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Número de pieza TDA8366H
Descripción I2C-bus controlled PAL/NTSC TV processor
Fabricantes NXP Semiconductors 
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INTEGRATED CIRCUITS
DATA SHEET
TDA8366
I2C-bus controlled PAL/NTSC TV
processor
Objective specification
File under Integrated Circuits, IC02
January 1995
Philips Semiconductors

1 page




TDA8366H pdf
Philips Semiconductors
I2C-bus controlled PAL/NTSC TV
processor
Objective specification
TDA8366
PINNING
SYMBOL
IFDEM1
IFDEM2
DECDIG
IFVO
SCL
SDA
DECBG
CHROMA
CVBS/Y
VP1
CVBSINT
GND1
PIPO
DECFT
CVBSEXT
BLKIN
BO
GO
RO
BCLIN
RI
GI
BI
RGBIN
LUMIN
LUMOUT
BYO
RYO
BYI
RYI
SECref
XTAL1
XTAL2
DET
VP2
CVBS/TXT
SCO
HOUT
PIN
SDIP52
QFP64
1 11
2 12
3 13
4 14
5 16
6 17
7 18
8 20
9 21
10 22
11 29
12 25
13 27
14 28
15 24
16 30
17 31
18 32
19 33
20 35
21 37
22 38
23 39
24 40
25 42
26 43
27 44
28 45
29 46
30 47
31 48
32 49
33 50
34 52
35 54
36 55
37 56
38 57
DESCRIPTION
IF demodulator tuned circuit 1
IF demodulator tuned circuit 2
decoupling digital supply
IF video output
serial clock input
serial data input/output
bandgap decoupling
chrominance input (S-VHS)
external CVBS/Y input
main supply voltage 1 (+8 V)
internal CVBS input
ground 1
picture-in-picture output
decoupling filter tuning
external CVBS input
black-current input
blue output
green output
red output
beam current limiter input
red input for insertion
green input for insertion
blue input for insertion
RGB insertion input
luminance input
luminance output
(BY) signal output
(RY) signal output
(BY) signal input
(RY) signal input
SECAM reference output
3.58 MHz crystal connection
4.43/3.58 MHz crystal connection
loop filter phase detector
horizontal oscillator supply voltage (+8 V)
CVBS/TXT output
sandcastle output
horizontal output
January 1995
5

5 Page





TDA8366H arduino
Philips Semiconductors
I2C-bus controlled PAL/NTSC TV
processor
Objective specification
TDA8366
RGB output circuit and black-current stabilization
The colour-difference signals are matrixed with the
luminance signal to obtain the RGB-signals. For the
RGB-inputs linear amplifiers have been chosen so that the
circuit is suited for signals coming from the SCART
connector. The contrast and brightness control operate on
internal and external signals.
The output signal has an amplitude of approximately 2 V
black-to-white at nominal input signals and nominal
settings of the controls.
The black current stabilization is realized by means of a
feedback from the video output amplifiers to the RGB
control circuit. The ‘black current’ of the 3 guns of the
picture tube is internally measured and stabilized. The
black level control is active during 4 lines at the end of the
vertical blanking. During the first line the leakage current is
measured and the following 3 lines the 3 guns are
adjusted to the required level. The maximum acceptable
leakage current is ±100 µA. The nominal value of the
‘black current’ is 10 µA. The ratio of the currents for the
various guns automatically tracks with the white point
adjustment so that the back-ground colour is the same as
the adjusted white point.
The input impedance of the ‘black-current’ measuring pin
is 15 k. Therefore the beam current during scan will
cause the input voltage to exceed the supply voltage. The
internal protection will start conducting so that the
excessive current is bypassed.
When the TV receiver is switched-on the black current
stabilization circuit is not active, the RGB outputs are
blanked and beam current limiting input pin is
short-circuited. Only during the measuring lines will the
outputs supply a voltage of 5 V to the video output stage
so that it can be detected if the picture tube is warming up.
These pulses are switched-on after a waiting time of
approximately 0.5 s. This ensures that the vertical
deflection is activated so that the measuring pulses are not
visible on the screen. As soon as the current supplied to
the measuring input exceeds a value of 190 µA the
stabilization circuit is activated. After a waiting time of
approximately 0.8 s the blanking and the beam current
limiting input pin are released. The remaining switch-on
behaviour of the picture is determined by the external time
constant of the beam current limiting network.
I2C-BUS SPECIFICATION
handbook, halfpage
A6 A5 A4 A3 A2 A1 A0 R/W
1 0 0 0 1 0 1 1/0
MLA743
X = don’t care.
Fig.4 Slave address (8A).
Valid subaddresses: 00 to 13; subaddress FE is reserved
for test purposes. Auto-increment mode is available for
subaddresses.
Start-up procedure
Read the status bytes until POR = 0 and send all
subaddress bytes. The horizontal output signal is
switched-on when the oscillator is calibrated. It is possible
to have the horizontal output signal available before
calibration. Then the SFM bit must be set to logic 0.
Each time before the data in the IC is refreshed, the status
bytes must be read. If POR = 1, the procedure mentioned
above must be carried out to restart the IC.
When this procedure is not followed the horizontal
frequency may be incorrect after power-up or after a
power dip.
January 1995
11

11 Page







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