參數(shù)資料
型號(hào)： TVP3010-110
廠商： Texas Instruments, Inc.
英文描述： Hardware Cursor, GAMMA Correction VIP(110MHz,高/寬光標(biāo)，伽馬校正，視頻接口調(diào)色板)
中文描述： 硬件光標(biāo)，伽瑪校正貴賓（110MHz的，高/寬光標(biāo)，伽馬校正，視頻接口調(diào)色板）
文件頁(yè)數(shù)： 44/100頁(yè)
文件大?。?/td> 571K
代理商： TVP3010-110
2–30
Color-key switching is performed according to the following equation:
color key = [(OL + CKC0)
×
(R + CKC1)
×
(G + CKC2)
×
(B + CKC3)]
⊕
CKC4
where: OL = 1
if
color-key OL/VGA low
≤
overlay or VGA (Note 23)
≤
color-key OL/VGA high
R = 1
if
color-key red low
≤
direct color (RED)
G = 1
if
color-key green low
≤
direct color (GREEN)
B = 1
if
color-key blue low
≤
direct color (BLUE)
then
if
color key = 1, overlay or VGA is displayed.
if
color key = 0, direct-color is displayed.
≤
color-key red high
≤
color-key green high
≤
color-key blue high
NOTES: 23. When the VGA port is activated (MCR2 bit 7 = 1), the OL/VGA register (low,high) color comparison is
performed on VGA data and the VGA port is color-key switched. If the VGA port is not activated (MCR2
bit 7 = 0) the comparison is performed on overlay data and overlay is color-key switched.
24. Color-key switching is supported for all direct-color multiplexing modes that have overlay capability when
doing overlay switching. When doing VGA switching, all direct-color modes are supported as long as the
multiplex ratio is 1:1. The direct-color multiplex mode is set in multiplex-control registers 1 and 2.
25. CKC0–CKC3 can be used to individually enable or disable certain colors in the comparison for maximum
flexibility. If color-key switching is not desired, CKC0–CKC3 should be set to logic 0. CKC4 is then used
to set the default for either direct color or palette graphics. The default condition at reset is CKC0 = CKC1
= CKC2 = CKC3 = logic 0 and CKC4 = logic 1. This causes the function to default to palette graphics as
required for VGA pass-through node.
26. The color-key comparison for the overlay and VGA data is performed after the read-mask and palette-page
registers so that an 8-bit comparison can be performed. This also gives the maximum flexibility to the user
in performing the color comparisons. If the overlay defined for a given mode is less than 8 bits per pixel,
the data is shifted to the LSB locations and the palette-page register fills the remaining MSB positions.
27. For those direct-color modes that have less than 8 bits per pixel of red, green, and blue direct-color data,
the data is internally shifted to the MSB positions for each color and the remaining LSB bits are filled with
logic 0s before the 8-bit comparisons are performed.
28. The windowing and color-key functions are integrated such that if either switch = 1 (windowing case, see
Section 2.6.1) or color-key = 1, palette graphics are displayed (overlay or VGA depending on multiplex-
control register 2 bit 7) instead of direct-color data. Both functions must be correctly set for proper operation.
2.7
Overscan
The TVP3010 palette provides the capability to produce a custom screen border using the overscan
function. The overscan function is controlled by general-control-register (GCR) bits 6 and 7. GCR bit 6 is
used to enable overscan, and GCR bit 7 specifies whether the overscan area is defined by the 8/6 [OVS]
terminal or by internal circuitry. The overscan color is user programmable by writing to the overscan color
red, green, and blue registers in the indirect register map. For the 8/6 [OVS] terminal to be used to control
overscan, it needs to be configured as the OVS input by setting configuration register bit 1 (CR1) to
logic 1. When OVS is configured the 8/6 [OVS] function is controlled by configuration register bit 0 (CR0),
which defaults to a 6-bit operation.
If the overscan function is enabled (GCR6 = logic 1) and the 8/6 [OVS] terminal is used to control the area
of overscan (GCR7 = logic 0), then overscan color is displayed any time that OVS is high and blank
is low
(active). Note that blank is the internal blank signal and can either be generated from VGABL or SYSBL
depending on the mode selected. If the TVP3010 internal circuitry is chosen to generate overscan
(GCR7 = logic 1), then internal vertical and horizontal sync and blank are used to define the overscan display
area. Whenever blank is active and vertical and horizontal sync are inactive, overscan is displayed.
Internally generated timing may not work with some CRT monitors.
If overscan is enabled, then the blanking pedestal is imposed on the analog outputs when OVS is high and
blank is low. If overscan is disabled, then the blanking pedestal occurs when blank is low. Blank can be either
SYSBL or VGABL depending on the state of multiplex-control register 2 bit 7.
The blank and blank references are internal signals.
相關(guān)PDF資料
PDF描述
TVP3010-135 Hardware Cursor, GAMMA Correction VIP(135MHz,高/寬光標(biāo)，伽馬校正，視頻接口調(diào)色板)
TVP3010-170 Hardware Cursor, GAMMA Correction VIP(170MHz,高/寬光標(biāo)，伽馬校正，視頻接口調(diào)色板)
TVP3010-85 Hardware Cursor, GAMMA Correction VIP(85MHz,高/寬光標(biāo)，伽馬校正，視頻接口調(diào)色板)
TVP3010C Video Interface Palette
TVP3010M Video Interface Palette
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TVP3010-110FN 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)
TVP3010-135FN 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)
TVP3010-135MGA 制造商:Rochester Electronics LLC 功能描述:- Bulk
TVP3010-135MGAB 制造商:Rochester Electronics LLC 功能描述:- Bulk
TVP3010-170FN 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)
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