參數(shù)資料
型號(hào)： 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(yè)數(shù)： 39/98頁(yè)
文件大小： 582K
代理商： TVP3020-175
2–25
(0,0)
(31,31)
(63,63)
Figure 2–7. Common Sprite-Origin Settings
NOTE:
The programmable sprite-origin feature can be especially useful in creating
crosshair cursors and pointers. See Section 2.5.5 and Figures 2–8 and 2–9 for
more details.
2.5.4
Cursor positioning for the crosshair cursor is also done through the cursor-position (x,y) register. The
intersection of the crosshair cursor is specified by the cursor-position (x,y) register. If the thickness of the
crosshair cursor is greater than one pixel, the center of the intersection is the reference position. The
thickness of the crosshair cursor is specified by cursor-control register bits 0 and 1 (see Section 2.16.2).
The sprite-origin (x,y) register has no effect on the crosshair cursor location.
Crosshair Cursor
In order to display the crosshair cursor, cursor-control register bit 2 needs to be enabled while CCR bit 3
is used to set the desired color as shown in the following table:
CCR2
CCR3
CROSSHAIR COLOR
0
0
Crosshair not displayed
0
1
Crosshair not displayed
1
0
Cursor color 0
1
1
Cursor color 1
Cursor-control register bits 0 and 1 specify the crosshair cursor thickness (see Section 2.16.2).
The crosshair cursor is limited to being displayed within a window, which is specified by the window-start
(x,y) and window-stop (x, y) registers. Since the cursor-position (x,y) register must specify a point within the
window boundaries, it is the responsibility of the user software to ensure that the cursor-position (x,y)
register does not specify a point outside the defined window. Refer to Figure 2–8, which shows the
relationship between the different window and cursor register specifying regions.
If a full-screen crosshair cursor is desired, the window-start (x,y) registers should contain 0000 (hex) and
the window-stop (x,y) registers should be set to the last pixel location on the active screen. For the crosshair
cursor to be displayed, the window-start and window-stop registers must contain locations on the active
screen. If one wishes to temporarily remove the crosshair cursor from the screen without disabling the
function, the window-start registers can be programmed with a location off the active screen.
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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