chamber switching；
The switching keeps module 20 to be used to control the starting module 30 for core to be launched according to the trigger signal
Piece is switched to second chip by first chip.
It is illustrated with being provided with the computer equipment of circuit shown in FIG. 1, default every time open by booting when computer equipment is dispatched from the factory
Dynamic first chip, then before each user presses power button starting computer equipment, since circuit reset key Z1 is not pressed,
I.e. switching keeps module 20 not receive trigger signal, does not control the starting module 30 for chip to be launched by first core
Piece is switched to second chip, therefore after user presses starting key, starting module default the first chip of starting；When first
When failure of chip, need to start the second chip so that computer equipment works normally, or computer equipment needs is needed to be based on
When second chip realizes other function, under computer equipment shutdown situation, user's control circuit reset key Z1 is in and presses shape
State (the circuit reset key Z1 due under computer equipment shutdown situation, being now in down state be for providing trigger signal,
Be not used in and circuit resetted), to triggering interface 40 have input trigger signal, immediately the trigger signal by with trigger module 10
The switching of connection keeps module 20 to obtain, so that the switching keeps module 20 for according to the trigger signal, described in control
Chip to be launched is switched to second chip 200 by first chip 100 by starting module 30, then subsequent user presses
After starting key, starting module 30 is the second chip 200 of starting, realizes cutting for the first chip 100 and the second chip 200
It changes.
It should be noted that above-mentioned first chip and the second chip are relative concept, i.e. the first chip is being touched for indicating
Before sending out module access trigger signal, the chip of starting module default starting, and the second chip connects for indicating in trigger module
After entering trigger signal, chip after starting module switching, to be launched.
In the present embodiment, when switching chip to be launched, it is only necessary to before accessing working power to circuit, answer circuit
Position key provides trigger signal, can switch over chip to be launched, and compared with prior art, the present embodiment is realizing difference
When chip chamber switches, it is multiplexed circuit reset key, has been not required to be equipped with additional selector, reduced for realizing chip chamber switching
The complexity of circuit various be configured with so that the applicable range of circuit of realization chip chamber switching is wider convenient for being promoted
The production efficiency of equipment of multi-chip.
It should be noted that optionally, the present invention provides there are many modes that above-mentioned circuit shown in FIG. 1 may be implemented
Another embodiment is illustrated, specifically, Fig. 2 is to touch in a kind of circuit embodiments two for realizing different chip chamber switchings of the present invention
Send out the schematic diagram of module.As shown in Fig. 2, circuit further includes the system power supply interface S2 for accessing the working power, and touch
In a kind of possible implementation for sending out module 10, trigger module further includes first switch tube Q1, the 4th switching tube Q4 and the
One backup power source S1；The triggering interface 40 is connect with the 4th switching tube Q4；The 4th switching tube Q4 also respectively with institute
The first backup power source S1 is stated to connect with the first switch tube Q1；The first switch tube Q1 also with the system power supply interface S2
Connection；Wherein, after system power supply interface S2 accesses working power, namely the first chip 100 of normal starting or the second chip 200
Afterwards, in order to avoid causing circuit reset key Z1 to provide trigger signal because of user misoperation or other reasons, lead to the first chip
100 or second chip 200 be just switched at work, cause fault, therefore access working power in system power supply interface S2
Afterwards, first switch tube Q1 is for turning off the 4th switching tube Q4, thus even if foregoing circuit reset key Z1 provides trigger signal, but
Since the 4th switching tube Q4 is not turned on, therefore trigger signal cannot be used for switching chip；And work is accessed in system power supply interface S2
Before power supply, the trigger signal that foregoing circuit reset key provides can be transmitted to switching and keep module by the 4th switching tube Q4；
Further, usually in the first 100 failure of chip, by pressing foregoing circuit reset key Z1, keep switching
Module 20 controls starting module 30 for chip to be launched and is switched to the second chip 200 by the first chip 100 according to trigger signal
Afterwards, when user necessarily wishes that circuit powers on (i.e. access foregoing work power supply) every time with bootrom, still starting is in normal
Second chip 200 of state, therefore preferably, the switching in circuit shown in Fig. 1 is kept for module, in the core to be launched
Before piece is switched to the second chip 200 by the first chip 100, it is also used to control the starting module 30 and holds chip to be launched
It is continuous to be set to first chip 100, and after the chip to be launched is switched to the second chip 200 by the first chip 100
It controls the starting module 20 and chip to be launched is persistently set to second chip 200；Chip i.e. to be launched is by first
After chip 100 is switched to the second chip 200, after circuit powers on every time, starting module is that starting is in the second of normal condition
Chip 200；
Specifically, Fig. 3 is that switching keeps module in a kind of circuit embodiments two for realizing different chip chamber switchings of the present invention
Schematic diagram.As shown in figure 3, switching keeps module 20 to open including the 6th switching tube Q6, the 7th in a kind of possible implementation
Close pipe Q7,3rd resistor R3, the 4th resistance R4 and the second backup battery S3；The 6th switching tube Q6 respectively with the trigger mode
Block 10 is connected with the 7th switching tube Q7；The 6th switching tube Q6 is also connect with 3rd resistor R3；7th switching tube
Q7 is also connect with the 4th resistance R4；The 3rd resistor R3 is also connect with the second backup battery S3 with the 4th resistance R4；
The resistance value of the 3rd resistor R3 is less than the resistance value of the 4th resistance R4；Wherein the 6th switching tube Q6 and the 7th switching tube Q7 phase
Mutually cooperation, such as the 6th open the light pipe Q6 shutdown and the 7th switching tube Q7 conducting or the 6th switching tube conducting Q6 and the 7th switch
Pipe Q7 shutdown so that the triggering interface 40 access trigger signal so that chip to be launched be switched to the second chip 200 it
Before, the working power of the circuit access accesses trigger signal for starting the first chip 100, and in the triggering interface 40,
So that chip to be launched is switched to after the second chip 200, the working power of the circuit access is for starting the second chip
200；
In addition, Fig. 4 is a kind of circuit embodiments for realizing different chip chamber switchings of the present invention for starting module 30
The schematic diagram of starting module in two.As shown in figure 4, the starting module further includes that third is opened in a kind of possible implementation
Pipe Q3, second switch Q2, the 5th switching tube Q5 and the 8th switching tube Q8, the third switching tube Q3 and the switching is closed to keep
Module 20 connects, and the third switching tube Q3 is also respectively with second switch Q2, the 8th switching tube Q8 and for accessing the work
Make the system power supply interface S2 connection of power supply；The second switch Q2 is connect with the first chip 100；The 8th switching tube Q8
Also it is connect respectively with system power supply interface S2 and the 5th switching tube Q5；The 5th switching tube Q5 is connect with the second chip 200,
In, in the case where the switching that third switching tube Q3 is connected keeps the control of module 20, each in starting module opens starting module 30
Pipe co-operatively on or off is closed, so that the working power of system power supply interface access starts the first chip or the second core
Piece；
It should be noted that keeping module, starting mould to trigger module, switching respectively using Fig. 2~Fig. 4 in the present embodiment
Block makes signal and explanation, but in practical applications, when constructing a kind of circuit for realizing different chip chamber switchings shown in FIG. 1,
Can be used it is any one or more in Fig. 2~Fig. 4 shown in connection structure in module, other optional realization sides with other modules
Formula is combined, and obtains a kind of circuit for realizing different chip chamber switchings shown in FIG. 1.
In the present embodiment, when switching chip to be launched, it is only necessary to before accessing working power to circuit, answer circuit
Position key provides trigger signal, can switch over chip to be launched, after then will starting switching after access working power
Chip；Compared with prior art, the present embodiment is not required to be equipped with additional selector when realizing the switching of different chip chambers,
The complexity of the circuit for realizing chip chamber switching is reduced, so that the applicable range of circuit of realization chip chamber switching
It is relatively wide, convenient for promoting the various production efficiency of equipment for being configured with multi-chip.
In order to clearly illustrate to realize the circuit of different chip chamber switchings, example is carried out as low level using trigger signal and is said
It is bright, specifically, Fig. 5 is a kind of circuit embodiments for realizing different chip chamber switchings of the present invention when trigger signal is low level
First structure diagram in three；Fig. 6 is the second structure in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention
Schematic diagram；Fig. 7 is third structural schematic diagram in a kind of circuit embodiments three for realizing different chip chamber switchings of the present invention.With reference to figure
5, Fig. 6 and Fig. 7, in the trigger module, the third of triggering interface 40 and the 4th switching tube Q4 for accessing trigger signal
Hold Q43 connection；The second end Q42 of the 4th switching tube Q4 is respectively connect with the first backup power source S1 and first switch tube Q1
First end Q11 connection；The second end Q12 connection system power supply interface S2 of the first switch tube Q1；
The switching keep module in, the second backup battery S3 respectively with the first end R31 of 3rd resistor R3 and the 4th
The first end R41 connection of resistance R4；The second end R32 of the 3rd resistor R3 first end with the 6th switching tube Q6 respectively
Q61 is connected with the second end Q72 of the 7th switching tube Q7；The second end R42 of the 4th resistance R4 is respectively with the described 6th
The second end Q62 of switching tube Q6 is connected with the first end Q71 of the 7th switching tube Q7, the first end of the 6th switching tube Q6
Q61 is also connect with the first end Q41 of the 4th switching tube Q4 in the trigger module 10；Due to keeping module in switching
In, device connects multiple devices simultaneously, such as the 6th switching tube Q6 first end Q61 simultaneously with the 4th switching tube Q4 the
The second end Q72 connection of one end Q41, the second end R32 of 3rd resistor R3 and the 7th switching tube Q7, in order to which clearer explanation is each
The connection relationship of a device, Fig. 5~switching shown in Fig. 7 keep identifying the conducting section of the first conducting node T1 and second in module
Point T2, therefore the second end R32 of the 3rd resistor R3 is connect with the first conducting node T1；The second end of the 4th resistance R4
R42 is connect with the second conducting node T2；The first end Q61 of the 6th switching tube Q6 is connect with the first conducting node T1,
The second end Q62 of the 6th switching tube Q6 is connect with the second conducting node T2, the second end of the 6th switching tube Q6
Q62 also passes through the second capacitor C2 ground connection；The first end Q71 of the 7th switching tube Q7 is connect with the second conducting node T2,
The second end Q72 of the 7th switching tube Q7 is grounded by first capacitor C1, the second end Q72 of the 7th switching tube Q7 also with
The first conducting node T1 connection；It is described first conducting node T1 also with the 4th switching tube Q4 in the trigger module
First end Q41 connection；
In the starting module, the second end Q32 of the third switching tube Q3 and the switching keep the institute in module
The first end Q71 connection of the 7th switching tube Q7 is stated, the first end Q31 of the third switching tube Q3 connects with the system power supply respectively
The second end Q82 connection of the second end Q22 and the 8th switching tube Q8 of mouth S2, second switch Q2；The second switch Q2's
The third end Q23 of first end Q21 or the second switch Q2 are connect with the first chip 100；The of the 8th switching tube Q8
One end Q81 is connect with the second end Q52 of system power supply interface S2 and the 5th switching tube Q5 respectively；The of the 5th switching tube Q5
The third end Q53 of 5th switching tube Q5 of one end Q51 or described is connect with the second chip 200；Due in starting module, a device
Part connects multiple devices simultaneously, and for the connection relationship of the clearer each device of explanation, Fig. 5~switching shown in Fig. 7 is kept
Third conducting node T3 is identified in module, therefore the second end Q32 of the third switching tube Q3 and the switching are kept in module
Second conducting node T2 connection；Node T3 and the system is connected by third in the first end Q31 of the third switching tube Q3
Power interface S2 connection；Third conducting node T3 also respectively with the second end Q22 of second switch Q2 and the 8th switching tube
The second end Q82 connection of Q8；The third end Q23 of the first end Q21 of the second switch Q2 or the second switch Q2 with
The connection of first chip 100；The first end Q81 of the 8th switching tube Q8 respectively with system power supply interface S2 and the 5th switching tube Q5
Second end Q52 connection；The third end Q53 of the 5th switching tube Q5 of first end Q51 or described of the 5th switching tube Q5 and
The connection of two chips 200.
Wherein, the third end Q13 of the first switch tube Q1, the third end Q63 of the 6th switching tube Q6, the described 7th
The third end Q83 of the third end Q33 and the 8th switching tube Q8 of the third end Q73 of switching tube Q7, the third switching tube Q3 connect
Ground；The resistance value of the 3rd resistor R3 is less than the resistance value of the 4th resistance R4.
Specifically, any one switching tube can be opened in the first switch tube into the 8th switching tube for simulation
Guan Guan, digital electronic switch pipe and other can realize switch chip of the on or off of circuit etc., and Fig. 2~shown in Fig. 4
It is exemplary using any one switching tube as N-channel MOS type field-effect tube or NPN type triode progress in circuit；It is opened when described
When Guan Guanwei N-channel MOS type field-effect tube, the first end of the switching tube is drain electrode, and the second end of the switching tube is grid,
The third end of the switching tube is source electrode；When the switching tube is NPN type triode, the first end of the switching tube is current collection
Pole, the second end of the switching tube are base stage, and the third end of the switching tube is emitter；And above-mentioned backup power source persistently supplies
Electricity；It will be appreciated by those skilled in the art that, above-mentioned switching tube be analog switch pipe, digital electronic switch pipe and other can realize
When the switch chip of the on or off of circuit, Fig. 2~each device shown in Fig. 4 connection relationship need to make adaptability tune
It is whole, and connection relationship adjusted is also that those skilled in the art would know that and achievable.
Further, since chip normal work needs access chip working power and enable signal (or chip selection signal),
Wherein chip operation power supply can be the working power of aforementioned system power interface S2 access, can also be by the power supply that is additionally arranged
Circuit provides；The chip operation power supply can be when being connected with the switching tube that chip connects and enable signal one needed for chip
Rise and chip accessed to by the switching tube or the chip operation power supply can keep continued power, but chip whether start then by
Whether switching tube imports enable signal to control.
Flexibly, when the enable signal that the first chip or the second chip use is effective for low level, foregoing circuit may be used also
The effect of the effective enable signal of low level, in this way enable signal needed for the first chip of starting are realized in a manner of using ground connection
It is provided by the ground terminal of second switch Q2, and enable signal needed for starting the second chip is by the ground terminal of the 5th switching tube Q5
It provides, then can simplify circuit；From the foregoing, it will be observed that when first chip is connect with chip operation power supply, the second switch
The first end Q21 of Q2 is connect with the working interface J1 of the first chip, and the third end Q23 of the second switch Q2 makes for accessing
It can signal or ground connection；
When second chip is connect with the chip operation power supply, the first end Q51 of the 5th switching tube Q5 with
The working interface J2 connection of second chip 200, the third end Q53 of the 5th switching tube Q5 is for accessing enable signal or connecing
Ground；For example, in the structure chart of circuit shown in fig. 5, the third end Q23 of second switch Q2 is used to access enable signal,
The third end Q53 of 5th switching tube Q5 is for accessing enable signal, and second switch Q2 in the structure chart of circuit shown in fig. 6
Third end Q23 for being grounded, the third end Q53 of the 5th switching tube Q5 is for being grounded；Certainly in practical applications, second switch
, can be with the third end ground connection of a switching tube in the third end Q53 of the third end Q23 and the 5th switching tube Q5 of pipe Q2, another
The third of switching tube is terminated into enable signal.
By taking circuit shown in fig. 5 as an example, to the circuit of the selection BIOS chip in the embodiment of the present invention
The course of work be illustrated, circuit is located in computer equipment, be provided with physical button on the shell of the computer equipment,
The physical button, which is specifically as follows, restarts key, which connect with the circuit reset key Z1；The trigger signal by
The circuit reset end in down state provides；The physical button control the circuit reset key be in down state or
Bounce state；At the first moment, user does not press starting key, and does not also press and restart key, i.e., circuit reset key Z1 is in
State is bounced, then circuit reset key Z1 is not contacted with the third end Q43 of the 4th switching tube Q4, then the of the 4th switching tube Q4 at this time
Three end Q43 are in high potential, since the second end Q42 and the first backup power source S1 (usually+3.3V) of the 4th switching tube Q4 connect
It connects, then it is poor without forward voltage between the third end Q43 of the second end Q42 and the 4th switching tube Q4 of the 4th switching tube Q4, then the 4th
Switching tube Q4 is not turned on；
Switching is kept in module 20 at this time, since the second backup battery S3 persistently provides forward voltage (usually 5V), then
So that the 6th switching tube Q6 is held off and the 7th switching tube Q7 is tended to remain on, specifically, second backup electricity
When source S3 initially powers, since the resistance value of 3rd resistor R3 is much smaller than the resistance value of the 4th resistance R4, usual R3 takes the Europe 10K
Nurse, R4 takes 100K ohm, and first capacitor C1 and the second capacitor C2 is 0.1uF, then the third end Q73 (grid of the 7th switching tube Q7
Pole) at voltage rise time it is shorter than third end Q63 (grid) voltage rising time of the 6th switching tube Q6, then the 7th switching tube
Q7 can be connected prior to the 6th switching tube Q6, after the 7th switching tube Q7 conducting, just by the voltage at the grid of the 6th switching tube Q6
It drags down, turns off the 6th switching tube Q6, that is to say, that then in backup power source S3 continued power and user does not press circuit reset
In the case where key Z1, the 6th switching tube Q6 is always maintained at off state, and the 7th switching tube Q7 is tended to remain on；In addition, by
It is connected in the 7th switching tube Q7, then the second firing point T2 is in low potential；
And in starting module 30, since user is not keyed up, then working power is not accessed at system power supply interface S2 yet, then
Each device does not also work in starting module 30；
If the second moment after aforementioned first moment, user press starting key, then connect at system power supply interface S2
Enter working power, i.e., in trigger module, the system power supply interface S2 power supply being connect with the second end Q12 of first switch tube Q1,
Then first switch tube Q1 is connected, first switch tube Q11 and the Q13 equipotentiality of the conducting, due to the third end Q13 of first switch tube Q1
Ground connection, then the first end Q11 of first switch tube Q1 is in low potential, therefore causes the second end Q42 of the 4th switching tube Q4 to be also
Low potential, then the 4th switching tube Q4 is not turned on；Therefore after the second moment, i.e., after user presses starting key, if user presses
Under restart key, so that circuit reset key Z1 is in down state, provide trigger signal, but at this time due to the first switch of conducting
Pipe Q1 is equipotentiality body, causes the 4th switching tube Q4 to be not turned on, then trigger signal is truncated at Q4, i.e., restarts key at this time and be only used for
The other functions such as restart, not can be carried out chip switching；
Switching keep module 20 in, since the 4th switching tube Q4 is not turned on, then switch keep module 20 continue keep with
The state consistency at the first moment；
In starting module 30, due to the 6th switching tube Q6 cut-off at this time, the 7th switching tube Q7 is connected, the 7th switching tube
The first end Q71 and third end Q73 equipotentiality of Q7, i.e. the first end Q71 of the 7th switching tube Q7 are in low potential, thus the second conducting
Point T2 is also low potential；No-voltage is poor between the second end Q32 of third switching tube Q3 and third end Q33 at this time, then third switchs
Pipe Q3 is also not turned on；Since the second end Q82 of the second end Q22 and the 8th switching tube Q8 of second switch Q2 are connected with third
Point T3 connection then provides operating voltage and is transmitted to the of second switch Q2 by third firing point T3 at system power supply interface S2
Second switch Q2 and the 8th switching tube Q8 is connected in the second end Q82 of two end Q22 and the 8th switching tube Q8；It opens due to the 8th
Pipe Q8 conducting is closed, then the first end Q81 of the 8th switching tube Q8 and third end Q83 equipotentiality, so that the third with the 8th switching tube Q8
The second end Q52 of the 5th switching tube Q5 of Q83 connection is held to be equivalent to ground connection, i.e., the 5th switching tube is not turned on, therefore enable signal
It can only be oriented to the working interface J1 of the first chip by the second switch Q2 of conducting, i.e., provided at system power supply interface S2 at this time
Operating voltage is for normally starting the first chip；
But when the first chip goes wrong or needs using the second chip operation, then user press power button it
Before, user needs that circuit reset key Z1 is made to be in down state, and the trigger signal of chip, tool are provided for handing off to triggering interface
Body process is as follows:
If at the third moment after aforementioned first moment, user does not press power knob at this time, but press restart by
Key makes circuit reset key Z1 be in down state, then provides trigger signal, which is specially low level, and the 4th opens
Close pipe Q4 the Q43 connection of third end triggering interface 40 by low level signal guiding the 4th switching tube Q4 third end Q43, i.e., this
When third end Q43 be in low potential, and the system power supply interface S2 connecting at this time with the second end Q12 of first switch tube Q1 does not connect
Enter working power, and the second end Q42 of the 4th switching tube Q4 is connect with the first backup power source S1, which continues
It provides forward voltage (usually 3.3V), then the 4th switching tube Q4 is connected, thus the first end Q41 and third of the 4th switching tube Q4
Q43 equipotentiality is held, i.e., is sent to low level signal at the first conducting node T1 in switching holding module 20 and the 7th switching tube
The second end Q72 of Q7, the second end Q72 of the 7th switching tube Q7 is in low potential at this time, so that the 7th switching tube Q7 is turned off, and makes
Second firing point T2 is in high potential, then so that the second end Q62 of the 6th switching tube Q6 is also at high potential, then the 6th switching tube Q6
Conducting, the third end Q63 equipotentiality of the first end Q61 and the 6th switching tube Q6 of the 6th switching tube Q6, are equivalent to the 6th switch at this time
The first end Q61 of pipe Q6 is is grounded, and the first end Q61 of the second end Q72 and the 6th switching tube Q6 due to the 7th switching tube Q7
Connection, so that the 7th switching tube Q7 is persistently held off, and then tends to remain on Q6 persistently；
It is held off by the 7th switching tube Q7, and Q6 is tended to remain on, the second firing point T2 switchs third
The second end Q32 of pipe Q3 is in high potential, then third switching tube Q3 is connected, at this time the first end Q31 of third switching tube Q3 and the
The third end Q33 equipotentiality of three switching tube Q3 locates the third firing point T3 connecting with the first end Q31 of third switching tube Q3 also
In low potential, and since section is connected in the second end Q82 of the second end Q22 and the 8th switching tube Q8 of second switch Q2 with third
Point T3 connection, so that second switch Q2 and the 8th switching tube Q8 are held off, that is to say, that since switching keeps module
The trigger signal of trigger module transmission is received, so that the 7th switching tube Q7 is held off, and Q6 is tended to remain on, from
And the second firing point T2 makes the second end Q32 of third switching tube Q3 be in high potential, and then realizes second switch Q2 and the 8th
Switching tube Q8 is held off, and is equivalent to chip to be launched being switched to the second chip by the first chip, therefore in third
The 4th moment after moment, user press power knob, due to making second switch Q2 be off state at the third moment,
Therefore after system power supply interface S2 access working power, which the 5th switching tube Q5 is connected, so that enable signal is led
Enter the working interface J2 of the second chip to the first end Q51 connection of the 5th switching tube Q5, to start the second chip 200；
Usually in the first 100 failure of chip, user, which first presses, restarts key and presses starting key again, starts the second core
After piece, machine equipment to be calculated is completed after running and shutting down, when user necessarily wishes to be again started up computer equipment, still at starting
In the second chip 200 of normal condition, since the 6th switching tube Q6 being connected at the aforementioned third moment, then with the 6th switching tube Q6
The first conducting node of first end Q61 connection be constantly in low potential, so that the 7th switching tube Q7 be made to be held off, therefore
Second switch Q2 and the 8th switching tube Q8 are also held off, then when user is again started up computer equipment, i.e., system is electric
After source interface S2 accesses working power, which is still and then to start second for the 5th switching tube Q5 to be connected
Chip 200.
In practical applications, the either working interface of the working interface of the first chip or the second chip, is on chip
Pin, and said chip working power and enable signal can be accessed by the same pin of chip, can also be by different pipes
Foot access, for example, chip operation power supply is accessed by a pin in Fig. 5 and Fig. 6, and enable signal be by chip another
Pin (i.e. working interface) access；And in Fig. 7, chip operation power supply and enable signal (are worked and are connect by the same pin
Mouthful) access；It should be noted that above-mentioned enable signal is specially high level or low level, the present embodiment for ease of description, will
High level or low level for bootrom are known as enable signal, but in practical applications, the work of first chip 100
Interface J1 is chip selection signal input pin or enable signal input pin, when working interface J1 is chip selection signal input pin (CS
Pin) when, high level or low level by chip selection signal input pin access for start the first chip then referred to as this
The chip selection signal of one chip；When working interface J1 is enabled input pin (CE pin), input pin access is enabled by this
High level or low level for starting the first chip are then known as the enable signal of first chip；Similar, second core
The working interface J2 of piece 200 is chip selection signal input pin or enabled input pin.
In the present embodiment, the physical button being arranged on the computer equipment shell where circuit reset key and aforementioned circuit connects
It connects, and physical button control circuit reset key is in down state or bounces state, therefore by pressing physical button, it can count
Switch chip to be launched before calculating machine equipment booting, the cabinet for being not required to dismantle computer equipment goes to switch chip to be launched, give
User brings conveniently.
But in actual production manufacture, there are a parasitic diodes in switching tube, specifically, Fig. 8 is that the present invention is a kind of
Realize the 4th structural schematic diagram in the circuit embodiments three of different chip chamber switchings.With reference to Fig. 8, Fig. 8 be Fig. 7 in practical applications
Circuit structure, the third end of each switching tube connect with the anode of a parasitic diode (not shown), and first end with post
The cathode connection of raw diode, then it is contemplated that, when circuit reset key is not pressed, the third end of the 4th switching tube is high electricity
Position, but since the 4th switching tube turns off, then the high potential at the third end of the 4th switching tube will not be oriented to the first conducting node
Place, but due in the 4th switching tube there are parasitic diode, the first conducting node T1 passes through the one or two pole in practical application
Pipe D1 is connect with the first end Q41 of the 4th switching tube Q4 in the trigger module, wherein the first conducting node T1
It is connected to the anode of the first diode D1, the cathode of the first diode D1 and the first end of the 4th switching tube Q4
Q41 connection；At this point, even if high potential has passed through the parasitic diode in the 4th switching tube Q4, but can be first diode D1's
Ended at cathode, then will not influence the state of the 6th switching tube and the 7th switching tube Q7 at current time；
Similar with the effect of first diode D1, the second end Q32 of the third switching tube Q3 passes through the second diode D2
The second conducting node T2 in module is kept to connect with the switching；The wherein cathode of the second diode D2 and the third
The second end Q32 connection of switching tube Q3, the anode of the second diode D2 are connect with the second conducting node T2.
Likewise, the first conducting node T1 passes through the 4th switching tube in first diode D1 and the trigger module
The first end Q41 connection of Q4, wherein the first conducting node T1 is connected to the anode of the first diode D1, described first
The cathode of diode D1 is connect with the first end Q41 of the 4th switching tube Q4；The second end Q32 of the third switching tube Q3 is logical
Cross the second diode D2 keeps the second conducting node T2 in module to connect with the switching；Wherein the second diode D2
Cathode is connect with the second end Q32 of the third switching tube Q3, and the anode of the second diode D2 and second conducting save
Point T2 connection.
It, i.e., can also be with when not parasitic diode then it is appreciated that when above-mentioned each switching tube is perfect switch pipe
It is described when making the third end Q23 of the second switch Q2 for accessing the enable signal, and being connect with chip operation power supply
The first end Q21 of second switch Q2 is connect with the working interface J1 of the first chip 100；Similar, make the 5th switching tube Q5's
Third end Q53 is for accessing the enable signal, and when being connect with chip operation power supply, the first end of the 5th switching tube
Q51 is connect with the working interface J2 of the second chip, but in practical applications, it is contemplated that there are parasitic diode in switch, in order to
After preventing user from selecting the second chip of starting, even if after second switch Q2 shutdown, but chip operation power supply makes second switch
Diode conducting in Q2, makes the enable signal at the third end Q23 of second switch Q2 import first with chip operation power supply
Chip；Or to prevent user from selecting the first chip of starting after, even if after the shutdown of the 5th switching tube, but chip operation power supply makes the
Diode conducting in five switching tubes, makes the enable signal at the third end of the 5th switching tube import the second core with chip operation power supply
Piece, therefore in practical applications, when the first end Q21 of the second switch Q2 is for accessing the enable signal, and and core
When piece working power connects, the third end Q23 of the second switch Q2 is connect with the working interface J1 of the first chip；
When the first end Q51 of the 5th switching tube Q5 connects for accessing the enable signal, and with chip operation power supply
When connecing, the third end Q53 of the 5th switching tube Q5 is connect with the working interface J2 of the 2nd BIOS chip.
It should be added that being supplied when no matter using any one structure shown in Fig. 5 to Fig. 8 in each working power
When electric, it is also necessary to which resistance does current limliting etc., specifically, the first backup power source S1 is connected to the described 4th by the 7th resistance R7
The second end Q42 of switching tube Q4；
The second end Q12 of the first switch tube Q1 is connect by second resistance R2 with the system power supply interface S2.
The circuit further includes the 6th resistance R6, and one end of the 6th resistance R6 is connected to the second diode D2's
Between cathode and the second end Q32 of the third switching tube Q3, the other end and the third switching tube of the 6th resistance R6
The third end Q33 connection of Q3, and the resistance value of the 6th resistance R6 is much smaller than the resistance value of the 4th resistance R4；
Node T3 connection is connected with the third by first resistor R1 by the system power supply interface S2；
The system power supply interface S2 is connect by the 5th resistance R5 with the first end Q81 of the 8th switching tube Q8；
It is similar, the chip operation power supply third with the third end Q23 of second switch Q2 and the 5th switching tube Q5 respectively
When holding Q53 connection, particular by the connection of voltage regulation resistance (not shown)；Or chip operation power supply respectively with the first chip
Working interface J1 when being connected with the working interface J2 of second chip, and pass through what voltage regulation resistance connected.
Supplementary explanation is also needed, above-mentioned first chip and the second chip can be basic input-output system BIOS chip.
To sum up, in the present embodiment, when switching chip to be launched, it is only necessary to before accessing working power to circuit, make
Circuit reset key provides trigger signal, can switch over chip to be launched, will start after then accessing working power
Chip after switching；Compared with prior art, the present embodiment is not required to be equipped with additional selection when realizing the switching of different chip chambers
Device reduces the complexity of the circuit for realizing chip chamber switching, so that the circuit of realization chip chamber switching can be applied
Range it is wider, convenient for promoting various production efficiency of equipment for being configured with multi-chip.
Optionally, the embodiment of the invention also provides a kind of computer equipments, including shown in aforementioned any embodiment in fact
The circuit of existing different chip chamber switchings, correspondingly, the circuit reset key in the circuit of the different chip chamber switchings of the realization can be with meter
The physical button connection being arranged on machine equipment shell is calculated, is in by the physical button control circuit reset key and bounces or press shape
State, then by pressing physical button, can before computer equipment is switched on switching chip to be launched, be not required to dismantle computer and set
Standby cabinet goes to switch chip to be launched, brings conveniently to user.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (17)
1. a kind of circuit for realizing different chip chamber switchings, which is characterized in that the circuit includes circuit reset key, trigger mode
Block, switching keep module, starting module, the first chip and the second chip；The trigger module and the switching keep module to connect
It connects；The switching keeps module to connect with the starting module；The starting module and first chip and the second chip connect
It connects；
The trigger module is used to keep module to send trigger signal to the switching；In the trigger module, include at least
For accessing the triggering interface of the trigger signal；The trigger signal by with the circuit that is of coupled connections of triggering interface
Reset key provides；Wherein, before the circuit accesses working power, the circuit reset key provides the trigger signal；Institute
Stating switching keeps module to be used to control the starting module for chip to be launched by first core according to the trigger signal
Piece is switched to second chip.
2. circuit according to claim 1, which is characterized in that be switched to by the first chip in the chip to be launched
Before two chips, the switching keeps module to be also used to control the starting module and chip to be launched is persistently set to described the
One chip, and controlling the starting module after the chip to be launched is switched to the second chip by the first chip will be wait open
Dynamic chip is persistently set to second chip.
3. circuit according to claim 1, which is characterized in that the circuit further includes for accessing the working power
System power supply interface；
The trigger module further includes first switch tube, the 4th switching tube and the first backup power source；
The triggering interface is connect with the 4th switching tube；4th switching tube also respectively with first backup power source and
The first switch tube connection；The first switch tube is also connect with the system power supply interface.
4. circuit according to claim 3, which is characterized in that
It includes the 6th switching tube, the 7th switching tube, 3rd resistor, the 4th resistance and the second backup electricity that the switching, which keeps module,
Source；
6th switching tube is connect with the trigger module and the 7th switching tube respectively；6th switching tube is also with
The connection of three resistance；7th switching tube is also connect with the 4th resistance；The 3rd resistor and the 4th resistance are also with the
The connection of two backup batteries；The resistance value of the 3rd resistor is less than the resistance value of the 4th resistance.
5. circuit according to claim 4, which is characterized in that the starting module further includes third switching tube, second opens
Guan Guan, the 5th switching tube and the 8th switching tube,
The third switching tube and the switching keep module to connect, the third switching tube also respectively with second switch, the
Eight switching tubes are connected with the system power supply interface for accessing the working power；The second switch and the first chip connect
It connects；8th switching tube is also connect with system power supply interface and the 5th switching tube respectively；5th switching tube and the second core
Piece connection.
6. circuit according to claim 3, which is characterized in that the trigger signal is low level；In the trigger module
In, the triggering interface is connect with the third end of the 4th switching tube；The second end of 4th switching tube is spare with first respectively
Power supply is connected with the first end of first switch tube；The second end of the first switch tube connects the system power supply interface.
7. circuit according to claim 4, which is characterized in that kept in module in the switching, the second backup electricity
Source is connect with the first end of the first end of 3rd resistor and the 4th resistance respectively；The second end of the 3rd resistor respectively with it is described
The first end of 6th switching tube is connected with the second end of the 7th switching tube；The second end of 4th resistance respectively with it is described
The second end of 6th switching tube is connected with the first end of the 7th switching tube, the first end of the 6th switching tube also with it is described
The first end of the 4th switching tube in trigger module connects；The second end of 6th switching tube also passes through the second capacitor and connects
Ground；The second end of 7th switching tube is grounded by first capacitor.
8. circuit according to claim 5, which is characterized in that in the starting module, the of the third switching tube
Two ends keep the first end of the 7th switching tube in module to connect with the switching, the first end point of the third switching tube
It is not connect with the second end of the system power supply interface, the second end of second switch and the 8th switching tube；The second switch
The third end of the first end of pipe or the second switch is connect with the first chip；The first end of 8th switching tube respectively with
The connection of the second end of system power supply interface and the 5th switching tube；The first end of 5th switching tube or the 5th switching tube
Third end is connect with the second chip；Wherein, the third end of the first switch tube, the 6th switching tube third end, described
The third end at the third end of the 7th switching tube, the third end of the third switching tube and the 8th switching tube is grounded.
9. circuit according to claim 8, which is characterized in that when first chip is connect with chip operation power supply,
The first end of the second switch is connect with the working interface of the first chip, and the third end of the second switch is for accessing
Enable signal or ground connection；
When second chip is connect with the chip operation power supply, first end and the second chip of the 5th switching tube
Working interface connection, the third end of the 5th switching tube is for accessing enable signal or ground connection.
10. circuit according to claim 8, which is characterized in that when the first end and chip operation of the second switch
When power supply connects, the third end of the second switch is connect with the working interface of the first chip；The signal of first chip
Interface is for accessing enable signal or ground connection；
When the first end of the 5th switching tube is connect with chip operation power supply, the third end and second of the 5th switching tube
The working interface of chip connects；The signaling interface of second chip is also used to access enable signal or ground connection.
11. circuit according to claim 5, which is characterized in that the first end of the 6th switching tube passes through the one or two pole
Pipe is connect with the first end of the 4th switching tube, wherein the first end of the 6th switching tube is connected to the first diode
Anode, the cathode of the first diode connect with the first end of the 4th switching tube；
The second end of the third switching tube keeps the 7th switching tube in module by the second diode and the switching
First end connection；Wherein the cathode of second diode is connect with the second end of the third switching tube, and the described 2nd 2
The anode of pole pipe is connect with the first end of the 7th switching tube.
12. circuit according to claim 11, which is characterized in that first backup power source is connected to by the 7th resistance
The second end of 4th switching tube；
The second end of the first switch tube is connect by second resistance with the system power supply interface；
The circuit further includes the 6th resistance, one end of the 6th resistance be connected to the cathode of second diode with it is described
Between the second end of third switching tube, the other end of the 6th resistance is connect with the third end of the third switching tube；
First resistor has been also connected between the system power supply interface and the first end of the third switching tube；
It is connect by the 5th resistance with the first end of the 8th switching tube in the system power supply interface.
13. circuit according to claim 8, which is characterized in that in the first switch tube into the 8th switching tube,
Any one switching tube is N-channel MOS type field-effect tube or NPN type triode；
When the switching tube is N-channel MOS type field-effect tube, the first end of the switching tube is drain electrode, the switching tube
Second end is grid, and the third end of the switching tube is source electrode；
When the switching tube is NPN type triode, the first end of the switching tube is collector, the second end of the switching tube
For base stage, the third end of the switching tube is emitter.
14. described in any item circuits according to claim 1~13, which is characterized in that the chip is basic input and output system
System BIOS chip.
15. described in any item circuits according to claim 1~13, which is characterized in that the circuit is located in computer equipment,
Physical button is provided on the shell of the computer equipment, the physical button and the circuit reset are keyed；The touching
It signals to be provided by the circuit reset key in down state；The physical button control circuit reset key, which is in, to be pressed
Lower state bounces state.
16. described in any item circuits according to claim 1~13, which is characterized in that the working interface of first chip is
Chip selection signal input pin or enable signal input pin；The working interface of second chip be chip selection signal input pin or
Enable signal input pin.
17. a kind of computer equipment, which is characterized in that including the described in any item circuits of claim 1~15.
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| CN201510025996.6A CN105867568B (en) | 2015-01-19 | 2015-01-19 | A kind of circuit and computer equipment for realizing different chip chamber switchings |
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| CN201510025996.6A CN105867568B (en) | 2015-01-19 | 2015-01-19 | A kind of circuit and computer equipment for realizing different chip chamber switchings |
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| CN108132703A (en) * | 2017-12-07 | 2018-06-08 | 苏州大学 | A kind of multifunction push key circuit and its implementation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159889Y (en) * | 2008-03-13 | 2008-12-03 | 泰辉电子(深圳)有限公司 | Switch type multi-BIOS selection circuit |
| CN102591728A (en) * | 2011-01-11 | 2012-07-18 | 研祥智能科技股份有限公司 | Method for starting up computer and basic input output system (BIOS) automatic restoring circuit |
| CN102750206A (en) * | 2012-05-10 | 2012-10-24 | 加弘科技咨询(上海)有限公司 | Multiple-basic input/ output system (BIOS) circuit and multiple-BIOS switching method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI284284B (en) * | 2005-08-08 | 2007-07-21 | Inventec Corp | Selective apparatus for main/backup basic input/output system (BIOS) |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159889Y (en) * | 2008-03-13 | 2008-12-03 | 泰辉电子(深圳)有限公司 | Switch type multi-BIOS selection circuit |
| CN102591728A (en) * | 2011-01-11 | 2012-07-18 | 研祥智能科技股份有限公司 | Method for starting up computer and basic input output system (BIOS) automatic restoring circuit |
| CN102750206A (en) * | 2012-05-10 | 2012-10-24 | 加弘科技咨询(上海)有限公司 | Multiple-basic input/ output system (BIOS) circuit and multiple-BIOS switching method |
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Effective date of registration: 20200417 Address after: 510663 Room 401, building 2, No. 18, Shenzhou Road, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Longxin Zhongke Electronic Technology Co., Ltd Address before: 100095, Beijing, Zhongguancun Haidian District environmental science and technology demonstration park, Liuzhou Industrial Park, No. 2 building Patentee before: LOONGSON TECHNOLOGY CORPORATION Ltd. |