參數(shù)資料
型號(hào): TVP3026-220APCE
廠商: Texas Instruments, Inc.
英文描述: Video Interface Palette
中文描述: 視頻接口面板
文件頁(yè)數(shù): 59/107頁(yè)
文件大小: 513K
代理商: TVP3026-220APCE
2–45
2.15.6
The color-key control register definition is listed in Table 2–31.
Color-Key Control Register (Index 0x38, Access R/W, Default 0x00)
Table 2–31. Color-Key Control Register
BIT NAME
VALUES
DESCRIPTION
000: 1
×
zoom
001: 2
×
zoom
010: 4
×
zoom
011: 8
×
zoom
100: 16
×
zoom
101: 32
×
zoom
0: True function
H i
Horizontal zoom factor. When other than 1
×
zoom is selected, the internal pixel
multiplier is configured so that it loads pixel data at a reduced rate Also the
multi lier is configured so that it loads ixel data at a reduced rate. Also, the
RCLK frequency must be modified to facilitate the new reduced rate. The new
RCLK frequency should be chosen as the old RCLK frequency divided by the
h i
t l
zoom factor. The horizontal zoom function applies only to the pixel port
(P63–P0) data VGA data cannot be zoomed
(P63–P0) data. VGA data cannot be zoomed.
t l
t d th i t
l i
CKC7 CKC5
CKC7–CKC5
Color key function select CKC4 controls the polarity of the color key function
Color-key-function select. CKC4 controls the polarity of the color-key function.
See equation (12) in subsection 2.8.2, Color-Key Switching
CKC4
1: Complementary
(default)
CKC3
0: Disable
compare
(default)
Blue-compare enable. CKC3 enables or disables the direct-color blue field
comparison. See equation (12) in subsection 2.8.2, Color-Key Switching
1: Enable compare
CKC2
0: Disable
compare
(default)
Green-compare enable. This is used to enable or disable the direct-color green
field comparison. See equation (12) in subsection 2.8.2, Color-Key Switching
1: Enable compare
CKC1
0: Disable
compare
(default)
Red-compare enable. This is used to enable or disable the direct-color red field
comparison. See eq
(
)
1: Enable compare
y
g
CKC0
0: Disable
compare
(default)
Overlay compare enable. This is used to enable or disable the overlay field
comparison. See equation (12) in subsection 2.8.2, Color-Key Switching
1: Enable compare
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