Samsung S3C2440A - Manual (Page 404)

LCD CONTROLLER S3C2440A RISC MICROPROCESSOR
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Dithering Mode Register
Register Address R/W Description Reset Value
DITHMODE 0X4D00004C R/W STN: Dithering mode register.
This register reset value is 0x00000 But, user can
change this value to 0x12210.
(Refer to a sample program source for the latest
value of this register.)
0x00000
DITHMODE Bit Description Initial state
DITHMODE [18:0] Use one of following value for your LCD :
0x00000 or 0x12210
0x00000