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A jumping cap circuit and its design method

A design method and circuit technology, applied in the direction of CAD circuit design, logic circuit interface device, logic circuit connection/interface layout, etc., can solve the problem that the chip cannot work normally, and achieve the effect of improving reliability and realizing the circuit.

Active Publication Date: 2021-01-19
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a jumper cap circuit and its design method to solve the problem that the chip cannot work normally after the jumper cap falls off in the circuit connection mode in the prior art

Method used

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  • A jumping cap circuit and its design method
  • A jumping cap circuit and its design method
  • A jumping cap circuit and its design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 2 , figure 2 It is a schematic circuit schematic diagram of a jumping cap circuit provided in the embodiment of the present application. Depend on figure 2 It can be seen that the jumper circuit of this embodiment includes a 3-pin pin header and a chip, and also includes a pull-up resistor R2, and the pin header is connected to the chip through the pull-up resistor R2. figure 2 Among them, pin1 is the first pin, pin2 is the second pin, pin3 is the third pin, resistor R1 is connected to the first pin, R2 is a pull-up resistor, pull-up resistor R2 is connected to the second pin, and resistor R3 is connected to the third pin connect.

[0039] In the jumper circuit of this embodiment, the default input state of the chip is high level. The first pin is grounded through the resistor R1, and the second pin is pulled high by the pull-up R2 and then connected to the chip. The resistance value relationship between the resistor R1 and the pull-up resistor R2 is...

Embodiment 2

[0048] exist figure 2 On the basis of the illustrated embodiment see image 3 , image 3 It is a schematic circuit schematic diagram of another jumping cap circuit provided in the embodiment of the present application. Depend on image 3 It can be seen that the jumper circuit of this embodiment also includes a 3pin pin header and a chip, and also includes a pull-down resistor R2 and a resistor R1 that divides the voltage with the pull-down resistor R2. The pin header is connected to the chip through the pull-down resistor R2. The first pin is pulled up to Vcc through resistor R1. image 3 Among them, pin1 is the first pin, pin2 is the second pin, pin3 is the third pin, resistor R1 is connected to the first pin, R2 is a pull-down resistor, pull-down resistor R2 is connected to the second pin, and resistor R3 is connected to the third pin.

[0049] The default input state of the chip in the jumper circuit of this embodiment is low level. The first pin is pulled high by the...

Embodiment 3

[0056] exist figure 2 and image 3 On the basis of the illustrated embodiment see Figure 4 , Figure 4 It is a schematic flowchart of a design method of a jumper cap circuit provided in the embodiment of the present application. Depend on Figure 4 As can be seen, the design method of the jump cap circuit in the present application mainly includes:

[0057] S1: Obtain the default input state of the chip, where the default input state of the chip includes high level and low level.

[0058] This application is mainly applicable to a jumper circuit including a chip and a 3pin header.

[0059] S2: According to the default input state of the chip, set the default value of the chip by setting the first resistor on the line where the first pin of the pin header is located, and setting the second resistor on the line where the second pin of the pin header is located. value. Among them, the default value of the chip includes logic 0 or logic 1, the second resistor is a pull-up...

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Abstract

This application discloses a jumper cap circuit and its design method. The jumper cap circuit includes a 3pin pin header and a chip, and also includes: a pull-up resistor or a pull-down resistor, and the pin header is connected to the chip through the pull-up resistor or pull-down resistor. connection, and a resistor R1 that forms a voltage divider circuit with a pull-up resistor or a pull-down resistor, and the resistor R1 is connected to a pin of the pin header. The design method includes: obtaining the default input state of the chip, according to the default input state of the chip, by setting a first resistor on the line where the first pin of the pin header is located, and setting a second resistor on the line where the second pin of the pin header is located. The method of two resistors sets the default value of the chip. Through the jumper cap circuit and its design method in this application, the chip can continue to maintain the original default input state when the jumper cap falls off, so as to ensure that the chip can work normally, which is conducive to improving the reliability of the server.

Description

technical field [0001] The present application relates to the technical field of server system design, in particular to a jumping cap circuit and a design method thereof. Background technique [0002] There are usually a variety of pin headers and jumper caps on the server motherboard. By changing the position of the jumper caps, the level status of the signal connected to the header (that is, the pin header) can be changed, thereby configuring the chip parameters matched by the hdader. When the server leaves the factory, it is usually set with default parameters, so as to ensure that the server can be used normally after arrival. These default parameters are specifically implemented by jumping caps connected to different pins of the header. [0003] The current jumper circuit connection relationship can be found in figure 1 ,Depend on figure 1 It can be seen that in the 3pin header used for parameter setting, pin1 is connected to the power supply Vcc, pin2 is connected t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40H03K19/0175
CPCH03K19/017509G06F13/4068G06F30/36G06F30/394
Inventor 王鹏
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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