Time sequence control circuit and front-end bus power supply with time sequence control circuit

Abstract

The invention provides a time sequence control circuit, which is used for providing a time sequence control signal for a front-end bus power supply of a computer. The time sequence control circuit comprises an electronic switch and two voltage-sharing resistors, wherein the two voltage-sharing resistors are connected in series with each other and are connected to a system power supply and grounded respectively; the time sequence control signal is output between the two voltage-sharing resistors; the first end of the electronic switch is electrically connected with the two voltage-sharing resistors, and the second end of the electronic switch is electrically connected to a control signal end of the computer; and the level of the control signal end and the level of the time sequence control signal are set at the same phase. The invention also relates to a front-end bus power supply with the time sequence control circuit.

Description

technical field

[0001] The invention relates to a sequence control circuit, in particular to a computer front-side bus power supply sequence control circuit and a front-side bus power supply with the sequence control circuit. Background technique

[0002] A front side bus (Front Side Bus, FSB) is a bus used to connect a computer central processing unit (Central Processing Unit, CPU) to a north bridge chip. Generally speaking, the front-side bus is the most important channel for exchanging data between the CPU and the outside world, so the data transmission capability of the front-side bus has a great effect on computing and overall performance. The stability of the front-side bus power supply has a great impact on its data transmission capability.

[0003] The existing FSB power supply generally includes the following functional modules:

[0004] An advanced configuration and power management interface (Advanced Configuration and Power Management Interface, ACPI) chip; ...

Examples

Embodiment Construction

[0032] see figure 1 The FSB power supply 100 of the preferred embodiment of the present invention includes an ACPI chip 10, an ACPI chip power supply 20, a timing control circuit 30, a dual power supply generating circuit 40, a memory power generating circuit 50 and a FSB power generating circuit 60. The ACPI chip power supply 20 , timing control circuit 30 , dual power supply generation circuit 40 , memory power generation circuit 50 and FSB power generation circuit 60 are all electrically connected to the ACPI chip 10 . The ACPI chip power supply 20 can convert the voltage provided by the system power supply (not shown) into the working voltage required by the ACPI chip 10 . The timing control circuit 30 provides a timing control signal VCC3V for the ACPI chip 10 . The dual power generation circuit 40 is electrically connected to the memory power generation circuit 50 , and provides an input voltage signal 5V_DUAL for the memory power generation circuit 50 as an input powe...

technical field

[0001] The invention relates to a sequence control circuit, in particular to a computer front-side bus power supply sequence control circuit and a front-side bus power supply with the sequence control circuit. Background technique

[0002] A front side bus (Front Side Bus, FSB) is a bus used to connect a computer central processing unit (Central Processing Unit, CPU) to a north bridge chip. Generally speaking, the front-side bus is the most important channel for exchanging data between the CPU and the outside world, so the data transmission capability of the front-side bus has a great effect on computing and overall performance. The stability of the front-side bus power supply has a great impact on its data transmission capability.

[0003] The existing FSB power supply generally includes the following functional modules:

[0004] An advanced configuration and power management interface (Advanced Configuration and Power Management Interface, ACPI) chip; ...

Examples

Embodiment Construction

[0032] see figure 1 The FSB power supply 100 of the preferred embodiment of the present invention includes an ACPI chip 10, an ACPI chip power supply 20, a timing control circuit 30, a dual power supply generating circuit 40, a memory power generating circuit 50 and a FSB power generating circuit 60. The ACPI chip power supply 20 , timing control circuit 30 , dual power supply generation circuit 40 , memory power generation circuit 50 and FSB power generation circuit 60 are all electrically connected to the ACPI chip 10 . The ACPI chip power supply 20 can convert the voltage provided by the system power supply (not shown) into the working voltage required by the ACPI chip 10 . The timing control circuit 30 provides a timing control signal VCC3V for the ACPI chip 10 . The dual power generation circuit 40 is electrically connected to the memory power generation circuit 50 , and provides an input voltage signal 5V_DUAL for the memory power generation circuit 50 as an input powe...

Images