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A dbi data transmission method and system

A data transmission method and a technology of a data transmission system, applied in the field of DBI data transmission methods and systems, can solve problems such as increasing, difficulty in meeting transmission requirements, inability to distinguish commands, sending data and receiving data, etc., to achieve operational convenient effect

Active Publication Date: 2020-08-04
SHENZHEN AIXIESHENG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But no matter which mode, when the existing DBI interface sends data, the peripheral CPU needs to wait for the current data transmission to complete before continuing to write the next new data to DBI. This transmission method is very inconvenient and not very good. The operation of distributing commands, sending data and receiving data
With the intelligent development of electronic products, the amount of information displayed on LCD displays is increasing. As the communication interface between LCD display devices and external chips, the amount of data transmitted by DBI is also increasing. The traditional single-command or single-data The transmission method has been difficult to meet the heavy transmission demand

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  • A dbi data transmission method and system
  • A dbi data transmission method and system
  • A dbi data transmission method and system

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Embodiment Construction

[0027] see figure 1 , which is a flow chart of the data transmission method of DBI in the embodiment of the present invention; the data transmission method of the DBI includes the following steps:

[0028] Step S1: Obtain the information to be transmitted sent by the peripheral CPU, and temporarily store the information to be transmitted in the first first-in-first-out memory (TX_FIFO); the information to be transmitted includes data and tokens.

[0029] The present invention receives the information sent by the CPU through the peripheral bus through the bus interface unit, decodes the information, obtains valid information from the decoded information, and stores the valid information in the register unit (register unit) ; After receiving the valid information, the register unit acquires relevant control information and information to be transmitted. The control information includes, for example, frequency control of the transmission clock (SCL), transmission mode control (t...

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Abstract

The present invention discloses a data transmission method of a DBI. The method comprises the following steps: acquiring to-be-transmitted information sent by a peripheral CPU, and temporarily storingthe to-be-transmitted information into a first FIFO memory, wherein the to-be-transmitted information comprises data and a token; and acquiring currently to-be-transmitted information from the firstFIFO memory, identifying a transmission instruction corresponding to the token in the currently to-be-transmitted information, and transmitting the currently to-be-transmitted information according tothe transmission instruction. Compared with the prior art, according to the technical scheme of the present invention, the data can be continuously written from the CPU to the DBI by setting the first FIFO memory, and by setting the token, the operations of distributing commands, transmitting data, and receiving data can be more accurately distinguished, and the technical scheme is easy to operate, simple and flexible.

Description

technical field [0001] The present invention relates to the communication field, in particular to a DBI data transmission method and system. Background technique [0002] A liquid crystal data bus interface (Display Bus Interface, hereinafter referred to as DBI) is widely used for data communication between a liquid crystal display and an external chip. [0003] When DBI transmits data, its transmission clock is provided by the master device, and valid data is transmitted on the data line. During the transmission, the master device provides a chip select signal to activate the slave device. However, DBI is a half-duplex communication bus, and the receiving / sending data between master and slave devices cannot be carried out at the same time. In addition, the DBI transmission protocol is relatively richer. There are two types of information exchanged between the master device and the slave device—command and data, and the master device needs to send relevant information to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42G06F3/14
CPCG06F3/14G06F13/385G06F13/4291
Inventor 胡春林余晋权夏群兵梁丕树
Owner SHENZHEN AIXIESHENG TECH CO LTD