ssd1908 Solomon Systech Limited:, ssd1908 Datasheet - Page 53

• Manufacturer Part Number: ssd1908
• Description: Lcd Drivers,lcd Controllers
• Manufacturer: Solomon Systech Limited:

REG[81h] bits 1-0,
REG[80h] bits 7-0
REG[85h] bits 1-0,
REG[84h] bits 7-0
Reset
Reset
Type
state
Type
state
SSD1908
Bit
Bit
Floating Window Start Position X Register 0
Floating Window Start Position X Register 1
Position Bit
Floating
Window
Start X
RW
NA
7
7
0
7
0
0
Rev 1.0
Position Bit
Floating
Window
Start X
Floating Window Line Address Offset Bits [9:0]
These bits are the LCD display’s 10-bit address offset from the starting double-word of
line “n” to the starting double-word of line “n + 1” for the floating window. Note that this
is a 32-bit address increment.
Note
These bits will not effective until the Floating Window Enable bit is set to 1 (REG[71h]
bit 4=1).
Floating Window Start Position X Bits [9:0]
These bits determine the start position X of the floating window in relation to the origin
of the panel. Due to the SSD1908 Display Rotate feature, the start position X may not
be a horizontal position value (only true in 0° and 180° rotation). For further information
on defining the value of the Start Position X register, see Section 20 “Floating Window
Mode”.
The value of register is also increased differently based on the display orientation. For
0° and 180° Display Rotate Mode, the start position X is incremented by x pixels where
x is relative to the current color depth. Refer to Table 7-11 : 32-bit Address X
Increments for Various Color Depths. For 90° and 270° Display Rotate Mode, the start
position X is incremented by 1 line.
Depending on the color depth, some of the higher bits in this register are unused
because the maximum horizontal display width is 1024 pixels.
Note
These bits will not effective until the Floating Window Enable bit is set to 1 (REG[71h]
bit 4=1).
RW
NA
6
6
0
6
0
0
P 43/43
Position Bit
Floating
Window
Oct 2003
Start X
RW
NA
5
5
0
5
0
0
Position Bit
Floating
Window
Start X
RW
NA
4
4
0
0
0
4
Position Bit
Floating
Window
Start X
RW
NA
3
3
0
0
0
3
Position Bit
Floating
Window
Start X
RW
NA
2
2
0
0
0
2
Position Bit
Position Bit
Solomon Systech
Floating
Window
Floating
Window
Start X
Start X
RW
RW
1
1
0
9
0
1
REG[84h]
REG[85h]
Position Bit
Position Bit
Floating
Window
Floating
Window
Start X
Start X
RW
RW
0
0
0
8
0
0