Analysis method and system for different pull-up resistors in low-speed signals

An analysis method and analysis system technology, applied in the field of serial communication bus, can solve problems such as selection error and signal energy loss, and achieve the effect of improving correctness, ensuring safety and ensuring reliability

Inactive Publication Date: 2018-02-16
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide an analysis method and system for different pull-up resistors in low-speed signals, aiming at solving the problem that the selection of I2C pull-up resistors depends on personal experience in the current circuit design, and avoiding the selection of wrong resistor values, resulting in Loss of signal energy to improve the correctness of circuit design

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  • Analysis method and system for different pull-up resistors in low-speed signals

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[0031] In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily lim...

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Abstract

The present invention provides an analysis method and system for different pull-up resistors in low-speed signals. The method comprises: respectively connecting different pull-up resistors on an I2C signal line; obtaining an I2C link topology; setting a simulation parameter; generating a simulation waveform under the different pull-up resistors; and according to the overshoot and the rise time ofthe simulation waveform, selecting the pull-up resistor. In embodiments of the present invention, different pull-up resistors are connected, an I2C link topology is obtained, a simulation waveform under different pull-up resistors is generated, and an appropriate pull-up resistor is selected according to the overshoot and the rise time of the simulation waveform, so that loss of the signal energydue to selection of the wrong resistance can be avoided, improvement of the correctness of circuit design can be realized, reliability of mutual communication between each communicated device under the I2C protocol can be ensured, the safety of the server operation can be further ensured, and signal integrity and reliability of the RACK cabinet server can be greatly enhanced.

Description

technical field [0001] The invention relates to the field of serial communication buses, in particular to an analysis method and system for different pull-up resistors in low-speed signals. Background technique [0002] The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS for connecting microcontrollers and their peripherals. It is a bus standard widely used in the field of microelectronics communication control. [0003] This bus standard is a special form of synchronous communication, which has the advantages of less interface lines, simple control mode, small device package, and high communication rate. The I2C bus supports any IC production process, passing information between devices connected to the bus through the serial data (SDA) line and serial clock (SCL) line. In circuit design, the two signal lines must be connected to pull-up resistors to pull up the voltage of the signal line to a high potential, and use the pull-down resistor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘法志
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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