Sequencing control circuit
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorXIANG ZHANG
Life of this patent
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Abstract
A sequencing control circuit includes an electronic component configured for controlling a signal output to a motherboard, and input voltages being input to the sequencing control circuit. The input voltages are connected to an input terminal of the electronic component. The electronic component includes a preset threshold and input voltage requirements. The electric component is configured such that only when all of the required input voltages rise to their peak values and the voltage of the input terminal of the electronic component reaches the threshold. The electronic component is triggered, and an output terminal of the electronic component outputs a high level signal to the motherboard.
Claims13
A sequencing control circuit for controlling a motherboard, the sequencing control circuit comprising:
- an electronic component configured for controlling a signal output to the motherboard;
- and
- input voltages being input to the sequencing control circuit, the input voltages connected to an input terminal of the electronic component;
- wherein the electronic component comprises a preset threshold and input voltage requirements, the electric component is configured such that only when all of the required input voltages rise to their peak values and the voltage of the input terminal of the electronic component reaches the threshold, the electronic component is triggered, and an output terminal of the electronic component outputs a high level signal to the motherboard.
A method for controlling the sequencing of a motherboard, the method comprising of providing:
- the motherboard supplied with a first voltage and then supplied with a second voltage secondly, the first voltage being different from the second voltage;
- wherein the first and second voltages being input to a control circuit, the control circuit outputting a threshold voltage when the first voltage and second voltage provided simultaneously;
- and
- the control circuit connected to a chip, the chip to be triggered by the threshold voltage and output a third voltage to the circuit instead of the second voltage, the third voltage being equal to the second voltage.
A method for ensuring normal sequencing of a motherboard, the method comprising:
- providing:
- three input voltages of the motherboard rising to their peak values respectively;
- three circuits connecting three input voltages respectively to a common node for outputting a particular voltage;
- and
- the particular voltage being input to a chip for triggering the chip;
- wherein the chip outputs a signal to the motherboard, the signal is sent only after three input voltages of the motherboard have risen to their peak values for ensuring normal sequencing of the motherboard.
Dependencies are inferred from the claim text.