ssd1908 Solomon Systech Limited:, ssd1908 Datasheet - Page 54

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

REG[89h] bits 1-0,
REG[88h] bits 7-0
Reset
Reset
Type
state
Type
state
Solomon Systech
Bit
Bit
Floating Window Start Position Y Register 0
Floating Window Start Position Y Register 1
Position Bit
Floating
Window
Start Y
RW
NA
0
7
7
0
7
0
Position Bit
Table 7-11 : 32-bit Address X Increments for Various Color Depths
Floating
Window
Start Y
Floating Window Start Position Y Bits [9:0]
These bits determine the start position Y of the floating window in relation to the origin
of the panel. Due to the SSD1908 Display Rotate feature, the start position Y may not
be a vertical position value (only true in 0° and 180° Floating Window). For further
information on defining the value of the Start Position Y register, see Section 20
“Floating Window Mode”.
The register is also incremented according to the display orientation. For 0° and 180°
Display Rotate Mode, the start position Y is incremented by 1 line. For 90° and 270°
Display Rotate Mode, the start position Y is incremented by y pixels where y is relative
to the current color depth. Refer to Table 7-12 : 32-bit Address Y Increments for
Various Color Depths.
Depending on the color depth, some of the higher bits in this register are unused
because the maximum vertical display height 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
Color Depth (bpp)
Position Bit
Floating
Window
Start Y
RW
NA
5
5
0
5
0
0
16
1
2
4
8
Position Bit
Floating
Window
Start Y
RW
NA
4
0
0
0
4
4
Oct 2003
Position Bit
Pixel Increment (x)
Floating
Window
Start Y
RW
NA
3
0
0
3
3
0
P 44/44
32
16
8
4
2
Position Bit
Floating
Window
Start Y
RW
NA
2
0
0
2
2
0
Rev 1.0
Position Bit
Position Bit
Floating
Window
Floating
Window
Start Y
Start Y
RW
RW
1
0
9
0
1
1
SSD1908
REG[88h]
REG[89h]
Position Bit
Position Bit
Window
Floating
Floating
Window
Start Y
Start Y
RW
RW
0
0
0
0
0
8