LZ93N19 データシートの表示（PDF） - Sharp Electronics
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LZ93N19 Datasheet PDF : 11 Pages
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LZ93N19
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PIN NAME
1
CFMO
o
n
bier frame output
I
FUNCTION
A pulse to control color frame; occurs at every 4
fields in NTSC rode, recurs at every 8 fields in PAL
mode.
2
CFMI
Ic
n
Color frame input
An input pin for color frame signal. Connect to
CFMO (pin 1) in Internal Synchronous mode. Con-
nect to external color frame signal in External Syn-
chronous mode. Connect to L level when 4FSC (pin
43) is set to L level.
3
TST3
ICD
—
Test terminal 3
A pin for tests, Set open of to L level in the Normal
mode.
An output pin fw color subcarrier. The frequency of
4
Scl
o
m
Subcarrier output 1
the signal is 1/4 the 4FSC frequency (pin 43). The
signal is reset by color frame pulse CFMI (pin 2).
An output pin for color subcarrier. When the phase
of SC I (pin 4) is 180 degree, the phase of SCZ is
5
SC2
o
ul
Subcarrier output 2
90 degree in NTSC mode in PAL mode, the phase
of SC2 is 90 degree when LSW (pin 14) is Low and
270 degree when LSW is High.
6
GND
—
—
Grouding
A grouding pin.
7
WHD
o
Wide Horizontal
n
drive output
An output pin for wide horizontal drive pulse. The
pulse width is equal to that of PBLK (pin 39) and
the repetition is horizontal frequency.
8
VRI
Icsu
9
BF
o
10
BFBL
o
11
NC
—
v
Vertical reset
An input pin for resetting internal vertical counter.
The input pulse is necessary 1/2 horizontal max.
delay from vertical synchronous start point, because
VRI is counted by 2 times horizontal frequency. set
open or to H level when not resetting.
n
Burst flag
A pulse to define burst period.
At NTSC mode : holds H level.
At PAL mode : stays at L level during the blank-
n
Burst flag blanking
ing period of BF (pin 9) otherwise,
stays at H level.
—
Non connection
A pin for no use.
12 TVMD
Ic
—
TV mode
An input pin to select TV standards.
At NTSC mode : L level
At PAL mode : H level
13
LRST
Icu
u
Line switch reset
The input resets the output from LSW (pin 14). Sei
open or to H level when not used.
278
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