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參數(shù)資料
| 型號： | TVP3020-175 |
| 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)： | 53/98頁 |
| 文件大?。?/td> | 582K |
| 代理商： | TVP3020-175 |
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2–39
2.16.3
These registers are used to specify the (x,y) coordinate of the intersection of the crosshair cursor. They are
also used in conjunction with the sprite-origin register to specify the location of the 64 x 64 cursor area (see
Section 2.5.3). The cursor-position X register is made up of the cursor-position X LSB (CPXL) and the
cursor-position X MSB (CPXM); the cursor-position Y register is made up of the cursor-position Y LSB
(CPYL) and the cursor-position Y MSB (CPYM). All registers are initialized to 00 (hex) and can be written
to or read from by the MPU at any time. The cursor position is not updated until the vertical retrace interval
after CPYM has been written to by the MPU.
Cursor-Position (x, y) Register
CPXL and CPXM are cascaded to form a 12-bit cursor-position X register. Similarly, CPYL and CPYM are
cascaded to form a 12-bit cursor-position Y register. Bits D4–D7 of CPXM and CPYM are always a logic
zero.
CURSOR-POSITION X MSB
(CPXM)
D6
D5
D4
CURSOR-POSITION X LSB
(CPXL)
D6
D5
D4
Data Bit
D7
D3
D2
D1
D0
D7
D3
D2
D1
D0
X Position
0
0
0
0
X11
X10
X9
X8
X7
X6
X5
X4
X3
X2
X1
X0
Index = 01h
Index = 00h
CURSOR-POSITION Y MSB
(CPYM)
D6
D5
D4
CURSOR-POSITION Y LSB
(CPYL)
D6
D5
D4
Data Bit
D7
D3
D2
D1
D0
D7
D3
D2
D1
D0
Y Position
0
0
0
0
Y11
Y10
Y9
Y8
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Index = 03h
Index = 02h
The cursor-position X value to be written is calculated as follows:
Cx = desired display screen x position
Values from 0000 (hex) to 0fff (hex) may be written into the cursor-position X register.
The cursor-position Y value to be written is calculated as follows:
Cy = desired display screen y position
Values from 0000 (hex) to 0fff (hex) may be written into the cursor-position Y register.
The values written into the cursor-position X and Y registers should be relative to the first displayed pixel
on the screen, i.e., (0,0).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP3020-135 | Video Interface PALETTE(視頻接口調(diào)色器) |
| TVP3025-135 | Video Interface PALETTE(三PLL，視頻接口調(diào)色器) |
| TVP3025-175 | Video Interface PALETTE(三PLL，視頻接口調(diào)色器) |
| TVP3030-175 | Video Interface PALETTE Exract(1600×1200，24位真彩色視頻接口調(diào)色器) |
| TVP3030-220 | Video Interface PALETTE Exract(1600×1200，24位真彩色視頻接口調(diào)色器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 |
| TVP3020-200PCE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video DAC with Color Palette (RAMDAC) |
| TVP3020-220MDN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
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