Device for generating SPI interface figure signal and figure signal generator

Abstract

The invention discloses a device for generating an SPI interface figure signal. The device comprises a programmable logic device used for generating multiway figure signals, the programmable logic device is provided with multiple figure signal output terminals corresponding to the multiway figure signals one by one; the programmable logic device is internally provided with a data dispatcher and multiple SPI controllers correspondingly in communicating connection with the figure signal output terminals one by one; the data dispatcher is used for dispatching image data into the multiple SPI controllers in parallel; and each SPI controller is used for converting the received image dispatching data into an SPI protocol format. According to the device for generating the SPI interface figure signal, the independent control and parallel drawing of a multiway figure signal output channel are achieved based on the hardware logic of the programmable logic device, the data processing capacity ofa central processing unit can be greatly reduced, the processing performance and efficiency of the central processing unit are improved, the high-speed parallel drawing of an SPI interface display module is achieved, and then the development, production, and detection efficiency of the SPI interface display module are satisfied.

Description

technical field [0001] The invention relates to the technical field of image signal generation, in particular to a device for generating SPI interface graphic signals and a graphic signal generator. Background technique [0002] With the development and popularization of smart watches and smart bracelets, the demand for small-sized display modules based on the SPI interface has surged, thus putting forward new requirements for graphic signal generators that support the SPI interface. [0003] At present, the graphics signal generators supporting the SPI interface used by major display module manufacturers are all implemented by embedded CPUs. Due to the limitations of the CPU, it is impossible to achieve parallel high-speed drawing of multiple signal output channels, which affects gamma adjustment. The speed and time seriously affect the research and development, production and testing efficiency of the display module production line. Contents of the invention [0004] Ai...

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Problems solved by technology

[0003] At present, the graphics signal generators supporting the SPI interface used by major display module manufacturers are all implemented by embedded CPUs. Due to the limitations of the CPU, it is impossible to achieve parallel high-speed drawing of multiple signal output channels, which affects gamma adjustment. The speed and time seriously affect the research and development, production and testing efficiency of the display module production line

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