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參數(shù)資料
| 型號： | TVP3020-135 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Video Interface PALETTE(視頻接口調(diào)色器) |
| 中文描述： | 視頻接口盒（視頻接口調(diào)色器） |
| 文件頁數(shù)： | 89/98頁 |
| 文件大?。?/td> | 582K |
| 代理商： | TVP3020-135 |
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E–5
Window Start (x, y) Register
These registers are used to specify the (x,y) coordinate of the upper left corner of the cross hair cursor
window or auxiliary window. The Window Start X register is made up of the Window Start X LSB (WSXL)
and the Window Start X MSB (WSXM); the Window Start Y register is made up of the Window Start Y LSB
(WSYL) and the Window Start Y MSB (WSYM). They are not initialized and may be written to or read from
by the MPU at any time. The Window Start is not updated until the vertical retrace intrval after WSYM has
been written to by the MPU.
WSXL and WSXM are cascaded to form a 12–bit Window Start X register. Similarly, WSYL and WSYM are
cascaded to form a 12–bit Window Start Y register. Bits D4–D7 of WSXM and WSYM are always a logical
zero.
Table J–7.
Window Start X MSB
Window Start X LSB
(WSXM)
(WSXL)
Data bit
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
X Address
0
0
0
0
11
10
9
8
7
6
5
4
3
2
1
0
Index = 11h
Index = 10h
Table J–8.
Window Start Y MSB
Window Start Y LSB
(WSYM)
(WSYL)
Data bit
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
Y Address
0
0
0
0
11
10
9
8
7
6
5
4
3
2
1
0
Index = 15h
Index = 14h
The Window Start X value to be written is calculated as follows:
Wx = desired display screen x position
Values from 0000 (hex) to 0fff (hex) may be written into the Window Start X register.
The Window Start Y value to be written is calculated as follows:
Wy = desired display screen y position
Values from 0000 (hex) to 0fff (hex) may be written into the Window Start Y register.
The values wirtten into the Window Start X and Y registers should be relative to the first displayed pixel on
the screen; i.e. (0,0).
Note that the Window Start location specified is the first location inside the window. For the cross hair cursor
or auxiliary window to be displayed, the Window Start registers must specify a point on the active display.
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP3020-135MDN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TVP3020-135PCE | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TVP3020-175MDN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
| TVP3020-175PCE | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
| TVP3020-200MDN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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