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PDF TB1227CNG Data sheet ( Hoja de datos )
| Número de pieza | TB1227CNG | |
| Descripción | Processor Miscellaneous | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TENTATIVE
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT
SILICON MONOLITHIC
TB1227CNG
TB1227CNG
VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC
/ SECAM SYSTEM COLOR TV
TB1227CNG 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 56-pin
shrink DIP plastic package.
TB1227CNG 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 / 60Hz discrimination circuit in the
synchronizing section. Besides a crystal oscillator that internally
generates 4.43MHz, 3.58MHz and M / N-PAL clock signals for
color demodulation, there is a horizontal PLL circuit built in the
Weight: 5.55 g (typ.)
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, TB1227CNG makes it possible to set or control various functions through the built-in I2C bus line.
FEATURES
Video section
• Built-in trap filter
• Black expansion circuit
• Variable DC regeneration rate
• Y delay line
• Sharpness control by aperture control
• γ correction
• VSM output
Chroma section
• Built-in 1H Delay circuit
• PAL / SECAM base band demodulation system
• One crystal color demodulation circuit
(4.43MHz, 3.58MHz, M / N-PAL)
• Automatic system discrimination, system forced mode
• 1H delay line also serves as comb filter in NTSC demodulation
• Built-in band-pass filter, SECAM bell filter
• Color limiter circuit
• Fsc output
Synchronizing deflecting section
• Built-in horizontal VCO resonator
• Adjustment-free horizontal / vertical oscillation by count-down circuit
• Double AFC circuit
• Vertical frequency automatic discrimination circuit
• Horizontal / vertical holding adjustment
• Vertical ramp output
• Vertical amplitude adjustment
• Vertical linearity / S-shaped curve adjustment
1
2004-05-24
1 page  
TB1227CNG
PIN
No.
PIN NAME
FUNCTION
INTERFACE CIRCUIT
7 Coincident Det.
To connect filter for detecting
presence of H. synchronizing signal
or V. synchronizing signal.
8 VDD (5V)
VDD terminal of the LOGIC block.
Connect 5V (Typ.) to this pin.
—
INPUT / OUTPUT
SIGNAL
—
—
9 SCL
SCL terminal of I2C bus.
—
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 (9V)
VCC terminal of TEXT block.
Connect 9V (Typ.) to this pin.
—
—
—
―
—
—
6.4V at Open
——
5 2004-05-24
5 Page 
PIN
No.
PIN NAME
53 Vertical Output
FUNCTION
Output terminal of vertical ramp
signal.
INTERFACE CIRCUIT
TB1227CNG
INPUT / OUTPUT
SIGNAL
54 V-NF
55 DEF GND
Input terminal of vertical NF signal.
Grounding terminal of DEF
(deflection) block.
—
—
56 V BLK Output
Output terminal of V blanking.
11 2004-05-24
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TB1227CNG.PDF ] | |
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