LZ93N19 Просмотр технического описания (PDF) - Sharp Electronics
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LZ93N19 Datasheet PDF : 11 Pages
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LZ93N19
PIN
~~
SYMBOL
1/0 POLARITY
PfN NAME
37
BCP I
o
Optical black
n
clamp pulse 1
38
BCP2
o
39
PBLK
o
40
I-IG I
o
Optical black
n
clamp pulse 2
Pre-blanking pulse
n
output
l-u
Line index pulse 1
41
HG2
o
N
Line index pulse 2
42 WBLK
o
n
Wide blanking pulse
43
4FSC
Ic
N
4FSC input
44
TSTI
ICD
—
Test terminal 1
Ic : Input pin (CMOS level).
ICU : Input pin (CMOS level with pull-up resistor).
ICD : Input pin (CMOS level with pull-down resistor).
ICSU : Schmiti-trigger Input pin (CMOS level with pull-up resistor)
o : Output pin.
TO : Tri-state output pin.
FUNCTION
A pulse to clamp the optical black signal. This pulse
is continuous at horizontal cycle when CPMD (pin
25) and CPBL (pin 36) are Low. men CPMD is High
and CPBL is Low, output stays Low during the ab-
sence of effective pixels within the Vertical blank-
ing, otherwise is continuous at horizontal cycle.
BCP2 is h m as BCPI (pin 37) except that BCP2
is delayed by 900 ns from BCP 1.
Equivalent to CBLK (pin 16) pulse except for shorter
pulse width with cut-off trailing edge.
The pulse is used in color separator. The signal
switches H and L at every line. It resets at the
14th line when in NTSC, and at the 9th line when
in PAL mode.
The pulse is used in color separator. The signal
switches H and L at every line. It resets at the
277th line when in NTSC, and at the 322th line
when in PAL mode.
Equivalent to CBLK (pin 16) except that its pulse
width is wider than that of CBLK.
An input pin for the signal 4 times the color sub-
carrier frequeny.
At NTSC mode : 14,318180 MHz
At PAL mode : 17.734475 MHz
Connect to L level, when SCI (pin 4) and SC2 (pin
5) signals are not required.
A pin for tests. Set open or to L level in the Normal
mode.
281
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