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參數資料
| 型號： | TVP3010-135 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Hardware Cursor, GAMMA Correction VIP(135MHz,高/寬光標，伽馬校正，視頻接口調色板) |
| 中文描述： | 硬件光標，伽瑪校正貴賓（135MHz，高/寬光標，伽馬校正，視頻接口調色板） |
| 文件頁數： | 56/100頁 |
| 文件大?。?/td> | 571K |
| 代理商： | TVP3010-135 |
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2–42
2.16.6
These registers are used to specify the (x,y) coordinate of the upper-left corner of the crosshair-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 interval after WSYM has been written
to by the MPU.
Window-Start X and Y Registers
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.
WINDOW START X MSB
WINDOW START X LSB
(WSXM)
D4
(WSXL)
D4
Data Bit
D7
D6
D5
D3
D2
D1
D0
D7
D6
D5
D3
D2
D1
D0
X Coordinate
0
0
0
0
X11
X10
X9
X8
X7
X6
X5
X4
X3
X2
X1
X0
Index = 11h
Index = 10h
WINDOW START Y MSB
WINDOW START Y LSB
(WSYM)
D4
(WSYL)
D4
Data Bit
D7
D6
D5
D3
D2
D1
D0
D7
D6
D5
D3
D2
D1
D0
Y Coordinate
0
0
0
0
Y11
Y10
Y9
Y8
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
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 written into the window-start X and Y registers should be relative to the first displayed pixel on
the screen; i.e., (0,0).
The window-start location specified is the first location inside the window. For the crosshair cursor or
auxiliary window to be displayed, the window-start registers must specify a point on the active display.
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