參數(shù)資料
型號(hào)： MAX7430
廠商： Maxim Integrated Products, Inc.
英文描述： Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125
中文描述： 標(biāo)準(zhǔn)清晰度、視頻重建濾波器及緩沖器
文件頁(yè)數(shù)： 14/21頁(yè)
文件大?。?/td> 444K
代理商： MAX7430
M
Standard Definition Video Reconstruction
Filters and Buffers
14
______________________________________________________________________________________
When processing composite video set the clamp level to
+1V (CLEVEL = 0). Use the MAX7430 to process two
synchronous composite signals simultaneously. Use the
MAX7432 to process three synchronous composite sig-
nals simultaneously.
Y/C Video Filtering
The MAX7430 is ideally suited for processing S-Video (Y/C)
signals (Figure 10). Ensure that IN1_ filters the signal that
contains the sync information (Y) since the clamping on
IN2_ is internally controlled by the master channel (IN1_)
sync. Set the clamp level for IN1_ to +1V (CLEVEL1 = 0)
and set the clamp level for IN2_ to +1.5V (CLEVEL2 = 1).
Use two MAX7428s for Y/C video filtering. Since only the
Y signal contains the sync, a typical Y/C video-filtering
application requires a master-slave configuration of the
SYNCIO. The MAX7428 processing the Y signal should
have SYNCIO configured as an output, which in turn dri-
ves the SYNCIO of the second MAX7428, processing the
C signal that has its SYNCIO configured as an input
(Figure 11). Clamping level for the Y signal should be set
for +1V (CLEVEL = 0), and clamping level for the C sig-
nal should be set for +1.5V (CLEVEL = 1). Use the
MAX7432 to filter one Y/C and one composite video sig-
nal that are synchronous.
Component Video (RGB
or Y P
b
P
r
) Filtering
Component video consists of three separate signals.
Typically the three signals are separate red, green, and
blue (RGB) signals or Y (luma) and two color difference
signals: B-Y (P
b
) which is blue minus luma and R-Y (P
r
),
which is red minus luma. Sync information is included
with the Y signal of Y P
b
P
r
component video, or in the
case of RGB, sync is usually carried on the G or on a
separate H sync line. The MAX7432 is ideally suited for
filtering component video signals. Ensure that the sync
signal (Y for Y P
b
P
r
signals and usually G for RGB sig-
nals) is filtered by IN1_ since IN2_ and IN3_ are inter-
nally synced to IN1_. Set the clamp level for IN1_ to
+1V (CLEVEL1 = 0) and set the clamp levels for IN2_
and IN3_ to +1.5V (CLEVEL2, 3 = 1) for Y P
b
P
r
filtering
(Figure 12) and set all clamp levels to 1V (CLEVEL_ =
0) for RGB filtering (Figure 13). A Y P
b
P
r
component
video-filter application requires three MAX7428s with
SYNCIO master-slave configuration. The MAX7428 pro-
cessing the Y signal has its SYNCIO configured as an
output, which in turn drives the SYNCIO inputs of the
other MAX7428s (Figure 14). For RGB video signal fil-
tering with a separate horizontal sync signal, configure
all MAX7428s for SYNCIO as an input (Figure 15).
t
WAIT
t
T
t
T
t
1
t
1
t
P
t
1
t
1
t
1
t
0
A
B
C D
H
t
P
t
P
READS 1ST BIT (LSB)
A:
μ
P WILL RELEASE BUS BY TIME A
B:
μ
P CAN START READING BIT AT TIME B
C:
μ
P HAS UNTIL TIME C TO FINISH READING BIT
D: DEVICE WILL RELEASE BUS BY TIME D
NOTE:
TIME A, B, C, D ARE REFERENCED TO t
0
.
READS 2ND BIT
REPEAT TO READ
6 MORE BITS
0 OR 1
0 OR 1
t
0
A
B
C D
t
O
Figure 8. Read Timing Diagram
DATA: 1***000
t
WAIT
t
T
t
1
t
T
t
1
t
1
t
1
t
0
t
0
t
0
t
0
t
0
t
0
LSB
MSB
Figure 9. Broadcast Timing Diagram
相關(guān)PDF資料
PDF描述
MAX7432 Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 20-LCCC -55 to 125
MAX7432EUD Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125
MAX7428EKA-T Standard Definition Video Reconstruction Filters and Buffers
MAX743CWE Dual-Output, Switch-Mode Regulator(+5V to +-15V or +-12V)
MAX743CPE Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CFP -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX7430EUB 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
MAX7430EUB+ 功能描述:視頻 IC Standard Def Video Reconstruction Filtr RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
MAX7430EUB+T 功能描述:視頻 IC Standard Def Video Reconstruction Filtr RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
MAX7430EUB-T 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
MAX7432AEUD 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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