CN205427710U - Start circuit, motherboard and computer of motherboard - Google Patents
Start circuit, motherboard and computer of motherboard Download PDFInfo
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- CN205427710U CN205427710U CN201620148714.1U CN201620148714U CN205427710U CN 205427710 U CN205427710 U CN 205427710U CN 201620148714 U CN201620148714 U CN 201620148714U CN 205427710 U CN205427710 U CN 205427710U
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Abstract
The utility model provides a start circuit, motherboard and computer of motherboard, when being in first state through the switch module, second start circuit and the disconnection of control chip electricity, the first start circuit of being connected with the control chip electricity provides the start mode that the button was started shooting, the switch module is when the second state, and second start circuit is connected with the control chip electricity, and first start circuit and the second start circuit be connected with the control chip electricity provide the quick -witted start mode of establishing by cable, make the user to select the start mode through setting up state that the switch module located, with the computer in the back of dispatching from the factory, its start mode is fixed, and establish the machine by cable on for or the button start is compared, the start mode is more nimble.
Description
Technical Field
The utility model relates to a computer technology especially relates to a start circuit of mainboard, mainboard and computer.
Background
At present, computers are increasingly widely applied; for example, the computer can be applied to the field of industrial control, the field of network security, and the like.
In the prior art, the computer is powered on or turned on by pressing a button. Wherein, for power-on startup: when the mainboard is powered on, the power supply circuit of the mainboard provides a main power supply for the mainboard, and the computer is started. For the key starting, when the mainboard is powered on and a user presses a starting key arranged on the computer, the power supply circuit provides a main power supply for the mainboard, and the computer is started. In the prior art, after a certain computer leaves a factory, the starting mode of the computer is fixed as power-on starting or key starting.
Therefore, the prior art has the problem that the starting mode is not flexible enough.
SUMMERY OF THE UTILITY MODEL
The utility model provides a start circuit, mainboard and computer of mainboard for the problem that the start mode is not nimble enough among the solution prior art.
The utility model provides a starting circuit of a mainboard, wherein the mainboard comprises the starting circuit, a control chip and a first power supply circuit; the control chip is electrically connected with the starting circuit and the first power supply circuit respectively; the control chip is used for controlling the first power supply circuit according to the output of the starting circuit; the first power supply circuit is used for providing a main power supply for the mainboard according to the control of the control chip; the boot circuit includes: the starting circuit comprises a first starting circuit, a second starting circuit and a switch module;
The control chip is electrically connected with the first starting-up circuit, the first end of the switch module is electrically connected with the second starting-up circuit, and the second end of the switch module is electrically connected with the control chip;
when the switch module is in a first state, the second starting circuit is electrically disconnected with the control chip, and the first starting circuit electrically connected with the control chip provides a starting mode of starting the key;
when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting.
Optionally, in an embodiment of the present invention, the first power-on circuit includes: a first power-on sub-circuit and a second power-on sub-circuit;
the first starting-up sub-circuit is electrically connected with a first functional pin of the control chip, and the second starting-up sub-circuit and a second end of the switch module are respectively electrically connected with a second functional pin of the control chip;
when the switch module is in a first state, the second starting-up circuit is electrically disconnected from the second functional pin, the first starting-up sub-circuit provides an RSMRST signal to the control chip, and the second starting-up sub-circuit provides a PWRBTN signal to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signal and the PWRBTN signal;
When the switch module is in a second state, the second starting-up circuit is electrically connected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals to the control chip, and the second starting-up sub-circuit and the second starting-up circuit provide PWRBTN signals to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signals and the PWRBTN signals.
Optionally, in an embodiment of the present invention, the first power sub-circuit includes: a first resistor and a first capacitor; wherein,
the first end of the first capacitor is electrically connected with the first end of the first resistor, and the second end of the first capacitor is grounded; the second end of the first resistor is electrically connected with a standby power supply, and the standby power supply is provided by a second power supply circuit when the mainboard is powered on; the first end of the first capacitor is electrically connected with the first functional pin;
the second power-on sub-circuit comprises: the key, the second resistor and the second capacitor; wherein,
the first end of the second capacitor is electrically connected with the first end of the second resistor and the first end of the key; the second end of the second capacitor is grounded; the second end of the key is grounded; the second end of the second resistor is electrically connected with the standby power supply; the first end of the second capacitor is electrically connected with the second functional pin;
The second power-on circuit includes: a third capacitor; the first end of the third capacitor is electrically connected with the second end of the switch module, and the second end of the third capacitor is grounded.
Optionally, in an embodiment of the present invention, when the second power-on circuit is electrically disconnected from the second functional pin, a time period of charging the first capacitor by the standby power supply is longer than a time period of charging the second capacitor by the standby power supply;
when the second starting-up circuit is electrically connected with the second functional pin, the charging time of the standby power supply to the first capacitor is shorter than the charging time of the standby power supply to the second capacitor and the third capacitor.
The utility model provides a mainboard, include: the starting circuit comprises a control chip, a first power supply circuit and any one of the starting circuits; the control chip is electrically connected with the first power supply circuit and the starting-up circuit respectively; the control chip is used for controlling the first power supply circuit according to the output of the starting circuit; the first power supply circuit is used for providing a main power supply for the mainboard according to the control of the control chip.
Optionally, in an embodiment of the present invention, the control chip is a single chip system SOC or a south bridge chip.
The utility model provides a computer, including above-mentioned arbitrary mainboard.
The utility model provides a starting circuit of a mainboard, the mainboard and a computer; when the switch module is in a first state, the second starting circuit is electrically disconnected with the control chip, and the first starting circuit electrically connected with the control chip provides a starting mode of starting the key; when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting; the user can select the starting mode by setting the state of the switch module, and compared with the mode that the starting mode of the computer is fixed as power-on starting or key starting after the computer leaves a factory, the starting mode is more flexible.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a first embodiment of a power-on circuit of a motherboard according to the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the power-on circuit of the motherboard according to the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the power-on circuit of the motherboard according to the present invention;
fig. 4 is a first schematic diagram illustrating a relationship between a signal of a first functional pin and a signal of a second functional pin according to the present invention;
fig. 5 is a schematic diagram illustrating a relationship between a signal of the first functional pin and a signal of the second functional pin according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a first embodiment of a power-on circuit of a motherboard according to the present invention; as shown in fig. 1, the main board 100 includes a power-on circuit 1, a control chip 2 and a first power supply circuit 3; the control chip 2 is respectively electrically connected with the starting circuit 1 and the first power supply circuit 3; the control chip 2 is used for controlling the first power supply circuit 3 according to the output of the starting circuit 1; a first power supply circuit 3 for supplying a main power to the main board 100 according to the control of the control chip 2; the boot circuit 1 includes: a first power-on circuit 11, a second power-on circuit 12 and a switch module 13; the control chip 2 is electrically connected with the first starting-up circuit 11, the first end of the switch module 13 is electrically connected with the second starting-up circuit 12, and the second end of the switch module 13 is electrically connected with the control chip 2; when the switch module 13 is in the first state, the second startup circuit 12 is electrically disconnected from the control chip 2; the first startup circuit 11 electrically connected with the control chip 2 provides a startup mode of key startup; when the switch module 13 is in the second state, the second starting-up circuit 12 is electrically connected with the control chip 2; the first power-on circuit 11 and the second power-on circuit 12 electrically connected with the control chip 2 provide a power-on mode for power-on and power-on.
Optionally, the power-on module 13 may be, for example, a key switch, a single-pole single-throw switch, a dial switch, or the like.
For example, when the switch module 13 is a single pole single throw switch, the first state may be an open state and the second state may be a closed state.
In this embodiment, when the switch module is in the first state, the second power-on circuit is electrically disconnected from the control chip, and the first power-on circuit electrically connected to the control chip provides a power-on mode for starting up the key; when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting; the user can select the starting mode by setting the state of the switch module, and compared with the mode that the starting mode of the computer is fixed as power-on starting or key starting after the computer leaves a factory, the starting mode is more flexible.
Fig. 2 is a schematic structural diagram of a second embodiment of the power-on circuit of the motherboard according to the present invention; as shown in fig. 2, the structure of the boot circuit of the present embodiment is based on the structure shown in fig. 1, and further, the first boot circuit 11 may include a first boot sub-circuit 111 and a second boot sub-circuit 112. The first starting-up sub-circuit 111 is electrically connected to the first functional pin 21 of the control chip 2, and the second starting-up sub-circuit 112 and the second end of the switch module 13 are electrically connected to the second functional pin 22 of the control chip 2, respectively; when the switch module 13 is in the first state: the second startup circuit 12 is electrically disconnected from the second functional pin 22, the first startup sub-circuit 111 provides an RSMRST signal to the control chip 2, and the second startup sub-circuit 112 provides a PWRBTN signal to the control chip 2, so that the control chip 2 controls the first power supply circuit 3 according to the RSMRST signal and the PWRBTN signal; the first starting-up sub-circuit 111 and the second starting-up sub-circuit 112 electrically connected with the control chip 2 provide a starting-up mode of key starting-up;
When the switch module 13 is in the second state: the second boot circuit 12 is electrically connected to the second functional pin 22, the first boot sub-circuit 111 provides an RSMRST signal to the control chip 2, and the second boot sub-circuit 112 and the second boot circuit 12 provide a PWRBTN signal to the control chip 2, so that the control chip 2 controls the first power supply circuit 3 according to the RSMRST signal and the PWRBTN signal; the first power-on sub-circuit 111, the second power-on sub-circuit 112 and the second power-on circuit 12 electrically connected to the control chip 2 provide a power-on mode for power-on and power-on.
Optionally, the control chip 2 may output a control signal to the first power supply circuit 13 according to the RSMRST signal of the first functional pin 21 and the PWRBTN signal of the second functional pin 22;
accordingly, the first power supply circuit 3 is configured to provide a main power source to the motherboard 100 according to the control signal.
It should be noted that the RSMRST signal is an advanced configuration and power management interface (ACPI) reset signal, and the PWRBTN signal is an ACPI power switching signal.
Optionally, based on the ACPI standard, the manner in which the control chip 2 outputs the control signal to the first power supply circuit 3 according to the RSMRST signal and the PWRBTN signal may be as follows:
1) When the RSMRST signal is at a low level, the control signal output from the control chip 2 is at a low level regardless of whether the PWRBTN signal is at a high level or a low level.
2) When the RSMRST signal is at a high level, if the PWRBTN signal is at a low level, the control signal output from the control chip 2 is at a high level.
Note that the high level and the low level are logic levels.
Optionally, the first power supply circuit 3 provides a main power supply to the motherboard 100 according to the control signal of the control chip 2, and specifically may be:
when the control signal is at a high level, the first power supply circuit 3 provides a main power supply to the main board 100; when the control signal is at a low level, the first power supply circuit 3 does not provide a main power supply to the main board 100.
In this embodiment, the first boot circuit includes a first boot sub-circuit and a second boot sub-circuit; when the switch module is in the first state, the second starting-up circuit is electrically disconnected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals to the control chip, and the second starting-up sub-circuit provides PWRBTN signals to the control chip; when the switch module is in a second state, the second starting-up circuit is electrically connected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals for the control chip, and the second starting-up sub-circuit and the second starting-up circuit provide PWRBTN signals for the control chip; enabling the control chip to control the first power supply circuit according to the RSMRST signal and the PWRBTN signal; the user can select the starting mode by setting the state of the switch module, and the starting mode is more flexible.
Fig. 3 is a schematic structural diagram of a third embodiment of the power-on circuit of the motherboard according to the present invention; as shown in fig. 3, the structure of the boot circuit of the present embodiment is based on the structure shown in fig. 2, and further, the first boot sub-circuit 111 may include: a first resistor R1 and a first capacitor C1; a first end of the first capacitor C1 is electrically connected with a first end of the first resistor R1, and a second end of the first capacitor C1 is grounded GND; a second terminal of the first resistor R1 is electrically connected to a standby power PWR provided by a second power supply circuit (not shown) when the main board 100 is powered on; a first end of the first capacitor C1 is electrically connected with the first functional pin 21;
the second power-on sub-circuit 112 may include: the key BT, the second resistor R2 and the second capacitor C2; a first end of the second capacitor C2 is electrically connected with a first end of the second resistor R2 and a first end of the key BT 1; the second end of the second capacitor C2 is grounded GND; the second end of the button BT1 is grounded GND; a second end of the second resistor R2 is electrically connected with the standby power PWR; a first end of the second capacitor C2 is electrically connected with the second functional pin 22;
the second boot circuit 12 includes: a third capacitance C3; the first end of the third capacitor C3 is electrically connected to the second end of the switch module, and the second end of the third capacitor C3 is grounded GND.
Optionally, based on the manner in which the control chip outputs the control signal to the first power supply circuit 3 according to the RSMRST signal and the PWRBTN signal, a limiting condition may be: when the second power-on circuit 112 is electrically disconnected from the second functional pin 22, the charging duration of the standby power PWR to the first capacitor C1 is longer than the charging duration of the standby power PWR to the second capacitor C2; when the second power-on circuit 112 is electrically connected to the second functional pin 22, the charging time of the standby power PWR to the first capacitor C1 is shorter than the charging time of the standby power PWR to the second capacitor C2 and the third capacitor C3.
Optionally, a method for determining the capacitance values of the first capacitor, the second capacitor, and the third capacitor, and the resistance values of the first resistor and the second resistor may be:
step 1, calculating a time t1 when a standby power supply PWR charges a first capacitor C1 to an input high level (Vih, wherein Vih is the minimum input high level allowed when the input of a logic gate is ensured to be the high level, and when the input level is higher than Vih, the input level is considered to be the high level) through a first resistor R1 by adopting the following formula (1);
t1＝(R1)*(C1)*[lnVCC-ln(VCC-Vih)](1)
where VCC represents the voltage of the standby power supply.
Step 2, calculating the time t2 for the standby power supply PWR to charge the second capacitor to Vih through the second resistor by adopting the following formula (2);
t2＝(R2)*(C2)*[lnVCC-ln(VCC-Vih)](2)
Where VCC represents the voltage of the standby power supply.
Step 3, calculating the time t3 for the standby power supply PWR to charge the second capacitor and the third capacitor to Vih through the second capacitor by adopting the following formula (3);
t3＝(R2)*(C1+C2)*[lnVCC-ln(VCC-Vih)](3)
where VCC represents the voltage of the standby power supply.
And 4, under the condition that t3> t1> t2 is met, determining the capacitance values of the first capacitor, the second capacitor and the third capacitor and the resistance values of the first resistor and the second resistor.
It should be noted that there is no restriction on the order among step 1, step 2 and step 3.
In the following, how to implement key-on and power-on in the present embodiment is specifically described based on the manner in which the control chip outputs the control signal to the first power supply circuit 3 according to the RSMRST signal and the PWRBTN signal:
1. the switch module 13 is in the first state (i.e., the power-on circuit provides a power-on mode for key power-on).
As shown in fig. 3, after the motherboard is powered on, the second power supply circuit (not shown) provides the standby power PWR when the motherboard 100 is powered on; at this time, the standby power PWR charges the first capacitor C1 through the first resistor R1, and the standby power PWR charges the second capacitor C2 through the second resistor R2; the charging time of the first capacitor C1 by the standby power supply PWR is longer than the charging time of the second capacitor C2 by the standby power supply PWR; therefore, the PWRBTN signal becomes high level prior to the RSMRST signal as shown in fig. 4. The control chip 2 outputs a control signal of low level according to the PWRBTN signal and the RSMRST signal; the first power supply circuit does not provide a main power to the main board 100 according to the low-level control signal.
When a key is pressed, the PWRBTN signal is at a low level, and the RSMRST signal is at a high level; the control chip 2 outputs a control signal with high level according to the PWRBTN signal and the RSMRST signal; the first power supply circuit provides a main power to the main board 100 according to the high-level control signal.
2. The switch module 13 is in the second state (i.e., the power-on circuit provides a power-on mode for power-on).
As shown in fig. 3, after the motherboard is powered on, the second power supply circuit provides the standby power PWR when the motherboard 100 is powered on; at this time, the standby power PWR charges the first capacitor C1 through the first resistor R1, and the standby power PWR charges the second capacitor C2 and the third capacitor C3 through the second resistor R2; the charging time of the standby power supply PWR to the first capacitor C1 is shorter than the charging time of the standby power supply PWR to the second capacitor C2 and the third capacitor C3; therefore, the RSMRST signal becomes high level prior to the PWRBTN signal as shown in fig. 5. The control chip 2 outputs a control signal with high level according to the PWRBTN signal and the RSMRST signal; the first power supply circuit provides a main power to the main board 100 according to the low-level control signal.
It should be noted that the present embodiment is only an example of the first power-on sub-circuit, the second power-on sub-circuit, and the second power-on circuit.
In this embodiment, the first power-on sub-circuit, the second power-on sub-circuit and the second power-on circuit are shown in fig. 3; when the switch module is in the first state, the second starting-up circuit is electrically disconnected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals to the control chip, and the second starting-up sub-circuit provides PWRBTN signals to the control chip; when the switch module is in a second state, the second starting-up circuit is electrically connected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals for the control chip, and the second starting-up sub-circuit and the second starting-up circuit provide PWRBTN signals for the control chip; enabling the control chip to control the first power supply circuit according to the RSMRST signal and the PWRBTN signal; the user can select the starting mode by setting the state of the switch module, and the starting mode is more flexible.
The utility model also provides a mainboard, include: the power supply circuit comprises a control chip, a first power supply circuit and a starting circuit; the control chip is electrically connected with the first power supply circuit and the starting-up circuit respectively; the control chip is used for controlling the first power supply circuit according to the output of the starting circuit; the first power supply circuit is used for providing a main power supply for the mainboard according to the control of the control chip; the boot circuit includes: the starting circuit comprises a first starting circuit, a second starting circuit and a switch module; the control chip is electrically connected with the first starting-up circuit, the first end of the switch module is electrically connected with the second starting-up circuit, and the second end of the switch module is electrically connected with the control chip; when the switch module is in a first state, the second starting circuit is electrically disconnected with the control chip, and the first starting circuit electrically connected with the control chip provides a starting mode of starting the key;
When the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting.
Optionally, the first boot circuit includes: a first power-on sub-circuit and a second power-on sub-circuit;
the first starting-up sub-circuit is electrically connected with a first functional pin of the control chip, and the second starting-up sub-circuit and a second end of the switch module are respectively electrically connected with a second functional pin of the control chip;
when the switch module is in a first state, the second starting-up circuit is electrically disconnected from the second functional pin, the first starting-up sub-circuit provides an RSMRST signal to the control chip, and the second starting-up sub-circuit provides a PWRBTN signal to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signal and the PWRBTN signal;
when the switch module is in a second state, the second starting-up circuit is electrically connected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals to the control chip, and the second starting-up sub-circuit and the second starting-up circuit provide PWRBTN signals to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signals and the PWRBTN signals.
Optionally, the first power-on sub-circuit includes: a first resistor and a first capacitor; wherein,
the first end of the first capacitor is electrically connected with the first end of the first resistor, and the second end of the first capacitor is grounded; the second end of the first resistor is electrically connected with a standby power supply, and the standby power supply is provided by a second power supply circuit when the mainboard is powered on; the first end of the first capacitor is electrically connected with the first functional pin;
the second power-on sub-circuit comprises: the key, the second resistor and the second capacitor; wherein,
the first end of the second capacitor is electrically connected with the first end of the second resistor and the first end of the key; the second end of the second capacitor is grounded; the second end of the key is grounded; the second end of the second resistor is electrically connected with the standby power supply; the first end of the second capacitor is electrically connected with the second functional pin;
the second power-on circuit includes: a third capacitor; the first end of the third capacitor is electrically connected with the second end of the switch module, and the second end of the third capacitor is grounded.
Optionally, when the second power-on circuit is electrically disconnected from the second functional pin, the charging time of the standby power supply to the first capacitor is longer than the charging time of the standby power supply to the second capacitor;
When the second starting-up circuit is electrically connected with the second functional pin, the charging time of the standby power supply to the first capacitor is shorter than the charging time of the standby power supply to the second capacitor and the third capacitor.
In the motherboard provided by the embodiment, when the switch module is in the first state, the second startup circuit is electrically disconnected from the control chip, and the first startup circuit electrically connected with the control chip provides a startup mode for starting up the key; when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting; the user can select the starting mode by setting the state of the switch module, and compared with the situation that the starting mode of the computer is fixed as power-on starting or key starting after the computer leaves a factory, the starting mode of the computer is more flexible.
The utility model also provides a computer, include: the motherboard according to the above embodiment.
In the computer provided by the embodiment, when the switch module is in the first state, the second startup circuit is electrically disconnected from the control chip, and the first startup circuit electrically connected with the control chip provides a startup mode of starting up the key; when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting; the user can select the starting mode by setting the state of the switch module, and compared with the situation that the starting mode of the computer is fixed as power-on starting or key starting after the computer leaves a factory, the starting mode of the computer is more flexible.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or all the technical features or connecting rods therein may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A starting circuit of a mainboard comprises the starting circuit, a control chip and a first power supply circuit; the control chip is electrically connected with the starting circuit and the first power supply circuit respectively; the control chip is used for controlling the first power supply circuit according to the output of the starting circuit; the first power supply circuit is used for providing a main power supply for the mainboard according to the control of the control chip; wherein the boot circuit comprises: the starting circuit comprises a first starting circuit, a second starting circuit and a switch module;
the control chip is electrically connected with the first starting-up circuit, the first end of the switch module is electrically connected with the second starting-up circuit, and the second end of the switch module is electrically connected with the control chip;
when the switch module is in a first state, the second starting circuit is electrically disconnected with the control chip, and the first starting circuit electrically connected with the control chip provides a starting mode of starting the key;
when the switch module is in a second state, the second starting circuit is electrically connected with the control chip, and the first starting circuit and the second starting circuit which are electrically connected with the control chip provide a starting mode of power-on starting.
2. The power-on circuit of claim 1, wherein the first power-on circuit comprises: a first power-on sub-circuit and a second power-on sub-circuit;
the first starting-up sub-circuit is electrically connected with a first functional pin of the control chip, and the second starting-up sub-circuit and a second end of the switch module are respectively electrically connected with a second functional pin of the control chip;
when the switch module is in a first state, the second starting-up circuit is electrically disconnected from the second functional pin, the first starting-up sub-circuit provides an RSMRST signal to the control chip, and the second starting-up sub-circuit provides a PWRBTN signal to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signal and the PWRBTN signal;
when the switch module is in a second state, the second starting-up circuit is electrically connected with the second functional pin, the first starting-up sub-circuit provides RSMRST signals to the control chip, and the second starting-up sub-circuit and the second starting-up circuit provide PWRBTN signals to the control chip, so that the control chip controls the first power supply circuit according to the RSMRST signals and the PWRBTN signals.
3. The power-on circuit of claim 2, wherein the first power-on sub-circuit comprises: a first resistor and a first capacitor; wherein,
the first end of the first capacitor is electrically connected with the first end of the first resistor, and the second end of the first capacitor is grounded; the second end of the first resistor is electrically connected with a standby power supply, and the standby power supply is provided by a second power supply circuit when the mainboard is powered on; the first end of the first capacitor is electrically connected with the first functional pin;
the second power-on sub-circuit comprises: the key, the second resistor and the second capacitor; wherein,
the first end of the second capacitor is electrically connected with the first end of the second resistor and the first end of the key; the second end of the second capacitor is grounded; the second end of the key is grounded; the second end of the second resistor is electrically connected with the standby power supply; the first end of the second capacitor is electrically connected with the second functional pin;
the second power-on circuit includes: a third capacitor; the first end of the third capacitor is electrically connected with the second end of the switch module, and the second end of the third capacitor is grounded.
4. A power-on circuit as claimed in claim 3, wherein when the second power-on circuit is electrically disconnected from the second functional pin, the charging duration of the standby power supply to the first capacitor is longer than the charging duration of the standby power supply to the second capacitor;
When the second starting-up circuit is electrically connected with the second functional pin, the charging time of the standby power supply to the first capacitor is shorter than the charging time of the standby power supply to the second capacitor and the third capacitor.
5. A motherboard, comprising: a control chip, a first power supply circuit and the power-on circuit of any one of claims 1-4; the control chip is electrically connected with the first power supply circuit and the starting-up circuit respectively; the control chip is used for controlling the first power supply circuit according to the output of the starting circuit; the first power supply circuit is used for providing a main power supply for the mainboard according to the control of the control chip.
6. The motherboard of claim 5 wherein the control chip is a system-on-a-chip (SOC) or a south bridge chip.
7. A computer, comprising: the host board of claim 5 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148714.1U CN205427710U (en) | 2016-02-26 | 2016-02-26 | Start circuit, motherboard and computer of motherboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620148714.1U CN205427710U (en) | 2016-02-26 | 2016-02-26 | Start circuit, motherboard and computer of motherboard |
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| CN205427710U true CN205427710U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620148714.1U Active CN205427710U (en) | 2016-02-26 | 2016-02-26 | Start circuit, motherboard and computer of motherboard |
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| Country | Link |
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| CN (1) | CN205427710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820046A (en) * | 2021-01-27 | 2021-05-18 | 上海商米科技集团股份有限公司 | Cash register with selectable starting mode and starting selection method |
| CN114415811A (en) * | 2022-03-28 | 2022-04-29 | 成都前锋信息技术股份有限公司 | A high-compatibility computer motherboard |
-
2016
- 2016-02-26 CN CN201620148714.1U patent/CN205427710U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820046A (en) * | 2021-01-27 | 2021-05-18 | 上海商米科技集团股份有限公司 | Cash register with selectable starting mode and starting selection method |
| CN114415811A (en) * | 2022-03-28 | 2022-04-29 | 成都前锋信息技术股份有限公司 | A high-compatibility computer motherboard |
| CN114415811B (en) * | 2022-03-28 | 2022-05-31 | 成都前锋信息技术股份有限公司 | A high-compatibility computer motherboard |
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Address after: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee after: Loongson Zhongke Technology Co.,Ltd. Address before: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee before: LOONGSON TECHNOLOGY Corp.,Ltd. |