Toshiba TLP511E, TLP510E, TLP510U, TLP511U Video Demodulation Block, Terminal function of TC9090AN

Page 32

7-3. Video Demodulation Block

Table 7-3-1 Terminal function of TC9090AN

7-3-1. Y/C Separation Circuit

Pin

Name

Function

No.

This circuit separates Y and C signals from a composite

1

VREFH

ADC bias

video signal. Fig. 7-3-1 shows the pin configuration of

2

VSS1

ADC GND

TC9090AN and Fig. 7-3-2 shows the block diagram.

3

ADIN

Video input

The composite video signal enters pin 3. A fsc (3.58/

4

VDD1

ADC VDD

4.43 MHz) developed from the video/color IC enters pin

5

VREFL

ADC bias

19 and is converted into a 4fsc of the drive clock

6

BIAS1

ADC bias

frequency inside the IC. The composite video signal

7

P/S

Selection function control

entered is processed at a rate of the clock frequency of

8

SDA

I2C bus clock input

the IC and output as Y and C signal.

9

SCL

I2C bus data input, check output

10

RESET

I2C bus reset

VREFH

1

28

VSS4

11

TEST1

Test terminal

VSS1

2

27

VDD4

12

TEST2

Test terminal

ADIN

3

26

VREF1

13

KILLER

Clock killer switch

VDD1

4

25

YOUT

14

PLLSEL

Selection input clock

VREFL

5

24

BIAS2

15

VDD3

Digital VDD

BIAS1

6

23

COUT

16

VSS3

Analog GND

P/S

7

22

BIAS3

17

VSS2

PLL GND

SDA

8

21

2/1VDD

18

VDD2

PLL VDD

SCL

9

20

VFIL

19

CKIN

Clock input

RESET

10

19

CKIN

20

VFIL

VCO filter

TEST1

11

18

VDD2

21

2/1 VDD

Line memory bias

TEST2

12

17

VSS2

22

BIAS3

DAC bias

KILLER

13

16

VSS3

23

COUT

C output

PLLSEL

14

15

VDD3

24

BIAS2

DAC bias

25

YOUT

Y output

Fig. 7-3-1 Pin configuration of TC9090AN

26

VREF1

DAC bias

27

VDD4

DAC VDD

28

VSS4

DAC GND

Composite

ADC

LINE

VERTICAL EDGE

CORING

video signal 2

MEMORY

ENHANCE CIRCUIT

CIRCUIT

8 bits

CLAMP

+

+

PEDESTAL

YDAC

25 Y

CLIP

8 bits

output

COLOR KILLER CIRCUIT

4.43 MHz NTSC

BPF

BPF

DYNAMIC

1 LINE DOT

23 C

BPF

COMB

IMPROVE

BPF

CDAC

FILTER

CIRCUIT

8 bits

output

BPF

Clock 19

PLL

4 FSC

I2C BUS

8

9

Bus

Fig. 7-3-2 Block diagram of TC9090AN

7-5

Image 32

Contents TLP511U TLP510U TLP511E TLP510E Contents Main Power Supply Circuit Voltage SwitchingDescription Output ControlSupplement Over-current ProtectionOverheat Protection Lamp Power Supply Circuit Lamp Driver ConfigurationOptical System Name DescriptionXGA 1.3 inch 3 plates system G.B. Drive Circuit Outline1st frame 2nd lineBasic specification Operation DescriptionBasic Component Outline of Liquid Crystal Panel 1 Terminal description2 Input terminal function description Name FunctionMicroprocessor System Outline1 System block diagram System Microprocessor 1 Terminal functions of the system microprocessorPower Supply Reset Process Remote Control Reception ProcessNon-volatile Memory Control Process RS-232C Transmission/Reception ProcessOn-screen Display Process 1 Contents of the status display signals and the logicStatus Display Process Video System Control Process Panel System Control ProcessI2C control for each kind of video system 11-1 IC control for each kind of panel system12-1 Each kind of the drive system IC control Drive System Control ProcessVarious Display Modes Applicable Signal 14-1 Applicable signal15-1 RS-232C connection signals Pin No Signal name Signal contentRS-232C Control Method 15-2 RS-232C communication conditions15-3 RS-232C command list Command ContentDigital Circuit Conv Forc ExchangeVideo Signal Format Conversion Panel Driving Timing Signal GenerationSignal Format Measurement PLL CircuitPLL IC CXA3106Q QX028 for RGB Signals Each IC DescriptionPLL IC TLC2932 QX029 for Video Signal Timing Signal Generation PLD QX009Sync Process IC SYG QX004 5. A/D Converter CXA3026Q QX201, QX401 and QX601INV Picture Size of View Conversion IC T-FORC QX204, QX404, QX6049. D/A Converter MemoryVideo Circuit Circuit Component1 Block diagram Input Signal Switch Section Video SignalAudio Signal RGB Signal2 Internal block diagram of CXA1855Q 1. Y/C Separation Circuit Video Demodulation Block1 Terminal function of TC9090AN 4 Pin configuration of TDA9141 Video/Color CircuitLuminance Y Signal Process Circuit Pin No Name FunctionColor Signal Process Circuit Picture Sharpness Correction CircuitPin Name Function SDA9 Block diagram of TDA4672 RGB Demodulation 4 Terminal function of TDA4780 12 Audio circuit block diagram Audio CircuitRGB Signal Switch Circuit output terminal for SYNC/G Sync Signal Process CircuitRGB Signal Amplifier Section VIDEO/VD TC7S08FMicroprocessor Interface NON VD POS VD NEG QB012 M52347FP Input status QB025 CXA1315MHD. COMP. POS NON VD POS VD NEG HD. COMP. NEG HD. HD. Comp Video Signal Process Circuit Power Supply CircuitCCD and Drive Circuit Pre-amp and AD Coversion Circuit1 CCD camera circuit block diagram Winding specification Operating DescriptionCoil Terminal Turns WindingTroubleshooting Fluorescent does not turn onToshiba America Consumer PRODUCTS, INC