参数资料
型号: LC7441NE
元件分类: 画面叠加
英文描述: PICTURE-IN-PICTURE IC, PQFP64
封装: QIP-64
文件页数: 20/20页
文件大小: 410K
代理商: LC7441NE
LC7441N, 7441NE
No.3941–9/20
Function Description
NTSC/PAL
NTSC/PAL should be tied HIGH for NTSC, and LOW
for PAL.
TV/VCR
TV/VCR should be tied HIGH for television mode, and
LOW for VCR mode. The differences between the two
modes are shown in the following table and figure.
r
e
t
e
m
a
r
a
P)
H
G
I
H
s
i
R
C
V
/
V
T
(
n
o
i
s
i
v
e
l
e
T
)
W
O
L
s
i
R
C
V
/
V
T
(
R
C
V
y
t
i
r
a
l
o
p
c
n
y
s
l
a
c
i
t
r
e
v
d
n
a
l
a
t
n
o
z
i
r
o
H
y
t
i
r
a
l
o
p
t
u
p
t
u
o
r
e
t
r
e
v
n
o
c
A
/
D
l
a
n
g
i
s
-
Y
e
m
a
r
f
l
a
c
i
t
r
e
v
t
u
p
t
u
o
U
K
A
W
t
u
p
t
u
o
r
e
t
r
e
v
n
o
c
A
/
D
d
n
a
U
K
A
W
,
T
U
O
K
g
n
i
m
i
t
y
l
s
u
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n
a
t
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m
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O
s
n
8
2
5
d
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y
a
l
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d
U
K
A
W
d
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K
Note
The shaded D/A converter outputs indicate frame data. t1=132ns, t2=396ns, t3=528ns, t4=176ns, t5=308ns, t6=352ns,
t7=220ns, t8=616ns, and t9=484ns
A/D Converter Interface
The PIP controller interfaces with an LC7480 multiplex-
ing A/D converter using the AD0 to AD5 and VREF
inputs and CLAMPAD, YSW, RSW, BSW and ADCLK
outputs. The LC7480 converts the Y, R – Y and B – Y
video signals into 6-bit digital data which is input to the
PIP on AD0 to AD5. YSW, RSW and BSW control the
LC7480 input multiplexer. The conversion sequence is Y,
R – Y, Y, B – Y, as shown in the following figure. The
conversion frequencies are shown in the following table.
The LC7441 and LC7480 should be mounted as closely
as possible and care taken with the PCB layout because
of the high signal frequencies.
相关PDF资料
PDF描述
LC7442 PICTURE-IN-PICTURE IC, PDIP64
LC7442E PICTURE-IN-PICTURE IC, PQFP64
LC7455A SPECIALTY CONSUMER CIRCUIT, PDIP16
LC7455M SPECIALTY CONSUMER CIRCUIT, PDSO18
LC7456A SPECIALTY CONSUMER CIRCUIT, PDIP16
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