Feb 17, 20231 min read

The Interface of RGB 888

RGB is a color standard in the industry, which is used to obtain a variety of colors by changing the three color channels red (R), green (G) and blue (B) and superimposing them on each other. RGB represents the color channels red, green and blue, and this standard includes almost all colors perceived by human vision. It is one of the most widely used color systems.

Type of RGB Interface

Parallel RGB

Signal	Description
VSYNC	frame synchronizing signal
HSYNC	horizontal synchronizing signal
DEN	Data enable signal
DCLK	Data clock signal
DATA[0:23]	Data signal

Serial RGB

Signal	Description
VSYNC	frame synchronizing signal
HSYNC	horizontal synchronizing signal
IIC/SPI	Parameter configuration signal
DCLK	Data clock signal
DATA[0:23]	Data signal

Characteristic

The interface is generally 3.3V level
Need synchronization signal
Need to refresh the image data from time to time
Appropriate timing needs to be configured
Resolution
- Serial RGB
  - 800*480
  - Clock Frequency : 83 MHz
- Parallel RGB
  - 1920*1080
  - Clock Frequency : 149 MHz

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