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參數資料
| 型號： | ADV7152LS170 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顯示控制器 |
| 英文描述： | CMOS 220 MHz True-Color Graphics Triple 10-Bit Video RAM-DAC |
| 中文描述： | PALETTE-DAC DSPL CTLR, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數： | 14/32頁 |
| 文件大小： | 454K |
| 代理商： | ADV7152LS170 |
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ADV7152
–14–
REV. B
T his mode allows for the display of 256 simultaneous colors out
of a total palette of millions of addressable colors.
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
RED
32 x 10
GREEN
32 x 10
BLUE
32 x 10
10-BIT
GREEN DAC
10
10
5
15-BIT
PIXEL DATA
15-BIT TO 30-BIT
LOOK-UP-TABLE
30-BIT
COLOR DATA
ANALOG VIDEO
OUTPUTS
RED
OUT
GREEN
OUT
BLUE
OUT
10-BIT
BLUE DAC
10-BIT
RED DAC
5
5
Figure 21. 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 out-
put of the RAM drives the DACs with 24-bit data (8 bits each
for Red, Green and Blue).
8
RED
32 x 8
GREEN
32 x 8
BLUE
32 x 8
8-BIT
GREEN DAC
8
8
5
15-BIT
PIXEL DATA
15-BIT TO 24-BIT
LOOK-UP TABLE
24-BIT
COLOR DATA
ANALOG VIDEO
OUTPUTS
RED
OUT
GREEN
OUT
BLUE
OUT
8-BIT
BLUE DAC
8-BIT
RED DAC
5
5
Figure 22. 15-Bit to 24-Bit True-Color Configuration
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 ADV7152 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.
PIXEL
DATA
PIN
ASSIGN-
MENTS
DATA
LATCHED
TO
PIXEL
PORT
DATA LATCHES
LFIRST 32
OF RAM
DATA
INSHIFTED
TO 5 LSBS
B7
B6
B5
B4
B3
B2
B1
B0
10
TO
BLUE
DAC
0
0
0
B4
B3
B2
B1
B0
B4
B3
B2
B1
B0
x
x
x
x
x
x
B4
B3
B2
B1
B0
LOCATION "0"
LOCATION "31"
256 x 10 RAM
(BLUE LUT)
TO
RED
DAC
R7
R6
R5
R4
R3
R2
R1
R0
10
0
0
0
R4
R3
R2
R1
R0
R4
R3
R2
R1
R0
x
x
x
256 x 10 RAM
(RED LUT)
LOCATION "0"
LOCATION "31"
x
x
x
R4
R3
R2
R1
R0
TO
GREEN
DAC
G4
G3
G2
G1
G0
G7
G6
G5
G4
G3
G2
G1
G0
10
0
0
0
G4
G3
G2
G1
G0
x
x
x
x
x
x
G4
G3
G2
G1
G0
256 x 10 RAM
(GREEN LUT)
LOCATION "0"
LOCATION "31"
5
5
5
Figure 23. 15-Bit True-Color Mapping Using R3–R7, G3–G7
and B3–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.
T he part has two modes of operation for 15-bit T rue Color. In
the first mode, data is input to the device over the red, green
and blue channel (R3–R7, G3–G7 and B3–B7) and is internally
mapped to locations 0 to 31 of the Look-Up T able (LUT ) ac-
cording to Figure 23. In the second mode, data is input to the
device over just two of the color ports, red and green (R0–R7
and G0–G6) and is internally mapped to LUT locations 0 to 31
according to Figure 24. (Note: Data on unused pixel inputs is
ignored.)
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7152LS220 | CMOS 220 MHz True-Color Graphics Triple 10-Bit Video RAM-DAC |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADV7152LS220 | 制造商:Analog Devices 功能描述: 制造商:Analog Devices 功能描述:PALETTE-DAC DSPL CTLR, PQFP100 |
| ADV7152LS85 | 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 |
| ADV7160 | 制造商:AD 制造商全稱:Analog Devices 功能描述:96-Bit, 220 MHz True-Color Video RAM-DAC |
| ADV7160KS140 | 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述:220 MHZ VIDEO RAM DAC I.C. - Bulk |
| ADV7160KS170 | 制造商:Analog Devices 功能描述:DAC 3-CH Segment 10-bit 160-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:220 MHZ VIDEO RAM DAC I.C. - Bulk |
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