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A readable-writable communication controller of serial interface bus with SPI interface

A technology of SPI interface and serial interface, which is applied in the field of control devices for control networks, can solve problems such as unsatisfactory versatility, and achieve the effects of fast speed, simplified control logic, and simple protocol

Inactive Publication Date: 2007-05-16
贵州以太科技信息产业有限责任公司 +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not ideal enough in terms of versatility

Method used

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  • A readable-writable communication controller of serial interface bus with SPI interface
  • A readable-writable communication controller of serial interface bus with SPI interface
  • A readable-writable communication controller of serial interface bus with SPI interface

Examples

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Embodiment Construction

[0014] Example. As shown in accompanying drawing 1, the composition of the readable and writable serial interface bus communication controller that has SPI interface comprises communication assembly, data buffer processing unit 1, interface controller, programmable I / O, EEPROM and SPI (serial peripheral interface) interface; the communication assembly includes a bus part and a communication logic control part; the composition of the bus part includes a serial asynchronous transceiver unit at the bus end and a data buffer processing unit 2 connected thereto; the communication logic control part includes a communication control unit, an error counting unit And an error handling circuit, a carrier sense multiple access conflict monitoring circuit. As shown in accompanying drawing 2, the composition of bus end serial asynchronous transceiver unit comprises bus end serial asynchronous transceiver, the parallel-serial conversion circuit and serial-parallel conversion circuit connect...

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Abstract

The disclosed read-write serial interface bus communication controller with SPI interface comprises: a communication assembly, which includes the bus included both of a serial asynchronous receiver-transmitter and a connected buffer process unit 2 and the logic control part included a control unit, an error counting and processing circuit, and a carrier detection multi-address access conflict monitor circuit; a data buffer process unit 1; an interface controller; a SPI interface; and an EFPROM. This invention simplifies control logic for CPU to introduce convenience for user and provider.

Description

technical field [0001] The invention relates to a control device for controlling a network, in particular to a control device with interface and communication functions for controlling a network. Background technique [0002] In the past, the multi-address communication between single-chip microcomputer and single-chip microcomputer, or single-chip microcomputer and PC personal computer generally used parallel interface to carry out serial bus communication. The bus communication controllers (also known as bus communication control chips) used in communication are basically designed according to the working mode of synchronous communication, and are mostly used in industry. This parallel interface bus communication controller has the characteristics of fast data transmission speed, strong anti-interference ability, strong fault tolerance function, high reliability, and can work in harsh environments. However, the production cost of this bus communication controller is relat...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/56H04L29/02
Inventor 刘叶冰李筑谢后贤杨为民张琦黄锋
Owner 贵州以太科技信息产业有限责任公司
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