SGS Thomson Microelectronics STV5730A Datasheet

MULTISTANDARD ON-SCREEN DISPLAY

FOR VCR, PAY-TV, SATELLITE RECEIVER

.

A CHARACTER GENERATOR WITH ASCII
RAMAND CHARACTER ROM :

- 128characters

- 12 dots x 18lines character composition

- 11 rows x 28 characters pagecomposition

.

ACCURATE INTERNAL BANDGAP VOLTAGE
REFERENCE

.

LINE LOCKEDPLL

.

VIDEOTIMING GENERATOR

.

INPUT CVBS CLAMP AND SYNC EXTRAC­TOR

.

VERTICALSYNCSEPARATOR

.

INPUTCVBS SYNC RE-INSERTION

.

INPUTCVBS PRESENCEDETECTOR

.

PAL/NTSCCHROMAENCODER

.

DEDICATEDPINS FOR LUMAAND CHROMA
EXTERNALFILTERING

.

GAIN ON CVBS OUTPUT FOR EITHER 0dB
OR 6dB CAPABILITY

.

MULTISTANDARD TRANSLUCENT MIXED
MODE

.

OPAQUEMIXED MODE

.

NORMALFULLPAGEMODE

.

VIDEOFULL PAGE MODE

.

SUITABLEFOR S-VHS

.

THREE DIFFERENT MARKERS CAN BE
GENERATEDSIMULTANEOUSLY

.

THREE WIRE SERIAL INTERFACE FOR MI­CROPROCESSORCONTROL

DESCRIPTION

The STV5730AIC is intendedto be used in VCR,
Satellitereceiver andPAY-TV systemsfor CVBS or
R/G/Btext/graphicsinsertion.

(Plastic Micropackage)

ORDER CODE :STV5730A

PIN CONNECTIONS

YOUT

VIDEO IN

RES

FTR
AV
DV

CSYNC

XTAL IN

XTAL OUT

MUTE

DATA

CLK

CSN

DD

1
2
3
4
5
6

DD

7
8
9
10
11
12
13
14

R

STV5730A

SO28

28

YIN

27

VIDEO OUT1

26

VIDEO OUT2

25

CIN

24

COUT

23

LESCREEN

22

LECHAR

21

AGND

20

DGND

19

BAR

18

CO

17

FB

16

B

15

G

5730A-01.EPS

February 1996

1/20

STV5730A

PIN DESCRIPTION

o

N

1 YOUT Analog Output This pin outputs the lumato allowthe user to notch filter it. This pin may be

2 VIDEO IN Analog Input This is the CVBS input. An external capacitor is needed for clamp operation.

3 RES Analog Pin it must be tied to an external resistor to control the PLL f0 frequency.
4 FTR Analog Pin itmust be tied to the line PLL loop filter.
5AV
6DV
7 CSYNC Bidirectional

8 XTAL IN DigitalInput This is the 4*fsc quartz input. The quartz may be started or stopped under

9 XTAL OUT Digital Output This is the 4*fsc quartz output. The quartz may be started or stopped under

10 MUTE DigitalOutput This pin indicates if the CVBS input signal is present on VIDEO IN input pin.

11 DATA Digital Input This is the serial interface data input.
12 CLK DigitalInput This is the serial interface clock input.
13 CSN Digital Input This is the serial interface chip select input.
14 R Digital Output This is the Red signal output. It is forced low during the horizontal and vertical

15 G Digital Output This is the Green signal output. It is forced low during the horizontal and
16 B Digital Output This is the Blue signal output. It is forced low during the horizontal and vertical
17 FB Digital Output This is the fast blanking output. It is delivered to control an external R/G/B

18 CO Digital Output This is the character activity output. It indicates if a character foreground is

19 BAR Digital Input This input forces the PLL in free run mode when active. It is enabled if the M0
20 DGND Supply Pin 0V digitalground.

21 AGND Supply Pin 0V analog ground.
22 LECHAR Analog Input This pin determines the characterintensity level in external bias mode (ie

23 LESCREEN Analog Input This pin determines the screen intensity level in external bias mode (ie when

24 COUT Analog Output This pinoutputs the fullpage mode chroma for external filtering (and

25 CIN Analog Input This pin inputs the filtered chroma.
26 VIDEO OUT2 Analog Output If the M7 mode bitis cleared : this pin is a CVBS output that delivers the

27 VIDEO OUT1 Analog Output This is a CVBS output.It delivers the VIDEO IN + text in mixed mode and the

28 YIN Analog Input This pin inputs the notch filtered luma.

Name Type Description

connected to the YIN input for minimum cost applications.

The STV5730A extracts the sync from this signal when the C7 controlbit is
set.

DD
DD

Supply Pin 5V analog supply pin.
Supply Pin 5V digital supply pin.

This pin inputs the mixed mode composite sync when the C7 control bit is

Pin

cleared.It outputs the video in extracted sync when the C7 control bit is set.
control of dedicated serial interface messages. Alternatively, a 4fsc clock can

be input directly. The stop message must not be used in this case.

control of dedicated serial interface messages.
It is forced low if the M2 mode bit is cleared.

blankingintervals.

vertical blanking intervals.
blankingintervals.

switch for R/G/B or TV applications.

beingdisplayed, andcan be used to control its intensity.
mode bit is set.

when the C10 control bit is set). This level must be defined relative to the
internal black reference. A variable luminance signal may be entered. To be
grounded if not used.

the C10 control bit is set). This level must be defined relative to the internal
black reference. A variable luminance signal may be entered. To be grounded
if not used.

attenuationif necessary). This pin may be connected to CIN for minimum cost
applications.

VIDEO IN signal. The sync is re-inserted if the M4 mode bit is set. The output
amplitude may be either 0dB or +6dB according to the M5 mode bit.
If the M7 mode bit is set : It outputs the currently active synchronism. The
signalamplitude is controlled by the M5 mode bit.
If the M8 mode bit is cleared : VIDEO OUT2 is in high impedance state.

CVBS text in full page mode. The output signal amplitude may be either 0dB
or 6dBaccording to the M5 mode bit. The sync is re inserted if the M4 mode
bit isset.

5730A-01.TBL

2/20

BLOCK DIAGRAM

STV5730A

VIDEO

2

CLAMP

7

19

5

6
21
20

LINE LOCKED

CS YNC

BAR

AV

DV
AGND
DGND

IN

DD

DD

COMPOSITE

SYNC

EXTRACTION

PLL

YIN CIN

28 25

SYNC

INSERTION

VERTICAL

SYNC

SEPARATION

PLXCLK

CONTROL

SERIALBUS

INTERFACE

11 1312 1043

INSERTION

H AND V

SCANNING

VIDEO

DETECTOR

MUTECSNCLKDATARESFTR

TEXT

GENERATOR

ASCII

RAM

RAM

ADDRESS

GAIN

DISABLE

CHARACTER

ROM

LUMA&SYNC

GENERATION

BIAS LEVEL

GENERATION

PAL/NTSC

ENCODER &

SATURATION

COLOR

LOGIC

STV5730A

VIDEO

27

OUT1

VIDEO

26

OUT2

XTAL

8

IN
XTAL

9

OUT
COUT

24

14

R

15

G
B

16

FB

17

CO

18

1

YOUT

LECHAR

22

LESCREEN

23

5730A-02.EPS

ABSOLUTEMAXIMUMRATINGS

Symbol Parameter Value Unit

DV
AV

DD
DD

T

Digital Supply Voltage 7 V
Analog Supply Voltage 7 V
Junction Temperature 150

j

THERMALDATA

Symbol Parameter Value Unit

R

th (j-a)

Junction-ambient Thermal Resistance Typ. 70

o

C/W

o

C

3/20

5730A-02.TBL

5730A-03.TBL

STV5730A

ELECTRICAL CHARACTERISTICS (TA=0oCto 70oC, AVDD=DVDD= 5V,unless otherwisespecified)

Symbol Parameter Min. Typ. Max. Unit

DV

DD

DI

DD

AV

DD

AI

DD

AV

-DVDDAnalog to Digital Supply Voltage Difference -200 0 200 mV

DD

DV

OH

DV

DV

DV

DI

IH

DI

IL

BW Bandwidth at pins : VIDEO IN, VIDEO OUT1,

VIDEO IN (Pin 2)

V

SYNCIN

V

CL

C

IN

VIDEO OUT1(Pin 27)

V

OUT1

C

L1

R

L1

Z

OUT1

VIDEO OUT2(Pin 26)

V

OUT2

C

L2

R

L2

Z

OUT2

GAIN (Pins 26- 27)

CIN (Pin 25)

C

CIN

R

CIN

YIN (Pin 28)

C

YIN

YOUT (Pin 1)

V

YOUT

C

LYOUT

R

LYOUT

COUT (Pin 24)

V

COUT

C

LCOUT

R

LCOUT

Digital Supply Voltage DVDD- DGND 4.75 5.0 5.25 V
Digital Supply Current 10 mA
Analog Supply Voltage 4.75 5.0 5.25 V
Analog Supply Current 25 mA

Digital Output Voltage High Level (I
Digital Output Voltage Low Level (I

OL

Digital Input Voltage High Level 0.75 x

IH

Digital Input Voltage Low Level 0.15 x

IL

= -1mA) DVDD-0.5 V

LOAD

= +1mA) DGND + 0.5 V

LOAD

- DGND)

(DV

DD

(DV

DD

Digital Input Current High Level 1 µA
Digital Input Current Low Level -1 µA

8.0 MHz

VIDEO OUT2, CIN, YIN, YOUT, COUT

Sync Pulse Range 100 650 mV
Clamp Voltage 1.10 1.30 1.50 V
External Capacitor 2.2 µF

Output Dynamic Range 2.0 4.4 V
Black Level Voltage 2.20 2.45 2.70 V
Output Capacitor Load 20 pF
Output Resistor Load 10 kΩ
Output Impedance 250 Ω

Output Dynamic Range 2.0 4.4 V
Black Level Voltage 2.20 2.45 2.70 V
Output Capacitor Load 20 pF
Output Resistor Load 10 kΩ
Output Impedance 250 Ω

Gain Dispersion 0dB

6dB

-1
5

0
6

Input Capacitance 0.5 pF
Input Resistance 50 kΩ

Input Capacitance 0.5 pF

Output Dynamic Range 0.5 3.5 V
Output Capacitor Load 15 pF
Output Resistor Load 10 kΩ

Output Dynamic Range 0.5 3.5 V
Output Capacitor Load 15 pF
Output Resistor Load 10 kΩ

- DGND)

+1

7

V

V

dB
dB

5730A-04.TBL

4/20

STV5730A

ELECTRICAL CHARACTERISTICS

=0oCto70oC, AVDD=DVDD=5V, unless otherwisespecified) (continued)

(T

A

Symbol Parameter Min. Typ. Max. Unit

LESCREEN (Pin 23)

V

LESCR

LECHAR (Pin 22)

V

LECH

INTERNAL SIGNAL LEVELS (Pins 1- 24)

V

SYNC

V

BLACK

V

SCREEN

V

CHAR

∆V1 Difference Level between Black and Sync Level 250 300 350 mV
∆V2 Difference Level between Screen and Black Level 100 150 200 mV
∆V3 Difference Level between Char. and Screen Level 450 515 580 mV

V

BURSTPP

V

CH1PP

V

CH2PP

BUS (Pins 11- 12 - 13)

f

CLK

t

CWL

t

CWH

t

CSWL

t

CSWH

t

DCLH

t

CLD

t

CLCSL

t

CSLCLL

t

CLHCSH

t

CSHCL

* maxHZ is the maximum horizontal zoom factor that is used

InputLevel 1.0 3.0 V

InputLevel 1.0 3.0 V

Internal Sync Level 0.95 V
Internal Black Level 1.1 1.25 1.4 V
Internal LESCREEN 1.4 V
Internal LECHAR 1.9 V

Burst Amplitude 320 mV
Chroma Amplitude for blue or yellow colors

for red, magenta, green or cyan colors

420
580

CLK Frequency Range 0 2 MHz
CLK Width Low 200 ns
CLK Width High 200 ns
CSN Width Low maxHZ* x 4 µs
CSN Width High maxHZ* x 4 µs
DATA Valid to CLK High 100 ns
CLK High to DATA Unvalid 100 ns
CLK Valid to CSN Low 100 ns
CSN Low to CLK Low 100 ns
CLK High to CSN High 100 ns
CSN High to CLK Unvalid 100 ns

mV
mV

PP
PP

PP

5730A-05.TBL

Figure1

DATA

CLK

t

CLCSL

CSN

t

DCLH

t

CSLCLL

t

t

CLD

t

CSHCL

t

CWL

t

CSWL

t

CWH

t

CLHCSH

t

CSWH

CLCSL

5730A-03.EPS

5/20

STV5730A

TYPICAL PAL/NTSC/SECAM APPLICATION

CVBS OUT

Ω

68

Ω

180

+5V

(see Note 1)

CHROMA BP FILTER

EXTERNAL

RGB

TEXT

INSERTION

Ω

68

(SCART)

+5V

Ω

68

Ω

180

+5V

+5V

+5V

Ω

180

68Ω

(see Note 3)

R1

+5V

Ω

Ω

180

68

CHROMA TRAP

20

9

220nF

+5V

17

18

19

0

A

10

11

12

39pF

Ω

180

15

16

13

14

39pF

TRANSLUCENT MODE

21

22

23

24

25

26

27

28

6

573

7

220nF

8

STV

LUMAFILTER (see Note 1)

F

µ

2.2

1

2

3

4

5

Ω

4.3k

H

µ

10

CVBS IN

(see note 4)

220pF

Notes : 1. Optional filter.For low cost applications, short circuit.

2. The 4fsc (17.734MHz PAL,14.318MHz NTSC) crystal may be ommited if this signal is already available in a system.

3. External bias level can be set by resistor ratio as required. The level atpins LECHAR and LESCREENmust not exceed 3.0 Vdc.

4. Output impedance of the driving stage should be less than 300Ω.

22kΩ

22nF

+5V

CSYNC

(INor OUT)

Ext. 4 fsc

XTAL

x 4fsc

OSC IN

(see Note 2)

TO MICRO

6/20

Digital Ground

Analog Ground

5730A-04.EPS