Power supply circuit of network card based on YT6801 chip on computer mainboard

Abstract

The utility model relates to a power supply circuit of a network card based on a YT6801 chip on a computer mainboard. The power supply circuit of the network card based on the YT6801 chip on the computer mainboard comprises the network card based on the YT6801 chip, an EC and a switch chip, an input pin IN of the switch chip is electrically connected with a 3.3 V standby power supply P3V3SB on a mainboard, an output pin Out of the switch chip is electrically connected with a pin 11, a pin 32 and a pin 23 of the YT6801 chip to supply power, and an enable pin EN of the switch chip is electrically connected with an EC to receive an enable signal ECRGMIIEN from the EC. The power supply circuit of the network card based on the YT6801 chip on the computer mainboard solves the problem that a terminal using the network card based on the YT6801 chip cannot realize network wake-up in a forced shutdown state.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic computers, in particular to a power supply circuit for a network card based on the YT6801 chip on a computer motherboard. Background Art

[0002] The function of Wake-on-LAN (WOL) is to enable a computer that has entered the sleep state or shutdown state to be commanded from the other end of a local area network (mostly Ethernet), so that it can be awakened from the sleep state, restored to the operating state, or switched from the shutdown state to the boot state.

[0003] Generally speaking, the remote wake-up steps of WOL technology are as follows: when the computer is in the shutdown (or sleep) state, the network card and motherboard parts inside the machine still maintain a weak power supply. This weak power supply enables the network card to maintain the lowest operating ability, so that the network card can listen to the online broadcast information from outside the computer, detect and interpret the information content. Once it is found that there is specific information content in the online broadcast, this specific content is called a "Magic Packet", and the content of the data packet will be judged.

[0004] The Magic Packet is sent in a broadcast manner. The broadcast method and scope can be the entire local area network (LAN) or a specific subnet (Subnet). At the same time, the Magic Packet will contain the online address data of a certain (or a group of) computers. Once the network card interprets and judges that the indicated address is the computer where it is located, the network card will notify the motherboard and power supply inside the machine to start the boot (or wake-up) program.

[0005] With the rapid development of current society and the increasing depth of informatization, the demand for using network wake-up technology to realize remote control of computers in the cold state and achieve information intercommunication is increasing. Currently, most network cards support the network wake-up function. As long as there is a network environment, sending a "Magic Packet" to the terminal to be awakened can activate the network card, thereby further achieving the purpose of remote boot. For terminals using the network card chip YT6801, the applicant of this patent found that after sending a "Magic Packet" in the forced shutdown state, the network card chip YT6801 did not send a wake-up signal, so the purpose of network wake-up could not be achieved. Summary of the Invention

[0006] Therefore, the purpose of the utility model is to provide a power supply circuit for a network card based on the YT6801 chip on a computer motherboard to solve the problem that the network card based on the YT6801 chip cannot achieve network wake-up in the forced shutdown state.

[0007] To achieve the above object, the present utility model provides a power supply circuit for a network card based on the YT6801 chip on a computer motherboard, including: a network card based on the YT6801 chip, an EC, and a switching chip; the input pin IN of the switching chip is electrically connected to the 3.3V standby power supply P3V3SB on the motherboard, the output pin Out of the switching chip is electrically connected to pin 11, pin 32, and pin 23 of the YT6801 chip for power supply, and the enable pin EN of the switching chip is electrically connected to the EC to receive the enable signal EC_RGMII_EN from the EC.

[0008] Among them, the switching chip is SY6288C20AAC.

[0009] Among them, the enable pin EN of the switching chip is also grounded via a resistor R410.

[0010] Among them, the resistance value of the resistor R410 is 100 kΩ.

[0011] Among them, the output pin Out of the switching chip is also grounded via a capacitor.

[0012] Among them, the capacitor includes capacitors C2, C3, C4, and C5 connected in parallel.

[0013] Among them, the capacitance values of the capacitors C2, C3, C4, and C5 are 10 μF, 10 μF, 0.1 μF, and 0.1 μF respectively.

[0014] In summary, the power supply circuit for the network card based on the YT6801 chip on the computer motherboard of the present utility model solves the problem that the terminal using the network card based on the YT6801 chip cannot achieve network wake-up in the forced shutdown state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following combines the drawings and details the specific implementation manners of the present utility model, and the technical solutions and other beneficial effects of the present utility model will be obvious. In the drawings,

[0016] Figure 1 is a schematic diagram of the pin signals of the YT6801 chip in a preferred embodiment of the power supply circuit for the network card based on the YT6801 chip on the computer motherboard of the present utility model;

[0017] Figure 2 is the circuit diagram around the switching chip in a preferred embodiment of the power supply circuit for the network card based on the YT6801 chip on the computer motherboard of the present utility model. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] See Figure 1 and Figure 2 , Figure 1Schematic diagram of pin signals of the YT6801 chip in a preferred embodiment of the power supply circuit for the network card based on the YT6801 chip on the computer motherboard of the present utility model. Figure 2 Circuit diagram around the switch chip for this preferred embodiment. Figure 1 It mainly shows the schematic diagram of the pin signals of the YT6801 chip for the network card. Related to the technical solution of the present utility model, the pin 11, pin 32, and pin 23 of the YT6801 chip need to input a 3.3V working power supply. The data manual provided by the manufacturer can be referred to, and the rest will not be elaborated here.

[0019] Combined with Figure 2 It can be known that the power supply circuit for the network card based on the YT6801 chip on the computer motherboard of the present utility model mainly includes: a network card based on the YT6801 chip, an EC, and a switch chip; the input pin IN of the switch chip is electrically connected to the 3.3V standby power supply P3V3SB on the motherboard, the output pin Out of the switch chip is electrically connected to the pin 11, pin 32, and pin 23 of the YT6801 chip for power supply, and the enable pin EN of the switch chip is electrically connected to the EC to receive the enable signal EC_RGMII_EN from the EC. Among them, the EC is a general design on the motherboard and will not be elaborated here.

[0020] In this preferred embodiment, the switch chip is SY6288C20AAC; the enable pin EN of the switch chip is also grounded via the resistor R410, and the resistance value of the resistor R410 is 100 kΩ; the output pin Out of the switch chip is also grounded via a capacitor; in this preferred embodiment, the capacitor includes capacitors C2, C3, C4, and C5 connected in parallel, and the capacitance values of the capacitors C2, C3, C4, and C5 are 10 μF, 10 μF, 0.1 μF, and 0.1 μF respectively.

[0021] In the solution of the present utility model, the switch chip SY6288C20AAC is used in cooperation with the EC to control the 3.3V power supply of the network card based on the YT6801 chip. Through such a simple, stable, and reliable circuit design, the problem that the terminal using the network card based on the YT6801 chip cannot achieve network wake-up in the forced shutdown state is solved. The reason is that when forced to shut down, the EC will briefly pull down the EN signal of the switch chip SY6288C20AAC, turn off the switch chip SY6288C20AAC, and then turn off the 3.3V power supply of the network card; thus avoiding the problem that the YT6801 chip cannot be normally network-waked up after forced shutdown due to the internal code logic problem in the prior art. After adopting the solution of the present utility model, the YT6801 chip can be briefly powered off when shutting down, making the internal logic of the YT6801 chip think that the motherboard enters the G3 state, and then it can be normally network-waked up.

[0022] In summary, the power supply circuit of the network card based on the YT6801 chip on the computer motherboard of the present utility model solves the problem that the terminal using the network card based on the YT6801 chip cannot achieve network wake-up in the forced shutdown state.

[0023] As described above, for those of ordinary skill in the art, various corresponding changes and deformations can be made according to the technical solutions and technical concepts of the present utility model, and all such changes and deformations shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A power supply circuit for a network card based on the YT6801 chip on a computer motherboard, characterized in that, Including: A network card based on the YT6801 chip, an EC, and a switch chip; The input pin IN of the switch chip is electrically connected to the 3.3V standby power supply P3V3SB on the motherboard, the output pin Out of the switch chip is electrically connected to pin 11, pin 32, and pin 23 of the YT6801 chip for power supply, and the enable pin EN of the switch chip is electrically connected to the EC to receive the enable signal EC_RGMII_EN from the EC.

2. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 1, wherein, The switch chip is SY6288C20AAC.

3. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 2, characterized in that The enable pin EN of the switch chip is also grounded via a resistor R410.

4. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 3, characterized in that The resistance value of the resistor R410 is 100 kiloohms.

5. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 2, wherein The output pin Out of the switch chip is also grounded via a capacitor.

6. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 5, characterized in that, The capacitor includes capacitors C2, C3, C4, and C5 connected in parallel.

7. The power supply circuit of the network card based on the YT6801 chip on the computer motherboard according to claim 6, characterized in that, The capacitance values of the capacitors C2, C3, C4, and C5 are 10 microfarads, 10 microfarads, 0.1 microfarad, and 0.1 microfarad respectively.

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