Philips saa5281 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

SAA5281

Integrated Video input processor and Teletext decoder (IVT1.8*)

Preliminary speciﬁcation Supersedes data of June 1994 File under Integrated Circuits, IC02

1996 Nov 04

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

FEATURES

• Complete Teletext and VPS decoding in a single package

• Built-in 8K × 8 memory for up to 8 page storage

• Enhanced mode allows 7 Fastext pages and 8 pages of

TOP to be captured

• Ability to request only subtitle pages

• Acquisition and decoding of VPS data

• Data valid output available to indicate reception of

error-free VPS or packet 8/30/2 data

• Software and hardware compatible with SAA5246 and SAA5248

• Meshing display within boxes

• Separate data checking algorithms and pointers for

each acquisition channel

• 24 : 18 Hamming checker

• Automatic packet 26 extension character processing

• Indication of Line 23 for external use

• 13.5 MHz clock output to drive external microcontroller

• Detection of Spanish transmissions to disable

flicker-stopper

• Compatible with Philips’ one-chip TV IC (TDA836X) for scan-locking applications.

SAA5281

DESCRIPTION

The IVT1.8* is a single-chip Teletext decoder IC for decoding 625-line based World System Teletext transmissions. The device is based on IVT1.0VPS and has reception facilities for the 5 MHz biphase VPS signal. It is intended for use in video recorders, in particular to implement the VPT facility (VCR programming via Teletext). With suitable software both VPT standards (EBU PDC System A and System B) can be accommodated to allow operation from any European VPT transmission. Automatic processing of packet 26 transmissions is also possible. No external memory is required as an 8K × 8 DRAM is included on-chip for up to 8 page storage. An enhanced mode allows 7 Fastext pages to be stored, with one chapter used to store extension packets.

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

DD

I

DD

V

sync

V

vid(p-p)

f

xtal

T

amb

ORDERING INFORMATION

TYPE NUMBER

SAA5281P DIP48 plastic shrink dual in-line package; 32 leads (400 mil) SOT240-1 SAA5281ZP SDIP52 plastic shrink dual in-line package; 52 leads (600 mil) SOT247-1 SAA5281GP QFP64 plastic quad ﬂat package; 64 leads

supply voltage 4.5 5.0 5.5 V supply current − 75 150 mA sync voltage amplitude 0.1 0.3 0.6 V video input voltage amplitude

(peak-to-peak value) crystal frequency − 27 − MHz operating ambient temperature −20 − +70 °C

NAME DESCRIPTION VERSION

(lead length 1.95 mm); body 14 × 20 × 2.8 mm

0.7 1.0 1.4 V

PACKAGE

SOT319-2

1996 Nov 04 2

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

BLOCK DIAGRAM

BLAN

handbook, full pagewidth

ODD/EVEN

(or DV)

V

DD1VDD2

110

POWER-ON

RESET

21

24 TO 18

HAMMING

DECODER

Y

22 19 20 18 15 16 17

RGBREF

COR

DISPLAY

RGB

PACKET 26

PROCESSING

ENGINE

DRAM

REFRESH

AND

TIMING

SAA5281

8K x 8 DRAM

MEMORY

INTERFACE

REF

IREF

AND DECODING

CONVERTER

DATA SLICER

REGENERATOR

6

ANALOG

9

REFERENCE GENERATOR

V

SS1

TELETEXT

AQUISITION

SERIAL-TO

-PARALLEL

AND CLOCK

14 255

V

SS2

ANALOG

DIGITAL

CONVERTER

V

SS3

VPS

ACQUISITION

AND

DECODING

TELETEXT

OR

VPS CONTROL

TO

CVBS BLACK STTV/LFB

INPUT CLAMP

AND SYNC

SEPARATOR

78 12 36 2 3

SAA5281

ANALOG OUTPUT BUFFER

2

I C-BUS

INTERFACE

TIMING

CHAIN

DISPLAY CLOCK PHASE-LOCKED

LOOP

27 MHz CLOCK

GENERATOR

CLK EN

OSCOUT

OSCIN

24

SDA

23

SCL

44

LINE 23

VCR/FFB

13

11

POL CLK O/P

37

4

OSCGND

MBD783

1996 Nov 04 3

Fig.1 Block diagram; pin numbers for DIP48 (SOT240-1).

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

PINNING

SYMBOL

SOT240-1 SOT247-1 SOT319-2

V

DD1

1 52 11 +5 V supply 1 OSCOUT 2 1 13 27 MHz crystal oscillator output OSCIN 3 2 14 27 MHz crystal oscillator input OSCGND 4 3 15 0 V crystal oscillator ground V

SS1

5 4 and 5 16 0 V ground REF+ 6 6 18 positive reference voltage for ADC; this pin should be connected

BLACK 7 8 19 video black level storage input/output; this pin should be

CVBS 8 9 20 composite video input; a positive-going 1 V (peak-to-peak) input

IREF 9 10 21 reference current input, connected to ground via a 27 kΩ resistor V

DD2

10 11 22 +5 V supply 2 POL 11 12 23 STTV/LFB/FFB polarity selection input STTV/LFB 12 13 24 sync to TV output line ﬂyback input; function controlled by an

VCR/FFB 13 14 27 PLL time constant switch/ﬁeld input; function controlled by an

V

SS2

14 15 28 0 V ground; connected to V R 15 16 30 dot rate character output of the RED colour information G 16 17 32 dot rate character output of the GREEN colour information B 17 18 33 dot rate character output of the BLUE colour information RGBREF 18 19 34 input DC voltage to deﬁne the output high level on the RGB pins BLAN 19 20 35 dot rate fast blanking output COR 20 21 36 programmable output to provide contrast reduction of the TV

ODD/EVEN

21 22 37 in ODD/EVEN mode a 25 Hz output synchronized with the CVBS (or DV)

Y 22 23 38 dot rate character output of teletext foreground colour information;

SCL 23 24 39 serial clock input for I

SDA 24 25 40 serial data port for the I

V

SS3

25 26 44 0 V ground

DESCRIPTION

to ground via a 100 nF capacitor

connected to ground via a 100 nF capacitor

is required, connected via a 100 nF capacitor

internal register bit (scan sync mode)

for normal operation

SS1

picture for mixed text and picture displays or when viewing newsﬂash/subtitle pages; open-drain output

input ﬁeld sync pulses to produce a non-interlaced display by adjustment of the vertical deﬂection currents; in DV mode a VPT data valid signal is used to indicate reception of error-free VPS or 8/30 format 2 data

open-drain output

2

C-bus; it can still be driven HIGH during

power-down of the device

2

C-bus, open-drain output; it can still be

driven HIGH during power-down of the device

1996 Nov 04 4

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

SYMBOL

SOT240-1 SOT247-1 SOT319-2

i.c. 26 to 35,

38 to 43,

45 to 48

CLK EN 36 39 56 clock enable input to enable the clock output (CLP O/P pin 37);

CLK O/P 37 40 59 13.5 MHz clock output to drive an external microcontroller LINE 23 44 47 4 output for indication of Line 23 for use with external circuitry n.c. − 7, 33, 34 9, 10, 12,

27 to 32, 35 to 38, 41 to 46,

48 to 51

1to3, 5to8,

45 to 53,

55, 61,

63 to 64

17, 25, 26,

29, 31,

41 to 43,

54, 57, 58,

60, 62

DESCRIPTION

internally connected; normally open-circuit

internal pull-down normally disables clock

not connected; normally open-circuit

1996 Nov 04 5

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

handbook, halfpage

V

DD1

OSCOUT

OSCIN

OSCGND

V

SS1

REF+

BLACK

CVBS

IREF

V

DD2 POL

STTV/LFB

VCR/FFB

V

SS2

RGBREF

BLAN

COR

ODD/EVEN

(or DV)

SCL SDA

MBD784

48 i.c.

i.c.

47

i.c.

46 45

i.c. LINE 23

44

i.c.

43 42

i.c. i.c.

41

i.c.

40

i.c.

39 38

i.c. CLK O/P

37 36

CLK EN i.c.

35

i.c.

34 33

i.c.

32

i.c.

31

i.c. i.c.

30 29

i.c.

28

i.c. i.c.

27

i.c.

26

V

25

SS3

1 2 3 4 5 6 7 8

9 10 11 12

SAA5281

13 14 15

R G

16 17

B

18 19 20

21 22

Y

23 24

handbook, halfpage

OSCOUT

OSCGND

STTV/LFB

VCR/FFB

ODD/EVEN

OSCIN

V

SS1

V

SS1

REF+

n.c.

BLACK

CVBS

IREF

V

DD2 POL

V

SS2

RGBREF

BLAN

COR

(or DV)

SCL SDA

V

SS3

SAA5281

1 2 3 4 5 6 7 8

9 10 11 12

SAA5281

13 14 15

R

16

G

17

B

18 19 20

21 22

Y

23 24 25 26

MBD785

52 51 50 49 48 47 46 45 44 43 42 41

40 39 38

37 36 35

34 33 32 31

30 29 28 27

V

DD1

i.c. i.c. i.c. i.c. LINE 23 i.c. i.c. i.c. i.c. i.c. i.c. CLK O/P CLK EN i.c. i.c. i.c. i.c. n.c. n.c. i.c. i.c. i.c. i.c. i.c. i.c.

Fig.2 Pin configuration; SOT240-1 (DIP48).

1996 Nov 04 6

Fig.3 Pin configuration; SOT247-1 (SDIP52).

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

handbook, full pagewidth

i.c.

n.c.

i.c.

i.c. 64

63

62

1

i.c. i.c.

2

i.c.

3

LINE 23

OSCOUT

OSCGND

4

i.c.

5

i.c.

6 7

i.c. i.c.

8

n.c.

9

10

n.c.

V

11

DD1

n.c.

12 13

OSCIN

14 15

V

16

SS1

17

n.c.

18

REF+

19

BLACK B

n.c.

61

60

CLK O/P

n.c.

59

58

SAA5281

n.c.

57

i.c.

CLK EN 56

55

n.c. 54

i.c. 53

i.c. 52

51

i.c.

50

i.c. i.c.

49

i.c.

48 47

i.c.

46

i.c. i.c.

45

V

44

n.c.

43 42

n.c.

41

n.c.

40

SDA SCL

39 38

Y ODD/EVEN

37

(or DV)

36

COR BLAN

35 34

RGBREF

33

SAA5281

SS3

20

21

22

23

24

25

CVBS

IREF

DD2

V

POL

n.c.

STTV/LFB

Fig.4 Pin configuration; SOT319-2 (QFP64).

1996 Nov 04 7

26

n.c.

27

28

SS2

V

VCR/FFB

29 n.c.

30

31

32

n.c.

G

MBH665

R

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

QUALITY AND RELIABILITY

This device will meet Philips Semiconductors General Quality Specification for Business group

Circuits SNW-FQ-611-Part E”

Group A Table 1 Acceptance tests per lot

TEST REQUIREMENTS

Mechanical cumulative target: <100 ppm Electrical cumulative target: <100 ppm

Group B Table 2 Processability tests (by package family)

TEST REQUIREMENTS

Solderability <7% LTPD Mechanical <15% LTPD Solder heat resistance <15% LTPD

. The principal requirements are shown in Tables 1 to 4.

(1)

SAA5281

“Consumer Integrated

Group C Table 3 Reliability tests (by process family)

TEST CONDITIONS REQUIREMENTS

Operational life 168 hours at Tj= 150 °C <1500 FPM; equivalent to

<100 FITS at Tj=70°C

Humidity life temperature, humidity, bias

<2000 FPM 1000 hours, 85 °C, 85% RH (or equivalent test)

Temperature cycling performance T

stg(min)

to T

stg(max)

<2000 FPM

Table 4 Reliability tests (by device type)

TEST CONDITIONS REQUIREMENTS

ESD and latch-up ESD Human body model

<15% LTPD 2000 V, 100 pF, 1.5 kΩ

ESD Machine model

<15% LTPD 200 V, 200 pF, 0 Ω

latch-up 100 mA, 1.5 × V

DD

<15% LTPD (absolute maximum)

Notes to Tables 1 to 4

1. ppm = fraction of defective devices, in parts per million. LTPD = Lot Tolerance Percent Defective. FPM = fraction of devices failing at test condition, in Failures Per Million. FITS = Failures In Time Standard.

(1)

1996 Nov 04 8

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

LIMITING VALUES

In accordance with Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

V

DD

V

I

V

O

I

O

I

IOK

T

amb

CHARACTERISTICS

= 5 V ±10%; T

V

DD

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

DD

I

DDtot

Inputs

supply voltage (all supplies) −0.3 +6.5 V input voltage (any input) −0.3 VDD+ 0.5 V output voltage (any output) −0.3 VDD+ 0.5 V output current (each output) −±10 mA DC input or output diode current −±20 mA operating ambient temperature −20 +70 °C

= −20 to +70 °C; pin numbers refer DIP48 package; unless otherwise speciﬁed.

amb

supply voltage 4.5 5.0 5.5 V total supply current − 75 150 mA

CVBS V

sync

V

burst(p-p)

sync voltage amplitude 0.1 0.3 0.6 V colour burst amplitude

0.0 0.3 4.0 V

(peak-to-peak value)

t

d(sync)

delay from CVBS to TCS

−150 0 +150 ns output from STTV buffer (nominal video, average of leading/trailing edge)

∆t

d(sync)

change in sync delay between

0 − 25 ns all black and all white video input at nominal levels

V

vid(p-p)

video input voltage amplitude

0.7 1.0 1.4 V

(peak-to-peak value)

V

dat(text)

teletext data voltage amplitude 0.29 0.46 0.71 V

∆f/f display PLL capture range ±7 −−% Z

source

V

I

source impedance −−250 Ω input switching voltage level of

1.7 2.0 2.3 V

sync separator

Z

I

C

I

input impedance 2.5 5.0 − kΩ input capacitance −−10 pF

IREF R

gnd

V

i

resistor to ground − 27 − kΩ input voltage − 0.5V

DD

− V

1996 Nov 04 9

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

POL V

IL

V

IH

I

LI

C

I

LFB V

IL

V

IH

I

LI

I

Imax

t

dLFB

VCR/FFB V

IL

V

IH

I

LI

I

Imax

RGBREF V

IL

I

LI

SCL V

IL

V

IH

I

LI

C

I

f

clk

t

r

t

f

Inputs/outputs

LOW level input voltage −0.3 − +0.8 V HIGH level input voltage 2.0 − VDD+ 0.5 V input leakage current VI= 0 to V

DD

−10 − +10 µA

input capacitance −−10 pF

LOW level input voltage −0.3 − tbf V HIGH level input voltage tbf − VDD+ 0.5 V input leakage current VI= 0 to V

DD

−10 − +10 µA maximum input current note 1 −1 − +1 mA delay between LFB front edge

− 250 − ns and input video line sync

LOW level input voltage −0.3 − +0.8 V HIGH level input voltage 2.0 − VDD+ 0.5 V input leakage current VI= 0 to V

DD

−10 − +10 µA maximum input current note 1 −1 − +1 mA

LOW level input voltage −0.3 − V input leakage current VI= 0 to V

DD

−10 − +10 µA

DD

V

LOW level input voltage −0.3 − +1.5 V HIGH level input voltage 3.0 − VDD+ 0.5 V input leakage current VI= 0 to V

DD

−10 − +10 µA input capacitance −−10 pF clock frequency 0 − 100 kHz input rise time between 10% and 90% −−2µs input fall time between 90% and 10% −−2µs

C

RYSTAL OSCILLATOR (OSCIN; OSCOUT)

V

osc(p-p)

oscillator voltage amplitude (peak-to-peak value)

G

v

G

m

C

I

C

fb

small signal voltage gain − 1.0 − mutual conductance 5.0 −−mS input capacitance −−10 pF feedback capacitance − 1 − pF

1996 Nov 04 10

− 1.0 − V

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

BLACK C

black

V

black

I

LI

SDA (OPEN-DRAIN INPUT/OUTPUT) V

IL

V

IH

V

OL

I

LI

C

I

C

L

t

r

t

f

t

f

Outputs

storage capacitor to ground − 100 − nF black level voltage for nominal

1.8 2.15 2.5 V sync amplitude

input leakage current VI= 0 to V

DD

−10 − +10 µA

LOW level input voltage −0.3 − +1.5 V HIGH level input voltage 3.0 − VDD+ 0.5 V LOW level output voltage IOL= 3 mA 0 − 0.5 V input leakage current VI= 0 to V

DD

−10 − +10 µA input capacitance −−10 pF load capacitance −−400 pF input rise time between 10% and 90% −−2µs input fall time between 90% and 10% −−2µs output fall time between 3 V and 1 V −−200 ns

STTV G

sttv

gain of STTV relative to video

0.9 1.0 1.1 input

V ∆V

tcs

TCS voltage amplitude 0.2 0.3 0.45 V DC shift between TCS output

−−0.15 V and nominal video output

I

O

C

L

output drive current −−3.0 mA load capacitance −−100 pF

R, G AND B V

OL

V

OH

LOW level output voltage IOL= 2 mA 0 − 0.2 V HIGH level output voltage IOH= −1.6 mA;

V

RGBREF

< VDD− 2V;

V

RGBREF

− 0.25

V

RGBREFVRGBREF

+ 0.5

note 2

| output impedance −−200 Ω

|Z

o

C

L

t

r

t

f

load capacitance −−50 pF output rise time between 10% and 90% −−20 ns output fall time between 90% and 10% −−20 ns

BLAN V

OL

V

OH

C

L

t

r

t

f

LOW level output voltage IOL= 1.6 mA 0 − 0.4 V HIGH level output voltage IOH= − 0.2 mA 1.1 −−V

I

=0mA −−2.8 V

OH

load capacitance −−50 pF output rise time between 10% and 90% −−20 ns output fall time between 90% and 10% −−20 ns

V

1996 Nov 04 11

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and

SAA5281

Teletext decoder (IVT1.8*)

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

ODD/EVEN OR DV V

OL

V

OH

C

L

t

r

t

f

COR AND Y(OPEN-DRAIN OUTPUTS) V

OH

V

OL

C

L

t

f

I

LO

t

skew

2

C-bus timing (see Fig.5)

I

t

LOW

t

HIGH

t

SU;DAT

t

HD;DAT

t

SU;STO

t

BUF

t

HD;STA

t

SU;STA

LOW level output voltage IOL= 1.6 mA 0 − 0.4 V HIGH level output voltage IOH= −1.6 mA VDD− 0.4 − V

DD

V load capacitance −−120 pF output rise time between 0.6 V and

−−50 ns

2.2 V

output fall time between 0.6 V and

−−50 ns

2.2 V

HIGH level pull-up output

−−VDDV

voltage LOW level output voltage IOL= 2 mA 0 − 0.4 V

= 5 mA 0 − 1.0 V

I

OL

load capacitance −−25 pF output fall time load resistor of 1.2 kΩ

−−50 ns to VDD; measured between VDD− 0.5 V and 1.5 V

output leakage current VI= 0 to V skew delay between display

DD

−10 − +10 µA

−−20 ns

outputs R, G, B, COR, Y and BLAN

SCL clock LOW time 4.0 −−µs SCL clock HIGH time 4.0 −−µs data set-up time 250 −−ns data hold time 170 −−ns set-up time from clock HIGH

4.0 −−µs

to STOP ST ART set-up time following a

4.0 −−µs

STOP START hold time 4.0 −−µs ST ART set-up time following a

4.0 −−µs

clock LOW-to-HIGH transition

Notes

1. This current is the maximum allowed into the inputs when line and field flyback signals are connected to these inputs. Series current limiting resistors must be used to limit the input currents to ±1 mA.

2. Voltage level VOH for R, G and B outputs is taken to be the mean value during the output HIGH time. If higher R, G and B voltage VOH levels are required RGBREF voltage level may be raised and a pull-up resistor used at each of these pins provided current specification (IOL) is not exceeded.

1996 Nov 04 12

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

handbook, full pagewidth

SDA

t

LOW

SCL

SDA

MBC764

t

BUF

t

HD;STA

t

r

t

SU;STA

t

HD;DAT

t

HIGH

SAA5281

t

f

t

SU;DAT

t

SU;STO

TIMING CHAIN

handbook, full pagewidth

LSP

(TCS)

R, G, B, Y

(1)

R, G, B, Y

(1)

0 4.66

0

Fig.5 I2C-bus timing.

40 µs

display period

16.67

lines 42 to 291 inclusive (and 355 to 604 inclusive interlaced)

display period

41

56.67 µs

64 µs

291

line numbers

MLA662 - 1

312

(1) Also BLAN in character and box blanking.

1996 Nov 04 13

Fig.6 Display output timing (a) line rate (b) field rate.

Philips Semiconductors Preliminary speciﬁcation

Integrated Video input processor and Teletext decoder (IVT1.8*)

64 µs

59.33

SAA5281

MLA037 - 2

0 4.66

32 34.33

0 2.33

handbook, full pagewidth

27.33 32

0

1 2 3456 7

625

(312)

624

(311)

623

(310)

622

(309)

621

(308)

309 310 311 312 313 314 (1) 315 (2) 316 (3) 317 (4) 318 (5) 319 (6) 320 (7)

Fig.7 Composite sync waveforms.

308 309 310 311 312 1 2 3 4 5 6 7

LSP

(Line Sync Pulse)

1996 Nov 04 14

EP

(Equalizing Pulse)

BP

(Broad Pulse)

TCS interlaced

TCS non-interlaced

LSP, EP and BP are combined to give TCS as shown. All timings are measured from falling edge of LSP.

Line numbers placed in the middle of the line.

Equivalent count numbers in brackets.