SGS Thomson Microelectronics STV5347 Datasheet
MONOCHIPTELETEXTAND VPS DECODER
.
COMPLETETELETEXTAND VPS DECODER
INCLUDINGAN 4 PAGEMEMORYON A SINGLECHIP
.
UPWARD SOFTWARE COMPATIBLE WITH
PREVIOUS SGS-THOMSON’s MULTICHIP
SOLUTIONS(SAA5231,SDA5243,STV5345)
.
PERFORM PDC SYSTEM A (VPS) ANDPDC
SYSTEM B (8/30/2) DATA STORAGE SEPARATLY
.
DEDICATED “ERROR FREE” OUTPUT FOR
VALIDPDCDATA
.
INDICATION OF LINE 23 FOR EXTERNAL
USE
.
SINGLE+5V SUPPLYVOLTAGE
.
SINGLE13.875MHz CRYSTAL
.
REDUCED SET OF EXTERNAL COMPONENTS,NO EXTERNALADJUSTMENT
.
OPTIMIZED NUMBER OF DIGITAL SIGNALS
REDUCINGEMC RADIATION
.
HIGHDENSITYCMOS TECHNOLOGY
.
DIGITAL DATA SLICER AND DISPLAY
CLOCKPHASELOCK LOOP
.
28 PINDIP &SO PACKAGE
STV5347
STV5347/H - STV5347/T
WITH 4 INTEGRATEDPAGES
DIP28
(PlasticPackage)
ORDER CODE :
STV5347 West European
STV5347/H East European
STV5347/T Turkish& European
SO28
(PlasticPackage)
ORDER CODE :
STV5347D West European
STV5347D/H East European
STV5347D/T Turkish & European
PIN CONNECTIONS
DESCRIPTION
The STV5347 teletext decoder is computer-controlled.It can storeeither 4 teletext pages without
ghostrow,or 2 teletextpageswithghostrows.Data
slicing and capturing extracts the teletext informationembedded in thecompositevideo signal. ControlisaccomplishedviaatwowireserialI
Chip address is 22h. Internal ROM provides a
character set suitable to display text using up to
sevennationallanguages.Hardware andsoftware
features allow selectable master/slave synchronizationconfigurations.The STV5347also supports
facilities for reception and display of current level
protocoldata.
June 1997
2
C bus.
CVBS
MA/SL
V
DDA
POL
STTV/LFB
FFB
V
SSD
RGB REF
BLAN
COR
1
2
3
4
5
6
7
8
R
9
G
10 19
B
11 18
12 17
13 16
14 15ODD/EVEN
28
27
26
25
24
23
22
21
20
CBLK
TEST
V
SSA
V
SSO
XTI
XTO
V
DDD
VCR/TV
RESERVED
DV
L23
SDA
SCL
Y
5347-01.EPS
1/22
STV5347 - STV5347/H - STV5347/T
PIN DESCRIPTION
o
Pin N
1 CVBS Input Composite VideoSignal Inputthrough Coupling Capacitor 9
2 MA/SL Input Master/Slave Selection Mode 11
3V
4 POL Input STTV / LFB /FFB PolaritySelection 12
5 STTV/LFB Output / Input Composite Sync Output,Line FlybackInput 15
6 FFB Input Field Flyback Input 12
7V
8 R Output Video Red Signal 13
9 G Output Video Green Signal 13
10 B Output Video Blue Signal 13
11 RGBREF Supply DC Voltage to define RGB High Level 13
12 BLAN Output Fast BlankingOutput TTLLevel 15
13 COR Output Open DrainContrast Reduction Output 15
14 ODD/EVEN Output 25Hz Output Field synchronized for non-interlaced display 15
15 Y Output Open Drain Foreground Information Output 15
16 SCL Input Serial Clock Input 16
17 SDA Input/ Output Serial Data Input/Output 17
18 L23 Output Line 23 Identification 15
19 DV Output VPS Data Valid 15
20 RESERVED Test To be connected to V
21 VCR/TV Input PLL TimeConstant Selection 15
22 V
23 XTO Crystal Output Oscillator Output 13.875MHz 14
24 XTI CrystalInput Oscillator Input 13.875MHz 14
25 V
26 V
27 TEST Test Grounded to V
28 CBLK Input / Output Toconnect Black Level StorageCapacitor 28
Symbol Function Description Figure
DDA
SSD
DDD
SSO
SSA
Analog Supply +5V -
Ground Digital Ground -
througha resistor 15
SSD
Digital Supply +5V -
Ground Oscillator Ground Ground Analog Ground -
SSA
11
5347-01.TBL
BLOCKDIAGRAM
2/22
CVBS
CBLK
VCR/TV
XTI
XTO
V
SSO
SCL
SDA
1
28
21
24
23
25
16
17
STV5347
MA/SL
CLAMPING
SYNCHRONIZING
DATAEXTRACTION
OSCILLATOR
FREQUENCY
SYNTHETIZER
TIME BASE
2
I C BUS
INTERFACE
726 1411
V
V
SSD
POLFFBSTTV/LFB
Data
Clock
27
TES T RGB REF
SSA
V
DDD
DATADECODING
DATA
PROCES SING
Address
Data
CTRL
4 PAGE
MEMORY
Data
Address
CTRL
DISP LAY
INTERFACE
ODD/EVEN
V
DDA
3225624
BLAN
12
COR
13
RED
8
GREEN
9
BLUE
10
Y
15
5347-02.EPS
STV5347 - STV5347/H - STV5347/T
ABSOLUTEMAXIMUM RATINGS
Symbol Parameter Value Unit
V
∆V
T
V
T
DD
V
oper
stg
O
DD
Positive Supply Voltageon V
Input Voltage (any input) - 0.3, VDD+ 0.5 V
I
Output Voltage (any output) - 0.3, VDD+ 0.5 V
Difference between V
DDD,VDDA
Operating Ambient Temperature 0, + 70
Storage Temperature - 40, +150
DDD
and V
DDA
- 0.3, 6.0 V
0.25 V
o
C
o
C
5347-02.TBL
ELECTRICAL CHARACTERISTICS
= 5V,VSS= 0V,TA=25oC)
(V
DD
Symbol Parameter Min. Typ. Max. Unit
SUPPLIES
V
I
DDD
I
DDA
DD
Supply Voltage 4.75 5 5.25 V
V
Pin Supply Current 30 mA
DDD
V
Pin SupplyCurrent 5 mA
DDA
INPUTS
CBLK
I
BLKO
I
BLKI
Source Current (V
Sink Current (V
CBLK
CBLK
=2V,V
=2V,V
CVBS
= 0V) 80
CVBS
= 1V)) - 10
CVBS
CVBSI Video Input Amplitude (peak to peak) 1 V
CVBSC InputCapacitance 10 pF
t
SYNC
V
CLAMP
I
CLPH
I
CLPL
Delay from CVBS to TCS Output from STTV Pin 200 ns
Clamping Level at Synchro Pulse 0 mV
High Level Clamp Current (CVBS = V
Low Level Clamp Current (CVBS= V
+ 1V) 5
CLAMP
- 0.3V) - 400 µA
CLAMP
MA/SL, POL, LFB, FFB, VCR/TV
V
IL
V
IH
I
IL
C
Input Voltage Low Level - 0.3 + 0.8 V
Input Voltage High Level 2 V
Input Leakage Current (VI= 0 to V
Input Capacitance 10 pF
I
) - 10 + 10
DDD
DD
SCL, SDA
V
V
I
f
SCL
t
R,tF
C
IL
IH
IL
Input Voltage Low Level - 0.3 + 1.5 V
Input Voltage High Level 3 V
Input Leakage Current (VI= 0 to VDD) - 10 + 10 µA
Clock Frequency (SCL) 100 kHz
Input Rise and Fall Time(10 to 90%) 2
Input Capacitance 10 pF
I
DD
RGB REF
V
I
I
Input Voltage - 0.3 V
I
Input Current 50 mA
DD
A
µ
A
µ
A
µ
V
A
µ
V
s
µ
V
5347-03.TBL
3/22
STV5347 - STV5347/H - STV5347/T
ELECTRICALCHARACTERISTICS -
=5V, VSS= 0V,TA=25oC (continued)
V
DD
Symbol Parameter Min. Typ. Max. Unit
OUTPUTS
RGB
V
V
C
t
R,tF
Output Low Voltage (IOL= 2mA) 0.4 V
OL
Output High Voltage (IOH= -2mA, RGB REF = VDD/2) RGB REF - 0.5 RGB REF V
OH
Load Capacitance 50 pF
L
Rise and Fall Time (10 to 90%) 20 ns
BLAN
V
V
C
t
R,tF
Output Low Voltage (IOL= 2mA) 0 0.4 V
OL
Output High Voltage (IOH= -0.2mA) VDD- 0.5 V
OH
Load Capacitance 50 pF
L
Rise and Fall Time (10 to 90%) 20 ns
ODD/EVEN, STTV,L23, DV
V
V
C
t
R,tF
COR AND Y(with Pull up to V
V
C
I
OLL
Output Low Voltage(IOL= 2mA) 0 0.5 V
OL
Output High Voltage (IOH= -0.2mA) VDD- 0.8 V
OH
Load Capacitance 50 pF
L
Rise and Fall Time (10 to 90%) 20 ns
)
DDD
Output Low Voltage (IOL= 2mA) 0 0.5 V
OL
Load Capacitance 25 pF
L
t
Fall Time (RL= 1.2kΩ,V
F
- 0.5Vto 1.5V) 50 ns
DDD
Output Leakage Current -10 +10 µA
DD
SDA
V
C
Output Low Voltage (IOL= 3mA) 0 0.5 V
OL
t
Fall Time (3.0 to 1.0V) 200 ns
F
Load Capacitance 400 pF
L
CRYSTALOSCILLATOR
XTI, XTO
f
R
XTAL
BIAS
C
Crystal Frequency 13.875 MHz
Internal Bias Resistance 0.4 1 3 M
Input Capacitance 7pF
I
TIMING
SERIAL BUS(referred to V
=3V,VIL= 1.5V)
IH
Clock :
t
LOW
t
HIGH
t
SU, DAT
t
HD,DAT
t
SU, STO
t
BUF
t
HD, STA
t
SU,STA
Low Period
●
High Period
●
Data Set-up Time 250 ns
Data Hold Time 170 ns
Stop Set-upTime fromClock High 4
Start Set-up Time followinga Stop 4
Start Hold Time 4 µs
Start Set-up Time followingClock Low to High Transition 4 µs
4
4
µs
µ
µ
V
Ω
s
s
5347-04.TBL
4/22
Figure 1 : DisplayOutput Timing
LSP
(TCS)
R.G.B.Y
(1)
STV5347 - STV5347/H - STV5347/T
µs
0 4.66 64
40
Figure 2 : SerialBus Timing
SDA
t
BUF
SCL
t
SDA
R.G.B.Y
(1)
HD,STA
0
16.67 56.67
(a) LINE RATE
all timingsin µs
lines 42 to 291 inclusive
(and 355 to 604 inclusiveinterlaced)
0
(b) FIELD RATE
t
LOW
t
t
R
HD,DAT
31229141
line numbers
t
HIGH
5347-03.EPS
t
F
t
SU,DAT
t
VIH=3V,VIL=1.5V
SU,STA
Figure3 : MasterSynchronizationMode - HardwareConfiguration
Synchro
+5V
MA/SL
POL
1
Extractor
2
VCS
R
4
Line PLL Line PLL
=”0”
1D2
STTV
TCS
R1D2=”1”
Bit R
1D2
Control
I2C
t
SU,STO
Output signal on STTV Pin :
POL grounded
VCS when R
TCS when R
POL to V
DD
VCS when R
TCS when R
1D2
1D2
1D2
1D2
=0
=1
=0
=1
5347-04.EPS
5347-05.EPS
5/22
STV5347 - STV5347/H - STV5347/T
Figure4 : MasterSynchronizationMode - DeliveredCompositeSynchronizationSignal
VCS, TCS
(interlaced)
621
622
(308)
(309)
VCS, TCS
(interlaced)
309 310 311 312 313 314
TCS
(non-interlaced)
308 309 310 311 312 1 2 3 4 5 6
The numberpositions indicate the end of lines.
Internal signals:
- VCS compositesynchro from CVBSsignal,
- TCS Teletextcompositesynchro.
Figure5 : SlaveSynchronizationMode
623
(310)
624
(311)
625
(312)
12 3456
315
316
317
(1)
(2)
(3)
(4)
318
(5)
319
(6)
5347-06.EPS
MA/SL
+5V
+5V
POL grounded,Inputs Signals :
are
LFB line flybacksynchro onPin 5
FFB field flyback synchro on Pin 6
or SCS synchro composite signalon Pins 5 and 6
Note : R
and R1D1must be setto 1.
1D0
Figure6 : DataValidTiming (DV)
DV for
VPS Data
Line 16
25
POL
4
Field 0
LFB
SCS
6
FFB
POL to V
, InputsSignals :
DD
are LFB line flyback synchro on Pin 5
FFB field flyback synchroon Pin 6
or SCS synchro composite signalon Pins 5 and 6
Field1 Field0
5347-07.EPS
5347-08.EPS
6/22
FUNCTIONAL DESCRIPTION
I - Displayable Page MemoryMap
The organization of a page-memory is shown in
Figure7.
Thedisplay areaconsists of25 rowsof 40 characters per row.
Theorganization isas follows:
- Row zero containsthe pageheader :
• The first seven characters (0 - 6) are used for
messagesregarding the operationalstatus.
• The eighthcharacteris an alphanumericcontrol
character either“white” or “green” defining the
“search” status of the page. When it is “white”
the operational state is normal and the header
appears white ; when it is “green” the opera-
Figure7 : Page Memory Organization
Fixed characters
7 Status
Characters
Alphanumerics white
for normal,
green on search
24 characters from page header
rolling on page search
STV5347 - STV5347/H - STV5347/T
tional state corresponds to the “search mode”
and the header appearsgreen.
• The following twenty-four characters give the
headerof therequested pagewhen thesystem
is in searchmode.
• Thelast eightcharactersdisplaythetimeof day.
- Row number twenty-four is used by the microprocessor for the display of information, or used
to display X/24 colored key data according to
R0D7 bit.
- Row twenty-five comprises ten bytes of control
data concerningthe received page (see Table 1)
and fourteenfreebytes whichcan be usedby the
microprocessor.
8 scrolling
time characters
ROW
17248
MAIN PAGE DISPLAY AREA
row free for status (R0D7 = 0) or packet X/24 (R0D7= 1)
10 14
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
10 bytes for received
page information
14 bytes free
for use byµC
5347-09.EPS
7/22
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