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參數資料
| 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轉換器) |
| 中文描述： | 220兆赫的CMOS真彩色圖形三路10位顯存，數模轉換器（三通道，10位視頻RAM的的D / A轉換器） |
| 文件頁數： | 29/36頁 |
| 文件大小： | 434K |
| 代理商： | ADV7150 |
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ADV7150
–29–
REV. A
APPE NDIX 4
MULT IPLE PALE T T E APPLICAT IONS
Palette Priority Select Inputs
T he palette priority selection inputs allow up to four separate
palette devices to be used in a single system to drive a single
monitor with subpixel resolution. T he IOR, IOG and IOB ana-
log video output signals of each device are connected together,
as shown. Signal inputs (PS0, PS1) determine on a pixel by pixel
basis which palette device drives the monitor. T his allows for
implementation of multiple windows applications with each
device acting as an independent palette. During initialization,
each device is assigned two match bits, MR16 (PS0) and MR17
(PS1) in Mode Register MR1. PS0 and PS1 inputs will select
one of the preprogrammed devices at any instant when PS0, PS1
matches MR16, MR17, respectively. PS0 and PS1 are multi-
plexed similar to the pixel data, thus allowing for subpixel resolu-
tion. T he diagrams show an example of one ADV7150 operating in
conjunction with three ADV7151’s (Pseudo-Color RAM-DACs).
Each displayed window on the monitor is driven by one of the
four devices, as determined on a pixel basis by PS0, PS1. Each
device’s analog output signals are connected together as shown.
Note: Only one palette device is selected at any particular
instant. T he analog output levels of the unselected devices will
be 0 mA.
Other applications for the palette priority function using a mini-
mum of two devices (one ADV7150 and one ADV7151) include:
Cursor Overlay on 24-Bit Graphics
Active Live Video Overlay (from Frame Grabber)
T ext/Character Generation and Overlay
DACs
IOR,
IOG,
IOB
ZO = 75
ZS = 75
(SOURCE
TERMINATION)
ZL = 75
(MONITOR)
(CABLE)
DACs
IOR, IOG, IOB
(DEVICE: 2)
(DEVICE: 1)
Multiple Devices Termination for a Single Monitor
ADV7150
ADV7151 (1)
256 x 30
RAM
256 x 30
PALETTE
PALETTE SELECT BITS
ANALOG
O/P
RGB
ANALOG
VIDEO
VIDEO TO MONITOR
PS0, PS1
256 x 30
PALETTE
RGB
ANALOG
VIDEO
RGB
ANALOG
VIDEO
ADV7151 (2)
ADV7151 (3)
R0–R7
G0–G7
B0–B7
WINDOW 1
(Pseudo-Color)
PS0=0: PS1=1
WINDOW 3
(Pseudo-Color)
PS0=1: PS1=1
MONITOR
WINDOW 2
(Pseudo-Color)
PS0=1: PS1=0
TRUE-COLOR BACKGROUND
MR16 MR17
0 0
PALETTE SELECT BITS
MR16 MR17
0 1
PALETTE SELECT BITS
MR16 MR17
1 0
PALETTE SELECT BITS
MR16 MR17
1 1
256 x 30
PALETTE
P0–P7
Multiple Devices Driving a Multiwindow Application
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7151LS110 | CAP METAL POLYPRO .22UF 630V 5% |
| ADV7151LS135 | CMOS 220 MHz Pseudo-Color Graphics Triple 10-Bit Video RAM-DAC |
| ADV7151LS170 | CMOS 220 MHz Pseudo-Color Graphics Triple 10-Bit Video RAM-DAC |
| ADV7151LS220 | CAP METAL POLYPRO .24UF 630V 3% |
| ADV7151LS85 | CAP METAL POLYPRO .24UF 630V 5% |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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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