CN215833902U

CN215833902U - CPU starting control circuit

Info

Publication number: CN215833902U
Application number: CN202122408799.6U
Authority: CN
Inventors: 朱兆仁; 滕欣欣
Original assignee: Guangdong Hanwei Information Technology Co ltd
Current assignee: Guangdong Hanwei Information Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-15
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a CPU startup control circuit, which comprises a CPU, a power supply and a CPLD, wherein the CPLD is electrically connected with the power supply, the power supply is electrically connected with the CPU, the CPLD controls the CPU to be turned on/off according to a set startup program, the CPU startup control circuit also comprises a remote communication module electrically connected with the CPU, and the CPU is electrically connected with the CPLD. The CPU is electrically connected with the CPLD and can communicate with the CPLD so as to change a starting program in the CPLD, a manufacturer can remotely send a starting program changing instruction to the remote communication module, and the remote communication module forwards the received starting program updating instruction to the CPU so as to enable the CPU to change the starting program in the CPLD, thereby changing the starting mode of the CPU.

Description

CPU starting control circuit

Technical Field

The utility model relates to the technical field of starting circuits, in particular to a CPU starting control circuit.

Background

The CPLD is a programmable logic device, and can be used for a user to construct a logic function according to needs. Some integrated circuit schemes use a CPLD for power-on timing control while controlling the CPU to turn on/off through the CPLD. The starting mode of the CPU comprises two modes of power-on starting and key starting. A CPU boot control circuit block diagram based on the CPLD is shown in fig. 1, and a technician needs to determine in advance which boot mode the CPU employs, and then program the CPLD so that it can execute the corresponding boot mode. An integrated circuit is designed according to the CPU power-on control circuit shown in fig. 1, so that a circuit board that realizes power-on timing control based on a CPLD and controls the CPU to perform power on/off can be produced, and then the circuit board can be sold to customers. When a customer wants to change the starting mode of the CPU in the using process, the customer needs to send the circuit board back to a manufacturer, the manufacturer detaches the CPLD from the circuit board, programs are burned into the CPLD after reprogramming the CPLD, and then the CPLD is installed back on the circuit board, and the operation is very troublesome.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a CPU startup control circuit, which can change the startup mode of a CPU without disassembling a CPLD from a circuit board.

In order to solve the technical problem, the CPU startup control circuit comprises a CPU, a power supply and a CPLD, wherein the CPLD is electrically connected with the power supply, the power supply is electrically connected with the CPU, the CPLD controls the CPU to be turned on/off according to a set startup program, the CPU startup control circuit also comprises a remote communication module electrically connected with the CPU, and the CPU is electrically connected with the CPLD.

Optionally, the CPU is electrically connected to the CPLD through an I2C interface.

Optionally, the remote communication module includes a 4G network module, a 5G network module, or an internet of things module.

Optionally, the CPU employs FT2000-4 chips.

Optionally, the portable electronic device includes a power-on key and a detection unit for detecting whether the power-on key is pressed down, and the detection unit is electrically connected to the CPLD.

The CPU is electrically connected with the CPLD and can communicate with the CPLD so as to change a starting program in the CPLD, a manufacturer can remotely send a starting program changing instruction to the remote communication module, and the remote communication module forwards the received starting program updating instruction to the CPU so as to enable the CPU to change the starting program in the CPLD, thereby changing the starting mode of the CPU.

Drawings

FIG. 1 is a block diagram of a conventional CPU power-on control circuit;

FIG. 2 is a block diagram of the CPU power-on control circuit of the present invention.

Detailed Description

The utility model is described in further detail below with reference to specific embodiments.

The circuit board is provided with a CPU startup control circuit shown in figure 2, the startup control circuit comprises a CPU (FT2000-4 chip), a power supply and a CPLD, wherein the CPLD is electrically connected with the power supply, and the power supply is electrically connected with the CPU. A technician determines the starting mode of the CPU as key starting according to the requirements of a client, and then programs and designs a corresponding starting program for the CPLD, so that the CPLD can execute the key starting program to control the CPU to start or shut down. The power-on control circuit further comprises a power-on key (not shown) and a detection unit (not shown), wherein the detection unit is electrically connected with the CPLD. In the key start mode, when the circuit board is powered on but the client does not press the start key, the CPLD does not send an instruction to the power supply to supply power to the CPU, so that the CPU does not start. If the client needs to start the computer, the client presses the start key on the circuit board, the detection unit detects that the start key is pressed and reports the pressed start key to the CPLD, and then the CPLD sends an instruction to the power supply to enable the power supply to supply power to the CPU, so that the CPU is started.

If the client wants to change the boot mode of the CPU to the power-on boot after using for a period of time, the boot program in the CPLD needs to be changed again, and the key boot program is changed to the power-on boot program. In the prior art, a customer needs to send a circuit board back to a manufacturer, and a manufacturer technician detaches a CPLD and records a starting program again, which is troublesome. The utility model is characterized in that the starting program in the CPLD is remotely changed. In order to realize the remote change of the starting mode of the CPU, the starting control circuit also comprises a 4G network module electrically connected with the CPU, and the CPU is electrically connected with the CPLD through an I2C interface. The CPU is electrically connected with the CPLD and can communicate with the CPLD so as to change the starting program in the CPLD, a manufacturer only needs to remotely send a starting program changing instruction to the 4G network module, and the 4G network module forwards the received starting program updating instruction to the CPU, so that the CPU changes the starting program in the CPLD from a key starting program to a power-on starting program, the starting mode of the CPU is changed from the key starting mode to the power-on starting mode, a client does not need to send a circuit board back to the manufacturer, and the method is convenient and rapid. After the starting program in the CPLD is changed into the power-on starting program, as long as the circuit board is electrified, the CPLD outputs an instruction to the power supply according to the power-on starting program so as to enable the power supply to supply power to the CPU, and the CPU is started.

In this embodiment, the 4G network module is used as the remote communication module, and in other embodiments, the 5G network module or the internet of things module may be used as the remote communication module instead.

The above description is only the embodiments of the present invention, and the scope of protection is not limited thereto. The insubstantial changes or substitutions will now be made by those skilled in the art based on the teachings of the present invention, which fall within the scope of the claims.

Claims

1. A CPU startup control circuit comprises a CPU, a power supply and a CPLD, wherein the CPLD is electrically connected with the power supply, the power supply is electrically connected with the CPU, and the CPLD controls the CPU to be turned on/off according to a set startup program, and is characterized in that: the remote communication module is electrically connected with the CPU, and the CPU is electrically connected with the CPLD.

2. The CPU boot control circuit of claim 1, wherein: the CPU is electrically connected with the CPLD through an I2C interface.

3. The CPU boot control circuit of claim 1, wherein: the remote communication module comprises a 4G network module, a 5G network module or an Internet of things module.

4. The CPU boot control circuit of claim 1, wherein: the CPU adopts FT2000-4 chips.

5. The CPU boot control circuit of claim 1, wherein: the power-on button comprises a power-on button and a detection unit for detecting whether the power-on button is pressed down, wherein the detection unit is electrically connected with the CPLD.