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PDF TB1245N Data sheet ( Hoja de datos )
| Número de pieza | TB1245N | |
| Descripción | TOSHIBA Bi-CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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TENTATIVE
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT
SILICON MONOLITHIC
TB1245N
TB1245N
VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR
PAL / NTSC / SECAM SYSTEM COLOR TV
TB1245N that is a signal processing IC for the PAL / NTSC /
SECAM color TV system integrates video, chroma and
synchronizing signal processing circuits together in a 56pin
shrink DIP plastic package.
TB1245N incorporates a high performance picture quality
compensation circuit in the video section, an automatic PAL /
NTSC / SECAM discrimination circuit in the chroma section, and
an automatic 50 / 60 Hz discrimination circuit in the
synchronizing section. Besides a crystal oscillator that internally
generates 4.43 MHz, 3.58 MHz and M / N-PAL clock signals for
color demodulation, there is a horizontal PLL circuit built in the
IC.
The PAL / SECAM demodulation circuit which is an
adjustment-free circuit incorporates a 1H DL circuit inside for
operating the base band signal processing system.
Also, TB1245N makes it possible to set or control various
functions through the built-in I2C bus line.
Weight: 5.55 g (Typ.)
1 2001-07-26
1 page  
PIN
No.
PIN NAME
FUNCTION
7 Coincident Det.
To connect filter for detecting
presence of H. synchronizing signal
or V. synchronizing signal.
8 VDD (5 V)
VDD terminal of the LOGIC block.
Connect 5 V (Typ.) to this pin.
9 SCL
SCL terminal of I2C bus.
INTERFACE CIRCUIT
—
TB1245N
INPUT / OUTPUT
SIGNAL
—
—
—
10 SDA
SDA terminal of I2C bus.
11 Digital GND
12 B Output
13 G Output
14 R Output
15 TEXT GND
Grounding terminal of LOGIC block.
R, G, B output terminals.
Grounding terminal of TEXT block.
16 ABCL
External unicolor brightness control
terminal. Sensitivity and start point
of ABL can be set through the bus.
17 RGB-VCC (9 V)
VCC terminal of TEXT block.
Connect 9 V (Typ.) to this pin.
—
—
―
—
—
―
6.4 V at Open
―
5 2001-07-26
5 Page 
PIN
No.
PIN NAME
FUNCTION
53 Vertical Output
Output terminal of vertical ramp
signal.
INTERFACE CIRCUIT
54 V-NF
Input terminal of vertical NF signal.
55 DEF GND
56 Sync Output
Grounding terminal of DEF
(deflection) block.
Output terminal of synchronizing
signal separated by sync separator
circuit.Connect a pull-up resistor to
this pin because it is an
open-collector output type.
―
TB1245N
INPUT / OUTPUT
SIGNAL
―
11 2001-07-26
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TB1245N.PDF ] | |
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