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
CN107704701AInactive Publication Date: 2018-02-16ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
Publication Date
2018-02-16
Estimated Expiration
Not applicable Ā· inactive patent

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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.
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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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