I2C multiplexer and control method supporting batch read verification
A multiplexer, batch reading technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problem of not being able to provide batch reading verification function, occupying a large PCB area, large PCB area, etc., to reduce The time to read the verification, improve the compatibility, reduce the effect of the area
Active Publication Date: 2016-07-20
WUHAN JINGLI ELECTRONICS TECH
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Problems solved by technology
[0004] At present, the existing ASIC chips such as PCA9546, which are used in one-master and multiple-slave I2C bus communication, have a fixed number of channels; they are not flexible to use, occupy a large PCB area, and can only realize single-channel or full-channel writing and reading; It cannot provide controllable channel broadcasting and controllable batch reading and verification functions, and it is not flexible to use and occupies a large PCB area
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[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] figure 1 It is a functional module frame diagram of the present invention, an I2C multiplexer that supports batch reading and verification, and is used for I2C bus communication of one master and multiple slaves. The I2C multiplexer includes a sampling debounce module, Status control module, internal I2C storage module, channel control module and verification module.
[0028] The sampling debounce module is used to connect with the external I2C master device; the sampling debounce module is also connected with the state control module; the state control module is respectively connected with the channel control module, the internal I2C storage module and the verification module; the internal I2C storage module It is also connected with the verification module; the channel control module is also used to connect with multiple exter...
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The invention discloses an I2C multiplexer which supports batch reading verification and is used for communication between an external I2C master device and a plurality of external I2C slave devices. The I2C multiplexer comprises a sampling vibration-removal module, a state controlling module, an internal I2C storage module, a channel control module and a verification module. The invention further discloses a control method applying the I2C multiplexer, and the method supports batch reading verification of written-in data, bidirectional SCL transmission and data forwarding of a controllable channel broadcast mode. The I2C multiplexer supporting batch reading verification completely supports protocols, improves the compatibility of the devices, and has certain anti-jamming capability and a high integration level. Due to the introduction of the batch reading verification function, the time for reading verification is shortened, and therefore the communication efficiency of the devices is improved.
Description
technical field [0001] The invention relates to the technical field of I2C bus communication, in particular to an I2C multiplexer that supports batch read verification, and also relates to a control method for applying the I2C multiplexer that supports batch read verification . Background technique [0002] The I2C bus is a set of simple bidirectional two-wire serial buses developed by Philips for efficient control between tiny electronic devices or components. Each device connected to the I2C bus can be addressed by software through a unique address set in hardware and a simple master / slave relationship that has always existed. [0003] In recent years, I2C bus technology has been widely used in the field of electronic test and measurement. Due to the special mission of electronic test and measurement technology in the development of science and technology, its requirements for high reliability and high controllable precision are determined. Among them, in the technical ...
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IPC IPC(8): G06F13/42G06F13/38
Inventor 彭骞陈凯郑增强沈亚飞邓标华欧昌东唐奇林
Owner WUHAN JINGLI ELECTRONICS TECH