Rainbow-electronics W90P710CDG Manual de usuario descargar pdf (Pagina 260)

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W90P710CD/W90P710CDG

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Monochrome STN with 4-bit data bus:

Fig. 6.10.3.5 Monochrome STN output format - 1

Monochrome STN with 8-bit data bus:

Fig. 6.10.3.6 Monochrome STN output format - 2

Only when LUTWREN is enabled, Lookup Table SRAM can be read / write by CPU. If LUTWREN is

disabled, Lookup Table SRAM is accessed by LCD Controller.

Palette function can’t be enabled for STN panel. Because the Lookup Table SRAM is only 256 x32 bit,

so , if one of Video or OSD image is 8bpp, both the VDLUTEN and OSDLUTEN can only be enabled

when the Palette Table of Video is the same as OSD.

If VDLUTEN or OSDLUTEN is enabled, LCD Controller will output data from Lookup Table SRAM for

8bpp, 4bpp, 2bpp, 1bpp image. Else, LCD Controller will treat 8bpp data as RGB332, 4bpp as 16

gray-level, 2bpp as 4 gray-level, 1bpp as 2 gray-level (black or white).

At normally, LCD Databus output is RGB888, 24bit. If LCDBUS is set to 01, LCD Databus output is

RGB666, 18bit. If LCDBUS is set to 10, LCD Databus output is RGB332, 8bit. The other bit will be

1 2 ... 255 256 257 258 259 260 261 262 263 264 265 ... 551 552

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Rainbow-electronics W90P710CDG Manual de usuario Pagina 260

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