Toshiba TLP511E, TLP510E, TLP510U, TLP511U manual Block diagram of TDA4672 RGB Demodulation

Sand castle	100 nF	SDA	SCL	V P= 5V to 8V	100 nF
pulse

17

2

9

10

1

15

SAND CASTLE PULSE

I2 C • BUS

Y delay

I2 C • BUS RECEIVERS

DETECTOR

V REF

V REF

Sand castle

Coring

Peaking

GENERATION

BK.H+V

DELAY TIME

5V / 12V

on / off

frequency

BK

CONTROL

V REF

V REF

CORING

Y

5 MHz

BLACK LEVEL

16

100

90

-0.5

CLAMP

ns

ns

100 nF

2.6 MHz

V REF

CORING

11

100 nF

Control signal

5 MHz

I2 C • BUS

-0.5

2.6 MHz

PEAKING

I2 C • BUS

450

180

BLACK

180

90

45

90

100

BLACK

LEVEL

LEVEL

+1

ns

ns

ns

ns

ns

ns

ns

CLAMP

CLAMP

100 nF

V REF

13

TDA4672

Y

100 nF

14

12

-(R-Y)

-(R-Y)

3

4

-(B-Y)

-(B-Y)

7

6

8

18

5

NC

MED758

Fig. 7-3-9 Block diagram of TDA4672

7-3-6. RGB Demodulation

FSW2 1

28

SCL

The demodulation from Y and color difference signals to RGB signals is carried out by QV008, TDA4780. Fig. 7- 3-10 shows the pin configuration of TDA4780 and Fig.

7-3-11 shows the block diagram. The TDA4780 performs the RGB demodulation and adjusts color, contrast, and brightness.

R2	2	27	SDA
G2	3	26	YHUE
B2	4	25	C R
VP	5	24	R O
-(B-Y)	6	23	C G
-(R-Y)	7	22	GO
		TDA4780	C B
Y	8	21
GND	9	20	B O
R1 10		19	Cl
G1 11		18	C POST
B1 12		17	C L
FSW1 13		16	C PDL

SC 14 15 BCL

Fig. 7-3-10 Pin configuration of TDA4780

7-9