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Single port palette sram controller and its control method

A control method and palette technology, applied in the field of LCD control, can solve problems such as single loading mode, achieve the effects of reducing chip power consumption, reducing production costs, and improving chip yield

Active Publication Date: 2015-11-18
苏州国芯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 2. The existing technology has a single loading mode, and generally only supports reading and writing by the CPU to complete loading

Method used

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  • Single port palette sram controller and its control method
  • Single port palette sram controller and its control method
  • Single port palette sram controller and its control method

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Embodiment Construction

[0041] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0042] The invention discloses a single-port palette SRAM controller in a C*CoreC9000 platform dual-channel LCD controller and a control method thereof. The controller includes

[0043] palette SRAM, the palette SRAM includes a first interface for loading palette data and a second interface for reading pixel data;

[0044] Registers and ...

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Abstract

The invention discloses a single-port color palette SRAM controller and a control method of the single-port color palette SRAM controller. The controller comprises a color palette SRAM, a register, a DMA, a pixel unpacker and a clock frequency divider. The clock frequency divider is used for dividing frequencies of a bus clock and obtaining a pixel clock. The frequency of the bus clock is at least two times that of the pixel clock. By means of SRAM frequency doubling and the design of SRAM accessing and storing arbitration, only a single-port SRAM can achieve the function of a color palette of a double-channel LCD controller. The area of the used SRAM is only one fourth of that of a single-port color palette SRAM in the prior art so as to reduce production cost of chips, improve the yield of the chips and reduce power consumption of the chips.

Description

technical field [0001] The present application relates to the technical field of LCD control, in particular to a single-port palette SRAM controller in a C*CoreC9000 platform dual-channel LCD controller and a control method thereof. Background technique [0002] With the continuous improvement of LCD display resolution, the clock and data signals of traditional single-channel LCD are limited by signal integrity, etc., which can no longer meet the requirements of high resolution. More and more LCD displays use dual data channels or even four data channels, and the LCD controller with multiple data channels sends multiple pixel data in one pixel cycle. [0003] In some applications that do not require high color richness, color palettes are usually used to reduce video buffering and system bus bandwidth requirements. [0004] ginseng figure 1 As shown, two dual-port SRAMs are generally used in the prior art dual-channel LCD controller to implement the palette function. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 郑茳肖佐楠匡启和谢伟军刘卫华尹平
Owner 苏州国芯科技股份有限公司
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