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參數(shù)資料
| 型號(hào)： | LC74785 |
| 元件分類： | 畫面疊加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, SDIP-24 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大小： | 266K |
| 代理商： | LC74785 |
No. 5520-7/24
LC74785, LC74785M
Figure 4 Transferring caption data from the LC74785/M to the decoder LSI (microcontroller): Method 1
(Basic LC74785/M usage)
Note:
When
extracting
closed
caption
character
data
when
MOD1
is
high
(NTSC-TV),
applications
must
determine
whether
the
current
fiel
d
is
odd
or
even
by
checking
the
signal
level
output
from
the
SYNC
JDG
pin
(with
SEL2
set
high)
when
a
falling
edge
is
detected
on
LN21.
A
pulse
is
output
at
line
21
in
even
fields
when
MOD1
is
low.
A
pulse
is
output
at
line
21
in
both
fields
when
MOD1
is
High.
Caption
data
is
transferred
to
the
data
output
buffer.
High-impedance
The
previous
data
is
output.
The
16
bits
of
caption
data
is
output
LSB
first
in
synchronization
with
SCLK
falling
edges.
CS2
is
switched
from
high
to
low
after
the
decoder
LSI
(microcontroller)
detects
a
falling
edge
on
LN21.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LC74785M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74786 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
| LC74786-9606-E | 制造商:ON Semiconductor 功能描述:ON-SCREEN DISPLAY CONTROL - Ammo Pack |
| LC74786JM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
| LC74786M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
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