LZ95B25
DESCRIPTION
The
is a CMOS subcarrier signal gen-
erator LSI which provides
pulses for
color
video camera, in
LSI (LZ95D52/M)
FEATURES
combination
.
between
PAL and
systems
. Included phase comparator circuit
q
Single + 5 V power supply
q
Package : 18-pin MFP(MFPO1 8-P)
RI
Subcarrier Generator
for CCD
PIN CONNECTIONS
18-PIN
TOP VIEW
1
0
18
2
17 GNO
4FSI 3
16 CPI
4FS0 4
15 SCHD
TST
I
5
14 RPI
6
13 CFMI
SC2
7
12 TST3
TST2 8
11 CPCH
GND 9
10 EOO
Vcc GND CPI SCHD RPI CFMI
CPCH EOO
TVM TVM2 4FSI 4FS0
SC2 TST2 GNO
`In the
of
by device
sheets SHARP takes no
any defects
in
any of WARPs devices, shorn
SHARP
of
device
anv SHARPs device"
299
ABSOLUTE MAXIMUM RATINGS
SYMBOL
RATING
UNIT
Supply voltage
Vcc
0.3
to
v
Input voltage
VI
to
+
0.3
v
Output voltage
Vo
0.3
to
+ 0.3
v
Operating temperature
Topr
20
to
`c
Storage temperature
Tstg
55 to +150
"c
DC CHARACTERISTICS
T a = 1 0 t o
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
NOTE
Input Low voltage
1.5
v
1
Input High voltage
3.5
v
v
1.0
2
Input Low current
Vl=o v
60
V I =
4
Input High current
V I =
8.0
60
5
1
4.0
v
6
Output High voltage
I
4.0
v
7
4,0
v
8
= 4
0.4
v
6
Output Low voltage
= 2
v
7
v0L3
v
8
Leak output current
Ioz
High-Z
1.0
NOTES :
1.
Applied to inputs (IC,
2. Applied to inputs (lCD,
3. Applied to input
4. Applied to inputs
5. Applied to input (lCD).
6. Applied to outputs (O,
7. Applied to output
Applied to
output
300
SYMBOL
I POLARITY I
PIN NAME
FUNCTION
_..
TVM
Icu
TV
mode 1
These input pins to select TV standards.
--
2
TVM2
--
TV
mode 2
An input pin for the signal 4 times the color
carrier frequency.
3
4FSI
input
At NTSC mode
: 14.31818 MHz
At PAL mode
: 17.734475 MHz
At SECAM mode : 17.625 MHz
4
4FS0
Osco
Clock output
The output is the inverse 4FSI (pin 4).
5
TSTI
Test pin 1
A test pin, Set open or to L level in the Normal
--
mode,
An output pin
color
The frequency of
6
0 2 M
output 1
the signals is 1/4 the 4FSI (pin 3). The signal is
reset by color frame pulse
(pin 13).
An output pin for color
When the phase
of
(pin 4) is 180 degree, the phase of
is
7
SC2
0 2 M
output 2
80 degree in NTSC
in PAL mode, the phase
of SC2 is
degree when LSW
is L level
and 270 degree when LSW is H level. The SC is
same as the phase of SC I in SECAM mode.
8
TST2
ICD
Test pin 2
A test pin. Set open or to L level in the Normal
--
mode.
9
GND
--
--
Ground
A grounding pin.
Phase comparator output for input signals RPI (pin
14) and
(pin 16). When
is advanced, output
Phase comparator
10
TO
is Low level. When
is delayed, output is High
--
output
level. When phases are equal, the terminal
ance is High.
comparator comparates rising
edge of
The CPCH input pin switches the polarity of RPI
(pin
When CPCH is L level,
comparator
11
CPCH
--
Polarity select input
comparates rising edge of
When CPCH is H
level, phase comparator comparates falling edge
of
12
TST3
Test pin 3
A test pin. Set open or to L level in the Normal
mode.
13
Color frame input
An input pin for color frame signal; Connect to
CFMO
301
SYMBOL
POLARITY
PIN NAME
FUNCTION
An input pin for the reference horizontal signal to
14
RPI
Horizontal comparison
ICD
the phase comparator. Connect to HD
--
input
when comparator is used. The polarity of RPI se-
lects with CPCH (pin 11),
A horizontal synchronous pulse obtained by dividing
4FSI (pin 3).
At NTSC mode
: dividing into 1/910
At PAL mode
: dividing into 1/1 135 4FSI
15
SCHD
o
HD
ordinarily and dividing into
137 4FSI during one ho-
rizon tal period within the V
blanking.
At SECAM mode : dividing into 1/1 128
Horizontal comparison
An input pin for comparison horizontal signal to the
16
CPI
input
phase comparator. Connect to SCHD (pin 15) when
comparator is used,
17
GND
--
--
Ground
A grounding pin.
18
.
Power supply
Supply +5 V power.
Icu
:
Input pin (CMOS level with built-in pull-up resistor).
ICD
: Input pin (CMOS level with built-in pull-up resistor).
o
:
Output pin,
02M : Output pin.
TO
: Output
output).
OSCI : Input pin for oscillation.
OSCO : Output pin for oscillation.
302
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