AN5195K PANASONIC [Panasonic Semiconductor], AN5195K Datasheet - Page 17

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AN5195K

Manufacturer Part Number
AN5195K
Description
Single chip IC for PAL/NTSC color TV (built-in I2C bus interface)
Manufacturer
PANASONIC [Panasonic Semiconductor]
Datasheet
ICs for TV
Pin No.
Terminal Equivalent Circuits (continued)
18
19
20
21
From
microcomputer
Contrast
control
2.3 V
2.3 V
60 k
6.3 V
(V
I
I
1
2
1 M
100 A
CC2
1 V
Data
800 A
800 A
)
100 A
21
6.9 k
5.9 V
60 k
Equivalent circuit
10 k
18
7.1 k
1 k
100 k
12 k
0.022 F
Z
100 A
O
30 k
ACK
To
chroma
circuit
6.9 k
50 A
7.1 k
10 k
12 k
50 A
To contrast
circuit
6.9
k
30 k
20
2.8 V
To logic
2.1 V
9 V
(V
circuit
100 k
CC1
4.7 F
3.5 V
5 V
(V
5 V
(V
1.7 V
)
CC3
CC3
)
)
Horizontal sync. detection pin:
• Phase of horizontal synchronizing
• Pin 18 is low at out of phase.
• In asynchronous state, color control
• Pay attention to impedance when
• HV
GND:
• RGB circuit
• DAC I
ACL pin:
• Contrast can be reduced when DC
• Service SW
Note) When pin 20 is used as ACL, set
I
2
signal and horizontal output pulse is
detected and outputted.
becomes min. and chroma output
disappears.
voltage of pin18 is used by micro-
computer (Z
When pin 56 is high: I
When pin 56 is low: I
voltage of pin 20 is decreased from
the outside.
C bus data input pin:
SYNC
design must be done not to become
V
also as the service SW.
20
2
C circuit
period
0.9 V so that pin 20 operates
Description
O
500 k is required)
2
Pin 56
H-out
Pin 46
HV sync. in
1
on
on
AN5195K-C
at asynchronous
at synchronous
approx. 0.3 V
approx. 6 V
approx. 3 V
DC (V)
(pulse)
DC
DC
AC
17

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