s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 399

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

S3C2410A
FRAME Buffer Start Address 3 Register
NOTE:
Example 1. LCD panel = 320*240, 16gray, single scan
Example 2. LCD panel = 320*240, 16gray, dual scan
Example 3. LCD panel = 320*240, color, single scan
LCDSADDR3
OFFSIZE
PAGEWIDTH
LCDSADDR3
Register
The values of PAGEWIDTH and OFFSIZE must be changed when ENVID bit is 0.
Frame start address = 0x0c500000
Offset dot number = 2048 dots ( 512 half words )
LINEVAL = 240-1 = 0xef
PAGEWIDTH = 320*4/16 = 0x50
OFFSIZE = 512 = 0x200
LCDBANK = 0x0c500000 >> 22 = 0x31
LCDBASEU = 0x100000 >> 1 = 0x80000
LCDBASEL = 0x80000 + ( 0x50 + 0x200 ) * ( 0xef + 1 ) = 0xa2b00
Frame start address = 0x0c500000
Offset dot number = 2048 dots ( 512 half words )
LINEVAL = 120-1 = 0x77
PAGEWIDTH = 320*4/16 = 0x50
OFFSIZE = 512 = 0x200
LCDBANK = 0x0c500000 >> 22 = 0x31
LCDBASEU = 0x100000 >> 1 = 0x80000
LCDBASEL = 0x80000 + ( 0x50 + 0x200 ) * ( 0x77 + 1 ) = 0x91580
Frame start address = 0x0c500000
Offset dot number = 1024 dots ( 512 half words )
LINEVAL = 240-1 = 0xef
PAGEWIDTH = 320*8/16 = 0xa0
OFFSIZE = 512 = 0x200
LCDBANK = 0x0c500000 >> 22 = 0x31
LCDBASEU = 0x100000 >> 1 = 0x80000
LCDBASEL = 0x80000 + ( 0xa0 + 0x200 ) * ( 0xef + 1 ) = 0xa7600
0X4D00001C
[21:11]
[10:0]
Address
Bit
Virtual screen offset size (the number of half words).
This value defines the difference between the address of the last half
word displayed on the previous LCD line and the address of the first
half word to be displayed in the new LCD line.
Virtual screen page width (the number of half words).
This value defines the width of the view port in the frame.
R/W
R/W
STN/TFT: Virtual screen address set
Description
Description
LCD CONTROLLER
Reset Value
00000000000
Initial State
0x00000000
000000000
15-33