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參數(shù)資料
| 型號： | ADV7150 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | CMOS 220 MHz True-Color Graphics Triple 10-Bit Video RAM-DAC(三通道,10位視頻RAM-D/A轉(zhuǎn)換器) |
| 中文描述： | 220兆赫的CMOS真彩色圖形三路10位顯存，數(shù)模轉(zhuǎn)換器（三通道，10位視頻RAM的的D / A轉(zhuǎn)換器） |
| 文件頁數(shù)： | 16/36頁 |
| 文件大?。?/td> | 434K |
| 代理商： | ADV7150 |
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ADV7150
–16–
REV. A
15-Bit “ Gamma” T rue Color
(CR24, CR25, CR26, CR27 = 0, 0, 1, 1 or 1, 0, 1, 1 and
MR11 = 1)
T he part is set to 15-bit T rue-Color operation. T he pixel port
accepts 15-bits of color data which is mapped to the 5 LSBs of
each of the red, green and blue palettes of the Look-Up T able
RAM. T he Look-Up T able is configured as a 32 location by
30 bits deep RAM (10 bits each for Red, Green and Blue). T he
output of the RAM drives the DACs with 30-bit data (10 bits
each for Red, Green and Blue).
10
10-BIT
RED DAC
10-BIT
BLUE DAC
RED
32 x 10
GREEN
32 x 10
BLUE
32 x 10
5
10-BIT
GREEN DAC
10
10
5
5
RED
OUT
GREEN
OUT
BLUE
OUT
15-BIT
COLOR DATA
15-BIT TO 30-BIT
LOOK-UP TABLE
30-BIT
COLOR DATA
ANALOG VIDEO
OUTPUTS
Figure 23. 15-Bit to 30-Bit True-Color Configuration
T his mode allows for the display of 15-bit, Gamma-Corrected
T rue-Color Images.
15-Bit “ Standard” T rue Color
(CR24, CR25, CR26, CR27 = 0, 0, 1, 1 or 1, 0, 1, 1 and
MR11 = 0)
T he part is set to 15-bit T rue-Color operation. T he pixel port
accepts 15 bits of color data which is mapped to the 5 LSBs of
each of the red, green and blue palettes of the Look-Up T able
RAM. T he Look-Up T able is configured as a 32 location by
24 bits deep RAM (8 bits each for Red, Green and Blue). T he
output of the RAM drives the DACs with 24-bit data (8 bits
each for Red, Green and Blue).
8
8-BIT
RED DAC
8-BIT
BLUE DAC
RED
32 x 8
GREEN
32 x 8
BLUE
32 x 8
5
8-BIT
GREEN DAC
8
8
5
5
RED
OUT
GREEN
OUT
BLUE
OUT
15-BIT
COLOR DATA
15-BIT TO 24-BIT
LOOK-UP TABLE
24-BIT
COLOR DATA
ANALOG VIDEO
OUTPUTS
Figure 24. 15-Bit to 24-Bit True-Color Configuration
R4
R3
R2
R1
R0
x
x
x
G1
G0
G4
x
G3
G2
x
x
x
x
x
B4
B3
B2
B1
B0
PIXEL
INPUT
DATA
LOCATION "0"
LOCATION "31"
256 x 10
RAM
(RED LUT)
10
TO
RED
DAC
0
0
0
R4
R3
R2
R1
R0
LOCATION "0"
LOCATION "31"
256 x 10
RAM
(GREEN LUT)
10
TO
GREEN
DAC
0
0
0
G4
G3
G2
G1
G0
LOCATION "0"
LOCATION "31"
256 x 10
RAM
(BLUE LUT)
10
TO
BLUE
DAC
0
0
0
B4
B3
B2
B1
B0
5
5
5
PIN
ASSIGN-
MENTS
DATA
LATCHED
TO
PIXEL
PORT
DATA LATCHES
FIRST 32
LOCATIONS
OF RAM
DATA
INTERNALLY
SHIFTED
TO 5 LSBS
B5
B4
B3
B2
B1
B0
x
x
x
x
x
x
x
x
B6
B7
G6
G5
G4
G3
G2
G1
G0
R6
R5
R4
R3
R2
R1
R0
R4
R3
R2
R1
R0
G4
G3
G2
x
G1
G0
B4
B3
B2
B1
B0
G7
R7
Figure 25. 15-Bit True-Color Mapping Using R3–R7,
G3–G7 and B3–B7
T his mode allows for the display of 15-bit T rue-Color Images.
PIX E L PORT MAPPING
T he pixel data to the ADV7150 is automatically mapped in the
parts pixel port as determined by the pixel data mode pro-
grammed (Bits CR24–CR27 of Command Register 2).
Pixel data in the 24-bit T rue-Color modes is directly mapped to
the 24 color inputs R0–R7, G0–G7 and B0–B7.
T here are three modes of operation for 8-bit Pseudo Color.
Each mode maps the input pixel data differently. Data can be
input one of the three color channels, R0–R7 or G0–G7 or
B0–B7.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7150KS110 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADV7150LS110 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS 220 MHz True-Color Graphics Triple 10-Bit Video RAM-DAC |
| ADV7150LS135 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADV7150LS170 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADV7150LS220 | 制造商:Analog Devices 功能描述: |
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