15
6-6. Deflection Processor
I401 TDA9111 is an SGS monolithic integrated circuit assembled in a 32 pins shrunk dual in line plastic
package.
I401 controls all the function related to the horizontal and vertical deflection in a multi-sync monitor.
As can be seen in the block diagram, I401 includes the following function:
Auto-sync and auto-processing for positive or negative H. /V. sync polarities on pin 1-2.
East/West pincushion signal processing on pin 24.
B
+
control, on pin14-17, 28.
H.PLL lock/unlock identification on pin 8 and safety blanking output on pin12.
X-ray protection is on pin 25.
I401 combined with I330 (TDA8172)which is a vertical booster to drive the vertical deflection yoke.
6-7. Pin -Out Description for SGS TDA9109 (I401)
Pin
No
Name Function
1 H-SYNC TTL Horizontal Sync Input
2 V-SYNC TTL Vertical Sync Input
3 HLOCKOUT First PLL Lock/Unlock Output (0V unlock -5V locked)
4 PLL2C Second PLL Loop Filter
5 Co Horizontal Oscillator Capacitor
6 Ro Horizontal Oscillator Resistor
7 PLL1-F First PLL Loop Filter
8 HLOCK-CAP First PLL Lock /Unlock Time Constant Capacitor
9 HFOCUSCAP Horizontal Dynamic Focus Oscillator Capacitor
10 FOCUSOUT Mixed Horizontal and Vertical Dynamic Focus Output
If this Pin is Ground, the H. and V. Output are Inhibited.
11 H-GND Horizontal Section Ground
12 H-FLY Horizontal Fly-back Input ( Positive Polarity )
13 H-REF Horizontal Section Reference Voltage ,8V
14 COMP B+ Error Amplifier Output for Frequency Compensation & Gain Setting
15 REGIN Regulation Input of B+ Control Loop
16 I-SENSE Sensing of External B+ Switching MOSFET Q440 Source Current
17 B+GND Ground(related to B+ reference adjustment)
18 BREATH DC Breathing Input Control
19 V-GND Vertical Selection Signal Ground
20 VAGC-CAP Memory Capacitor for Vertical AUTO-GAIN Control Loop in Vertical
Ramp Generator
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