參數資料
型號: SSD1905QT2
廠商: Electronic Theatre Controls, Inc.
英文描述: LCD Graphics Controller CMOS
中文描述: LCD圖形控制器的CMOS
文件頁數: 48/153頁
文件大小: 863K
代理商: SSD1905QT2
SSD1905
Rev 1.3
10/2002
SOLOMON
39
Floating Window Start Position Y Register 1
7
6
REG[89h]
0
Bit
5
4
3
2
1
0
0
0
0
0
0
Floating
Window
Start Y
Position Bit
9
RW
0
Floating
Window
Start Y
Position Bit
8
RW
0
Type
Reset
state
REG[89h] bits 1-0,
REG[88h] bits 7-0
NA
0
NA
0
NA
0
NA
0
NA
0
NA
0
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 SSD1905 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 19
“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.
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).
Table 7-11 : 32-bit Address Y Increments for Various Color Depths
Color Depth (bpp)
1
2
4
8
16
Pixel Increment (y)
32
16
8
4
2
Floating Window End Position X Register 0
7
6
REG[8Ch]
0
Bit
5
4
3
2
1
Floating
Window
End X
Position Bit
7
RW
0
Floating
Window
End X
Position Bit
6
RW
0
Floating
Window
End X
Position Bit
5
RW
0
Floating
Window
End X
Position Bit
4
RW
0
Floating
Window
End X
Position Bit
3
RW
0
Floating
Window
End X
Position Bit
2
RW
0
Floating
Window
End X
Position Bit
1
RW
0
Floating
Window
End X
Position Bit
0
RW
0
Type
Reset
state
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