Philips saa5x9x DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

SAA5x9x family

Economy teletext and TV
microcontrollers

Preliminary specification
Supersedes data of 1997 Jul 07
File under Integrated Circuits, IC02

1998 Dec 14

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

CONTENTS

1 FEATURES

1.1 General

1.2 Microcontroller

1.3 Teletext acquisition

1.4 Teletext Display

1.5 Additional features of SAA529xA devices

1.6 Additional features of SAA549x devices
2 GENERAL DESCRIPTION

2.1 Device masking history
3 ORDERING INFORMATION
4 QUICK REFERENCE DATA
5 BLOCK DIAGRAM
6 PINNING INFORMATION

6.1 Pinning

6.2 Pin description
7 FUNCTIONAL DESCRIPTION

7.1 Microcontroller

7.2 80C51 features not supported

7.3 Additional features

7.4 Microcontroller interfacing
8 TELETEXT DECODER

8.1 Data slicer

8.2 Acquisition timing

8.3 Teletext acquisition

8.4 Rolling headers and time

8.5 Error checking

8.6 Memory organisation of SAA5296/7,
SAA5296/7A and SAA5496/7

8.7 Inventory page

8.8 Memory organisation of SAA5290, SAA5290A,
SAA5291, SAA5291A and SAA5491

8.9 Packet 26 processing

8.10 VPS

8.11 Wide Screen Signalling (SAA529xA and
SAA549x only)

8.12 525-line world system teletext

8.13 Fastext detection

8.14 Page clearing

8.15 Full channel operation

8.16 Independent data services (SAA5290,
SAA5290A, SAA5291, SAA5291A and
SAA5491 only)

9 THE DISPLAY

9.1 Introduction

9.2 Character matrix

9.3 East/West selection

9.4 National option characters

9.5 The twist attribute

9.6 Language group identification

9.7 525-line operation

9.8 On-Screen Display characters

9.9 Control characters

9.10 Quadruple width display (SAA549x)

9.11 Page attributes

9.12 Display modes

9.13 On-Screen Display boxes

9.14 Screen colour

9.15 Redefinable colours (SAA549x)

9.16 Cursor

9.17 Other display features

9.18 Display timing

9.19 Horizontal timing

9.20 Vertical timing

9.21 Display position

9.22 Clock generator

9.23 Reset signal
10 CHARACTER SETS

10.1 Pan-European

10.2 Cyrillic

10.3 Greek/Turkish

10.4 Arabic/English/French

10.5 Thai

10.6 Arabic/Hebrew

10.7 Iranian
11 LIMITING VALUES
12 CHARACTERISTICS
13 CHARACTERISTICS FOR THE I2C-BUS

INTERFACE
14 QUALITY AND RELIABILITY
15 APPLICATION INFORMATION
16 EMC GUIDELINES
17 PACKAGE OUTLINES
18 SOLDERING

18.1 Introduction

18.2 Through-hole mount packages

18.3 Surface mount packages

18.4 Suitability of IC packages for wave, reflow and

dipping soldering methods
19 DEFINITIONS
20 LIFE SUPPORT APPLICATIONS
21 PURCHASE OF PHILIPS I2C COMPONENTS

1998 Dec 14 2

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

1 FEATURES

1.1 General

• Single chip microcontroller with integrated teletext
decoder

• Single +5 V power supply

• Single crystal oscillator for teletext decoder, display and

microcontroller

• Teletext function can be powered-down independently
of microcontroller function for reduced power
consumption in standby

• Pin compatibility throughout family.

1.2 Microcontroller

• 80C51 microcontroller core

• 16/32/64 kbyte mask programmed ROM

• 256/768/1280 bytes of microcontroller RAM

• Eight 6-bit Pulse Width Modulator (PWM) outputs for

control of TV analog signals

• One 14-bit PWM for Voltage Synthesis Tuner control

• Four 8-bit Analog-to-Digital converters

• 2 high current open-drain outputs for directly driving

LEDs etc.

2

• I

C-bus interface

• External ROM and RAM capability on QFP80 package
version.

• Automatic detection of FASTEXT transmission

• Real-time packet 26 engine for processing accented

(and other) characters

• Comprehensive Teletext language coverage

• Video signal quality detector.

1.4 Teletext Display

• 525-line and 625-line display

• 12 × 10 character matrix

• Double height, width and size On-Screen Display (OSD)

• Definable border colour

• Enhanced display features including meshing and

shadowing

• 260 characters in mask programmed ROM

• Automatic FRAME output control with manual override

• RGB push-pull output to standard decoder ICs

• Stable display via slave synchronisation to horizontal

sync and vertical sync.

1.5 Additional features of SAA529xA devices

1.3 Teletext acquisition

• 1 page and 10 page Teletext version

• Acquisition of 525-line and 625-line World System

Teletext, with automatic selection

• Acquisition and decoding of VPS data (PDC system A)

• Page clearing in under 64 µs (1 TV line)

• Separate storage of extension packets

(SAA5296/7, SAA5296/7A and SAA5496/7)

• Inventory of transmitted Teletext pages stored in the
Transmitted Page Table (TPT) and Subtitle Page Table
(SPT) (SAA5296/7, SAA5296/7A and SAA5496/7)

1998 Dec 14 3

• Wide Screen Signalling (WSS) bit decoding (line 23).

1.6 Additional features of SAA549x devices

• Wide Screen Signalling bit decoding (line 23)

• Quad width OSD capability

• 32 additional OSD characters in mask programmed

ROM

• 8 foreground and 8 background colours definable from a
palette of 64.

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

2 GENERAL DESCRIPTION

The SAA529x, SAA529xA and SAA549x family of
microcontrollers are a derivative of the Philips’
industry-standard 80C51 microcontroller and are intended
for use as the central control mechanism in a television
receiver. They provide control functions for the television
system and include an integrated teletext function.

The teletext hardware has the capability of decoding and
displaying both 525-line and 625-line World System
Teletext. The same display hardware is used both for
Teletext and On-Screen Display, which means that the
display features give greater flexibility to differentiate the
TV set.

The family offers both 1 page and 10 page Teletext
capability, in a range of ROM sizes. Increasing display
capability is offered from the SAA5290 to the SAA5497.

2.1 Device masking history

A number of mask variants have been produced for the
ETT family of devices. The current mask variants available
are:

• SAA5x90 M5A

• SAA5x91 M1A

• SAA5x96 M5A

• SAA5x97 M1A.

There have been two design issues with the M1 mask,
which required resolving, these brought about the
introduction of the M1A mask:

• Spanish G3 arrows

• OSD twist effect.

The Spanish G3 arrows issue was only encountered on
the Pan-European device, it became apparent that an
up arrow and a right arrow were missing from the Spanish
character map.

The OSD twist effect was inherent on all devices, although
not visible on the Pan-European version. Essentially, OSD
characters had the ability to set and reset the serial
attribute “twist”. This effect is described in detail in
Application note

“SPG/AN97004 Version 1.0”

.

1998 Dec 14 4

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

3 ORDERING INFORMATION

TYPE NUMBER

(1)

PACKAGE

NAME DESCRIPTION VERSION

SAA5290PS/nnn SDIP52 plastic shrink dual in-line package; 52 leads

SOT247-1 16 kbytes

PROGRAM

MEMORY (ROM)

(600 mil)
SAA5291PS/nnn SDIP52 plastic shrink dual in-line package; 52 leads
SAA5296PS/nnn

(600 mil)

SOT247-1 32 kbytes

SAA5296APS/nnn
SAA5491PS/nnn
SAA5496PS/nnn
SAA5491H/nnn QFP80 plastic quad flat package; 80 leads (lead length

SOT318-2 32 kbytes and external

1.95 mm); body 14 × 20 × 2.8 mm
SAA5297PS/nnn SDIP52 plastic shrink dual in-line package; 52 leads
SAA5297APS/nnn

(600 mil)

SOT247-1 64 kbytes

SAA5497PS/nnn
SAA5297AH/nnn QFP80 plastic quad flat package; 80 leads (lead length
SAA5497H/nnn

1.95 mm); body 14 × 20 × 2.8 mm

SOT318-2 64 kbytes or external

Note

1. ‘nnn’ is a three-digit number uniquely referencing the microcontroller program mask and OSD mask.

4 QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V
V
V
f

xtal

T
I

DDM

DDA
DDM
DDT

amb

supply voltages 4.5 5.0 5.5 V

crystal frequency − 12 − MHz
operating ambient temperature −20 − +70 °C
microcontroller supply current − 20 35 mA

SAA5290, SAA5290A, SAA5291, SAA5291A and SAA5491

I

DDA

I

DDT

analog supply current − 35 50 mA
teletext supply current − 40 65 mA

SAA5296, SAA5296A, SAA5297, SAA5297A, SAA5496 and SAA5497

I

DDA

I

DDT

analog supply current − 35 50 mA
teletext supply current − 50 80 mA

1998 Dec 14 5

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

5 BLOCK DIAGRAM

handbook, full pagewidth

CVBS0,
CVBS1

XTALIN

XTALOUT

OSCGND

RESET

OSCILLATOR

8051

MICRO-

CONTROLLER

int

SAA5x9x

data

address

BLACK IREF

DATA SLICER

ACQUISITION

TIMING

512 × 8

AUX RAM

2

I

C-BUS

INTERFACE

PORT 1 PORT 0 PORT 3 PORT 2

TIMER/

CTRS

V

DDAVDDMVDDTVSSAVSSD

TELETEXT

ACQUISITION

32K × 8

ROM

256 × 8

RAM

ADC

DISPLAY

PAGE

RAM

DISPLAY

TIMING

TEXT

INTERFACE

PWM

R, G, B,
VDS,
COR

VSYNC
HSYNC
FRAME

MGK462

P1.0 to P1.7 P0.0 to P0.7 P3.0 to P3.7 P2.0 to P2.7

Fig.1 Block diagram.

1998 Dec 14 6

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

6 PINNING INFORMATION

6.1 Pinning

handbook, halfpage

P2.0/TPWM
P2.1/PWM0
P2.2/PWM1
P2.3/PWM2
P2.4/PWM3
P2.5/PWM4
P2.6/PWM5
P2.7/PWM6

P3.0/ADC0
P3.1/ADC1
P3.2/ADC2
P3.3/ADC3

1
2
3
4
5
6
7
8

9
10
11
12

V

13

SSD
P0.0

P0.1
P0.2
P0.3

14
15
16
17

SAA5x9x

52
51
50
49
48
47
46
45
44
43
42
41
40
39
38

37
36

P1.5
P1.4
P1.7/SDA
P1.6/SCL
P1.3/T1
P1.2/INT0
P1.1/T0
P1.0/INT1
V

DDM

RESET
XTALOUT
XTALIN
OSCGND

V

DDT

V

DDA
VSYNC
HSYNC

18

P0.4

19

P0.5

20

P0.6

21

P0.7

V

22

SSA

IREF

23
24

25
26

CVBS0
CVBS1
BLACK

Fig.2 Pin configuration (SDIP52).

1998 Dec 14 7

MGK461

35

34
33
32
31

30
29
28
27

VDS

R
G
B
RGBREF

P3.4/PWM7
COR

V

SSD

FRAME

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

handbook, full pagewidth

P2.6/PWM5
P2.7/PWM6

P3.0/ADC0

P3.1/ADC1
P3.2/ADC2

P3.3/ADC3
P2.5/PWM4
P2.4/PWM3

n.c.

RD

WR

V

SSD

EA
P0.0
P0.1
P0.2

PSEN

ALE

REF−

P0.3
P0.4
P3.7

n.c.

P0.5

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

P2.3/PWM2

P2.2/PWM1

80

79

25

26

P0.6

P0.7

P2.1/PWM0

P2.0/TPWM

78

77

27

28

SSA

V

CVBS0

AD7
76

29

CVBS1

AD6
75

30

BLACK

AD5

AD4

74

73

SAA5x9x

31

32

A15

IREF

AD3
72

33

A14

AD2
71

34

A13

AD1
70

35

A12

AD0
69

36

V

FRAME

P1.5
68

37

SSD

P1.4
67

38

COR

P1.7/SDA

P1.6/SCL

66

65

39

40
B

RGBREF

P1.1/T0

64
63

P1.0/INT1

62

V
P1.3/T1

61
60

P1.2/INT0

59

RESET

58

XTALOUT

57

XTALIN

56

OSCGND

55

A8

54

A9

53

A10

52

A11

51

V

50

REF+

49

V

48

P3.6

47

VSYNC

46

P3.5

45

HSYNC

44

P3.4/PWM7

43

VDS

42

R

41

G

MGL157

DDM

DDT

DDA

Fig.3 Pin configuration (QFP80).

1998 Dec 14 8

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

6.2 Pin description Table 1 SDIP52 and QFP80 packages

SYMBOL

DESCRIPTION

SDIP52 QFP80

P2.0/TPWM 1 77 Port 2: 8-bit open-drain bidirectional port with alternative functions.

PIN

P2.1/PWM0 2 78
P2.2/PWM1 3 79

P2.0/TPWM is the output for the 14-bit high precision PWM.
P2.1/PWM0 to P2.7/PWM6 are the outputs for the 6-bit PWMs 0 to 6.

P2.3/PWM2 4 80
P2.4/PWM3 5 9
P2.5/PWM4 6 8
P2.6/PWM5 7 1
P2.7/PWM6 8 2
P3.0/ADC0 9 3 Port 3: 8-bit open-drain bidirectional port with alternative functions.
P3.1/ADC1 10 5
P3.2/ADC2 11 6

P3.0/ADC0 to P3.3/ADC3 are the inputs for the software ADC facility.
P3.4/PWM7 is the output for the 6-bit PWM7.

P3.3/ADC3 12 7
P3.4/PWM7 30 44
P3.5 − 46
P3.6 − 48
P3.7 − 22
V

SSD

13 12 Digital ground.
P0.0 14 14 Port 0: 8-bit open-drain bidirectional port.
P0.1 15 15

P0.5 and P0.6 have 10 mA current sinking capability for direct drive of LEDs.

P0.2 16 16
P0.3 17 20
P0.4 18 21
P0.5 19 24
P0.6 20 25
P0.7 21 26
V

SSA

22 27 Analog ground.
CVBS0 23 28 Composite video inputs; a positive-going 1 V (peak-to-peak) input is required,
CVBS1 24 29
BLACK 25 30 Video black level storage input: this pin should be connected to V

connected via a 100 nF capacitor.

SSA

via a

100 nF capacitor.

IREF 26 31 Reference current input for analog circuits, connected to V

via a 27 kΩ

SSA

resistor.

FRAME 27 36 De-interlace output synchronised with the VSYNC pulse to produce a

non-interlaced display by adjustment of the vertical deflection circuits.

V

SSD

28 37 Internally connected; this pin should be connected to digital ground.
COR 29 38 Open-drain, active LOW output which allows selective contrast reduction of

the TV picture to enhance a mixed mode display.

1998 Dec 14 9

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

SYMBOL

DESCRIPTION

SDIP52 QFP80

RGBREF 31 39 DC input voltage to define the output HIGH level on the RGB pins.
B 32 40 Pixel rate output of the BLUE colour information.
G 33 41 Pixel rate output of the GREEN colour information.
R 34 42 Pixel rate output of the RED colour information.
VDS 35 43 Video/data switch push-pull output for dot rate fast blanking.
HSYNC 36 45 Schmitt trigger input for a TTL level version of the horizontal sync pulse; the

polarity of this pulse is programmable by register bit TXT1.H POLARITY.

VSYNC 37 47 Schmitt trigger input for a TTL level version of the vertical sync pulse;

the polarity of this pulse is programmable by register bit TXT1.V POLARITY.

PIN

V
V

DDA
DDT

38 49 +5 V analog power supply.

39 51 +5 V teletext power supply.
OSCGND 40 56 Crystal oscillator ground.
XTALIN 41 57 12 MHz crystal oscillator input.
XTALOUT 42 58 12 MHz crystal oscillator output.
RESET 43 59 For a recommended reset circuit refer to the application diagram shown in

Fig.29.

V

DDM

44 62 +5 V microcontroller power supply.
P1.0/INT1 45 63 Port 1: 8-bit open-drain bidirectional port with alternate functions.
P1.1/T0 46 64
P1.2/INT0 47 60
P1.3/T1 48 61
P1.6/SCL 49 65

P1.0/INT1 is external interrupt 1 which can be triggered on the rising and
falling edge of the pulse.

P1.1/T0 is the counter/timer 0.
P1.2/INT0 is external interrupt 0.

P1.7/SDA 50 66
P1.4 51 67
P1.5 52 68

P1.3/T1 is the counter/timer 1.
P1.6/SCL is the serial clock input for the I

2

C-bus.

P1.7/SDA is the serial data port for the I2C-bus.
REF+ − 50 Positive reference voltage for software driven ADC.
REF−−19 Negative reference voltage for software driven ADC.
RD − 10 Read control signal to external Data Memory.
WR − 11 Write control signal to external Data Memory.
PSEN − 17 Enable signal for external Program Memory.
ALE − 18 External latch enable signal; active HIGH.
EA − 13 Control signal used to select external (LOW) or internal (HIGH) Program

Memory.
AD0 to AD7 − 69 to 76 Address lines A0 to A7 multiplexed with data lines D0 to D7.
A8 to A15 − 55 to 52,

Address lines A8 to A15.

35 to 32

1998 Dec 14 10

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

7 FUNCTIONAL DESCRIPTION

7.1 Microcontroller

The functionality of the microcontroller used in this family
is described here with reference to the industry-standard
80C51 microcontroller. A full description of its functionality
can be found in the

Data Handbook IC20”

“80C51-Based 8-Bit Microcontrollers;

. Using the 80C51 as a reference,

the changes made to this family fall into two categories:

• Features not supported by the SAA529x, SAA529xA or
SAA549x devices

• Features found on the SAA529x, SAA529xA or
SAA549x devices but not supported by the 80C51.

7.2 80C51 features not supported

7.2.1 INTERRUPT PRIORITY

The IP SFR is not implemented and all interrupts are
treated with the same priority level. The normal
prioritisation of interrupts is maintained within the level.

Table 2 Interrupts and vectors address

INTERRUPT SOURCE VECTOR ADDRESS

Reset 000H
External INT0 003H
Timer 0 00BH
External INT1 013H
Timer 1 01BH

2

Byte I

C-bus 02BH

2

Bit I

C-bus; note 1 053H

Note

1. SAA5290, SAA5290A, SAA5291, SAA5291A and

SAA5491 only.

7.2.2 O

FF-CHIP MEMORY

The SDIP52 version does not support the use of off-chip
program memory or off-chip data memory.

7.2.3 I

DLE AND POWER-DOWN MODES

As Idle and Power-down modes are not supported, their
respective bits in PCON are not available.

7.2.4 UART F

UNCTION

7.3 Additional features

The following features are provided in addition to the
standard 80C51 features.

7.3.1 I

NTERRUPTS

The external INT1 interrupt is modified to generate an
interrupt on both the rising and falling edges of the INT1
pin, when EX1 bit is set. This facility allows for software
pulse width measurement for handling of a remote control.

7.3.2 B

IT LEVEL I

2

C-BUS INTERFACE

For reasons of compatibility with SAA5290 and
SAA5290A, the SAA5291, SAA5291A and SAA5491
contain a bit level serial I/O which supports the I2C-bus.
P1.6/SCL and P1.7/SDA are the serial I/O pins. These two
pins meet the I2C-bus specification

to use it (including specifications)”

“The I2C-bus and how

concerning the input
levels and output drive capability. Consequently, these two
pins have an open-drain output configuration. All the four
following modes of the I2C-bus are supported.

• Master transmitter

• Master receiver

• Slave transmitter

• Slave receiver.

Three SFRs support the function of the bit-level I2C-bus
hardware: S1INT, S1BIT and S1SCS and are enabled by
setting register bit TXT8.I2C SELECT to logic 0.

7.3.3 B

YTE LEVEL I

2

C-BUS INTERFACE

The byte level serial I/O supports the I2C-bus protocol.
P1.6/SCL and P1.7/SDA are the serial I/O pins. These two
pins meet the I2C-bus specification concerning the input
levels and output drive capability. Consequently, these two
pins have an open-drain output configuration.

The byte level I2C-bus serial port is identical to the I2C-bus
serial port on the 8xC552. The operation of the subsystem
is described in detail in the 8xC552 data sheet found in

“80C51-Based 8-Bit Microcontrollers; Data Handbook
IC20”

.

Four SFRs support the function of the byte level I2C-bus
hardware, they are S1CON, S1STA, S1DAT and S1ADR
and are enabled by setting register bit TXT8.I2C SELECT
to logic 1.

The 80C51 UART is not available. As a consequence the
SCON and SBUF SFRs are removed and the ES bit in the
IE SFR is unavailable.

1998 Dec 14 11

7.3.4 LED

SUPPORT

Port pins P0.5 and P0.6 have a 10 mA current sinking
capability to enable LEDs to be driven directly.

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

7.3.5 6-BIT PWM DACS
Eight 6-bit DACs are available to allow direct control of analog parts of the television.
Each low resolution 6-bit DAC is controlled by its associated Special Function Register (PWM0 to PWM7). The PWM

outputs are alternative functions of Port 2 and Port 3.4. The PWE bit in the SFR for the port corresponding to the PWM
output should be set to logic 1 for correct operation of the PWM output, e.g. if PWM0 is to be used, P2.1 should be set
to logic 1 setting the port pin to high-impedance.

7.3.5.1 Pulse Width Modulator Registers (PWM0 to PWM7)

Table 3 Pulse Width Modulator Registers (see Table 10 for addresses)

76543210

PWE − PV5 PV4 PV3 PV2 PV1 PV0

Table 4 Description of PWMn bits (n=0to7)

BIT SYMBOL DESCRIPTION

7 PWE If PWE is set to a logic 1, the corresponding PWM is active and controls its assigned

port pin. If PWE is set to a logic 0, the port pin is controlled by the corresponding bit in

the port SFR.
6 − Not used.
5 PV5 The output of the PWM is a pulse of period 21.33 µs with a pulse HIGH time determined

4 PV4
3 PV3
2 PV2
1 PV1
0 PV0

by the binary value of these 6-bits multiplied by 0.33 µs. PV5 is the most significant bit.

1998 Dec 14 12

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

7.3.6 14-BIT PWM DAC
One 14-bit DAC is available to allow direct control of

analog sections of the television. The 14-bit PWM is
controlled using Special Function Registers TDACL and
TDACH.

The output of the TPWM is a pulse of period 42.66 µs.
The 7 most significant bits, TDACH.TD13 (MSB) to
TDACH.TD8 and TDACL.TD7, alter the pulse width
between 0 and 42.33 µs, in much the same way as in the
6-bit PWMs.

The 7 least significant bits, TDACL.TD6 to TDACL.TD0
(LSB), extend certain pulses by a further 0.33 µs, e.g. if the
7 least significant bits are given the value 01H, then
1 in 128 cycles is extended. If the 7 least significant bits
are given the value 02H, then 2 in 128 cycles is extended,
and so forth.

The TPWM will not start to output a new value until after
writing a value to TDACH. Therefore, if the value is to be
changed, TDACL should be written to before TDACH.

7.3.6.1 TPWM High Byte Register (TDACH)

Table 5 TPWM High Byte Register (SFR address D3H)

76543210

PWE − TD13 TD12 TD11 TD10 TD9 TD8

Table 6 Description of TDACH bits

BIT SYMBOL DESCRIPTION

7 PWE If PWE is set to a logic 1, the TPWM is active and controls port line P2.0. If PWE is set

to a logic 0, the port pin is controlled by the corresponding bit in the port SFR.

6 − Not used.
5 TD13 These 6-bits along with bit TD7 in the TDACL register control the pulse width period.
4 TD12
3 TD11
2 TD10
1 TD9
0 TD8

TD13 is the most significant bit.

7.3.6.2 TPWM Low Byte Register (TDACL)

Table 7 TPWM Low Byte Register (SFR address D2H)

76543210

TD7 TD6 TD5 TD4 TD3 TD2 TD1 TD0

Table 8 Description of TDACL bits

BIT SYMBOL DESCRIPTION

7 TD7 This bit is used with bits TD13 to TD8 in the TDACH register to control the pulse width

period.

6 to 0 TD6 to TD0 These 7-bits extend certain pulses by a further 0.33 µs.

1998 Dec 14 13

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

7.3.7 SOFTWARE ADC
Up to 4 successive approximation ADCs can be

implemented in software by making use of the on-chip 8-bit
DAC and multiplexed voltage comparator. The software
ADC uses 4 analog inputs which are multiplexed with
P3.0 to P3.3.

Table 9 ADC input channel selection

CH1 CH0 INPUT PIN

0 0 P3.3/ADC3
0 1 P3.0/ADC0
1 0 P3.1/ADC1
1 1 P3.2/ADC2

The control of the ADC is achieved using the Special
Function Registers SAD and SADB.

SAD.CH1 and SAD.CH0 select one of the four inputs to
pass to the comparator. The other comparator input
comes from the DAC, whose value is set by SAD.SAD7
(MSB) to SAD.SAD4 and SADB.SAD3 to SADB.SAD0
(LSB).

The setting of the value SAD.SAD7 to SAD.SAD4 must be
performed at least 1 instruction cycle before the setting of
SAD.ST to ensure comparison is made using the correct
SAD.SAD7 to SAD.SAD4 value.

The output of the comparator is SAD.VHI, and is valid
after 1 instruction cycle following the setting of SAD.ST to
a logic 1.

handbook, halfpage

P3.0
P3.1

MULTIPLEXER

P3.2
P3.3

CH1, CH0

SAD7 to SAD0

ST C1

8-BIT DAC

1D

REF+REF−

VH1

MGL115

Fig.4 SAD block diagram.

1998 Dec 14 14

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1998 Dec 14 15

7.4 Microcontroller interfacing

The 80C51 communicates with the peripheral functions using Special Function Registers (SFRs) which are addressed as RAM locations. The registers
in the teletext decoder appear as normal SFRs in the microcontroller memory map, but are written to using an internal serial bus. The SFR map is given
in Table 10.

7.4.1 SPECIAL FUNCTION REGISTER MAP
Table 10 Special Function Register map; note 1

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

SYMBOL NAME

(2)

ACC

(2)

B

Accumulator E0 E7 E6 E5 E4 E3 E2 E1 E0 00

B register F0 F7 F6 F5 F4 F3 F2 F1 F0 00

DPTR Data Pointer

(2 bytes)

DPH High byte
DPL Low byte

IE

(2)(3)

Interrupt
Enable

(2)

P0

(2)

P1

(2)

P2

(2)(3)

P3

PCON

Port 0 80 87 86 85 84 83 82 81 80 FF

Port 1 90 97 96 95 94 93 92 91 90 FF

Port 2 A0 A7 A6 A5 A4 A3 A2 A1 A0 FF

Port 3 B0 B7 B6 B5 B4 B3 B2 B1 B0 FF

(3)

Power Control 87 − ARD −−

DIRECT

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

ADDR.

(HEX)

76543210

−−−−−−−−

−−−−−−−−

83 −−−−−−−−00
82 −−−−−−−−00

A8 AF AE AD AC AB AA A9 A8 00

EA ES1 ES2 −

(1)

ET1 EX1 ET0 EX0

−−−−−−−−

−−−−−−−−

−−−−−−−−

−−−−−−−−

(1)

GF1 GF0 −−10

VALUE

(HEX)

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1998 Dec 14 16

SYMBOL NAME

(2)

PSW

Program
Status Word

(3)

PWM0

Pulse Width

DIRECT

ADDR.

(HEX)

76543210

D0 D7 D6 D5 D4 D3 D2 D1 D0 00

CY AC F0 RS1 RS0 OV −

D5 PWE −

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

(1)

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

P

Modulator 0

PWM1

(3)

Pulse Width

D6 PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 1

PWM2

(3)

Pulse Width

D7 PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 2

PWM3

(3)

Pulse Width

DC PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 3

PWM4

(3)

Pulse Width

DD PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 4

PWM5

(3)

Pulse Width

DE PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 5

PWM6

(3)

Pulse Width

DF PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 6

PWM7

(3)

Pulse Width

D4 PWE −

(1)

PV5 PV4 PV3 PV2 PV1 PV0 40

Modulator 7

S1ADR

(3)

Serial

2

I

C-bus

DB ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 GC 00

address

S1CON

(2)(3)(4)

S1SCS

(2)(3)(5)

S1DAT

S1INT

(3)(4)

(3)(5)

Serial

2

I

C-bus

Serial

2

I

C-bus

Serial

2

I

C-bus data

Serial

2

I

C-bus

D8 DF DE DD DC DB DA D9 D8

CR2 ENSI STA STO SI AA CR1 CR0 00

D8 DF DE DD DC DB DA D9 D8

SDI SCI CLH BB RBF WBF STR ENS E0

DA DAT7 DAT6 DAT5 DAT4 DAT3 DAT2 DAT1 DAT0 00

DA SI −−−−−−−7F

Interrupt

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

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1998 Dec 14 17

SYMBOL NAME

(3)(4)

S1ST A

S1BIT

(2)(3)

SAD

(3)(5)

Serial

2

I

C-bus status

Serial

2

I

C-bus data

Software
ADC (MSB)

(2)(3)

SADB

Software
ADC (LSB)

DIRECT

ADDR.

(HEX)

76543210

D9 STAT4 STAT3 STAT2 STAT1 STAT0 0 0 0 F8

D9 SDO/SDI −−−−−−−7F

E8 EF EE ED EC EB EA E9 E8 00

VHI CH1 CH0 ST SAD7 SAD6 SAD5 SAD4

98 9F 9E 9D 9C 9B 9A 99 98 00

−−−−SAD3 SAD2 SAD1 SAD0

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

SP Stack Pointer 81 8F 8E 8D 8C 8B 8A 89 88 07
TCON

(2)

Timer/counter

88 TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 00

control

TDACH

TPWM

D3 PWE −

(1)

TD13 TD12 TD11 TD10 TD9 TD8 40

High byte

TDACL TPWM

D2 TD7 TD6 TD5 TD4 TD3 TD2 TD1 TD0 00

Low byte

TH0 Timer 0

8C TH07 TH06 TH05 TH04 TH03 TH02 TH01 TH00 00

High byte

TH1 Timer 1

8D TH17 TH16 TH15 TH14 TH13 TH12 TH11 TH10 00

High byte

TL0 Timer 0

8A TL07 TL06 TL05 TL04 TL03 TL02 TL01 TL00 00

Low byte

TL1 Timer 1

8B TL17 TL16 TL15 TL14 TL13 TL12 TL11 TL10 00

Low byte

TMOD Timer/counter

mode

TXT0

(3)(6)

Teletext
Register 0

89 GATE C/

TM1M0GATEC/TM1M000

Timer 1 Timer 0

C0 X24 POSN DISPLAY

X24

AUTO

FRAME

DISABLE

HDR

ROLL

DISPLA Y

ST ATUS

ROW

DISABLE

FRAME

VPS ON INV ON 00

ONL Y

(3)(6)

TXT1

Teletext
Register 1

C1 EXT PKT

OFF

8−BIT ACQ OFF X26

OFF

FULL

FIELD

FIELD

POLARITYHPOLARITYVPOLARITY

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

00

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1998 Dec 14 18

SYMBOL NAME

(3)(6)

TXT2

Teletext

DIRECT

ADDR.

(HEX)

C2 −

76543210

(1)

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

REQ3 REQ2 REQ1 REQ0 SC2 SC1 SC0 00

Register 2

TXT3

(3)(6)

Teletext

C3 −

(1)

(1)

−

(1)

−

PRD4 PRD3 PRD2 PRD1 PRD0 00

Register 3

TXT4

TXT5

TXT6

TXT7

TXT8

TXT9

TXT10

(3)(6)

(3)(6)

(3)(6)

(3)(6)

(3)(6)

(3)(6)

(3)(6)

Teletext
Register 4

Teletext
Register 5

Teletext
Register 6

Teletext
Register 7

T eletext
Register 8

Teletext
Register 9

Teletext

C4 OSD

BANK

ENABLE

C5 BKGND

OUT

C6 BKGND

OUT

C7 STATUS

ROW TOP

C8 I2C

SELECT

C9 CURSOR

FREEZE

CA −

(1)

QUAD

WIDTH

ENABLE

BKGND IN COR OUT COR IN TEXT

BKGND IN COR OUT COR IN TEXT

CURSORONREVEAL TOP/

IDS

ENABLE

CLEAR

MEMORY.

(1)

−

EAST/
WEST

(1)

−

DISABLE

DBL HT

BOTTOM
DISABLE

SP ANISH

B MESH

ENABLE

OUT

OUT

DOUBLE

HEIGHT

PKT26

RECEIVE

D

C MESH
ENABLE

TRANS

ENABLE

TEXT IN PICTURE

ON OUT

TEXT IN PICTURE

ON OUT

BOX ON24BOX ON

1-23

WSS

WSS ON

RECEIVE

D

SHADOW

ENABLE

PICTURE

ON IN

PICTURE

ON IN

BOX ON

0

CVBS0/

CVBS1

A0 R4 R3 R2 R1 R0 00

C5 C4 C3 C2 C1 C0 00

Register 10

(3)(6)

TXT11

Teletext

CB D7 D6 D5 D4 D3 D2 D1 D0 00

Register 11

(3)(6)

TXT12

Teletext
Register 12

CC 625/525

SYNC

ROM

VER R4

ROM

VER R3

ROM

VER R2

ROM

VER R1

ROM VERR0TXT ON VIDEO

SIGNAL

QUALITY

(2)(3)

TXT13

(6)

TXT14

(3)(6)

Teletext
Register 13

Teletext

B8 BF BE BD BC BB BA B9 B8 00

VPS

RECEIVE

D

PAGE

CLEARIN

G

525

DISPLAY

525 TEXT 625

TEXT

PKT
8/30

FASTEXT TIB

CD −− −PAGE3 PAGE2 PAGE1 PAGE0 00

Register 14

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

00

03

03

00

00

0XXXX

X00B

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1998 Dec 14 19

SYMBOL NAME

(3)(6)

TXT15

Teletext

DIRECT

ADDR.

(HEX)

76543210

CE −−−−BLOCK3 BLOCK2 BLOCK1 BLOCK0 00

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

Register 15

(3)(6)

TXT16

Teletext

CF − Y2 Y1 Y0 −−X1 X0 00

Register 16

(3)(6)

TXT17

WSS1

(3)(6)

Teletext
Register 17

WSS
Register 1

B9 − FORCE

ACQ 1

FORCE

ACQ 0

FORCE

625

BA −−−WSS0 to

WSS3

FORCE

525

SCREEN

COL2

SCREEN

COL1

SCREEN

COL0

WSS3 WSS2 WSS1 WSS0 00

ERROR

WSS2

(3)(6)

WSS
Register 2

BB −−−WSS4 to

WSS7

WSS7 WSS6 WSS5 WSS4 00

ERROR

WSS3

CLUT

(3)(6)

(3)(6)

WSS
Register 3

CLUT
Register

BC WSS11 to

WSS13

ERROR

BD CLUT

ENABLE

WSS13 WSS12 WSS11 WSS8 to

WSS10

ERROR

CLUT

ADDRESS

B1 or − B0 or − G1 or

ENTRY 3

WSS10 WSS9 WSS8 00

G0 or

ENTRY 2

R1 or

ENTRY 1

R0 or

ENTRY 0

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

00

00

Notes

1. These bits are inactive and must be written to logic 0 for future compatibility.

2. SFRs are bit addressable.

3. SFRs are modified or added to the 80C51 SFRs.

2

4. This register used for Byte Orientated I

C-bus, TXT8.I2C SELECT = 1.

5. This register used for Bit Orientated I2C-bus, TXT8.I2C SELECT = 0.

6. Although the Teletext, WSS and CLUT registers are reset internally by hardware, it is advisable that these registers are explicitly reset by the
software following initial power-up and returning from the standby condition.

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

7.4.2 SPECIAL FUNCTION REGISTERS

Table 11 SFRs bit description

REGISTER FUNCTION

Interrupt Enable Register (IE)

EA disable all interrupts (logic 0) or use individual interrupt enable bits (logic 1)

2

ES1 bit I
ES2 byte I
ET1 enable timer 1 overflow interrupt (logic 1)
EX1 enable external interrupt 1 (logic 1)
ET0 enable timer 0 overflow interrupt (logic 1)
EX0 enable external interrupt 0 (logic 1)

Power Control Register (PCON)

ARD AUX-RAM disable bit. Disables the 512 bytes of internal AUX-RAM (logic 1);

GF1 general purpose flag 1
GF0 general purpose flag 0

C-bus interrupt enable (logic 1)

2

C-bus interrupt enable (logic 1)

all MOVX-instructions access the external data memory

Program Status Word (PSW)

CY carry flag
AC auxiliary carry flag
F0 flag 0
RS1,RS0 register bank select control bits
OV overflow flag
P parity flag

6-bit Pulse Width Modulator Control Registers (PWM0 to PWM7)

PWE activate this PWM and take control of respective port pin (logic 1)
PV5 to PV0 binary value sets high time of PWM output

Serial Interface Slave Address Register (S1ADR); note 1
ADR6 to ADR0 I

GC enables response to the I

2

C-bus slave address to which the device will respond

2

C-bus general call address
Serial Interface Control Register (S1CON); note 1
CR2 to CR0 clock rate bits

ENSI I

2

C-bus interface enable
STA start condition flag
STO stop condition flag
SI interrupt flag
AA assert acknowledge flag

1998 Dec 14 20

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

REGISTER FUNCTION

Serial Interface Data Register (S1DAT); note 1

2

DAT7 to DAT0 I
Serial Interface Status Register (S1STA) - READ only; note 1

STAT4 to STAT0 I
Serial Interface Data Register (S1BIT) - READ; note 2

SDI I
Serial Interface Data Register (S1BIT) - WRITE; note 2
SDO I
Serial Interface Interrupt Register (S1INT); note 2
SI I2C-bus interrupt flag

Serial Interface Control Register (S1SCS) - READ; note 2
SDI serial data input at SDA

SCI serial clock input at SCL
CLH clock LOW-to-HIGH transition flag
BB bus busy flag
RBF read bit finished flag
WBF write bit finished flag
STR clock stretching enable (logic 1)
ENS enable serial I/O (logic 1)

C-bus data

2

C-bus interface status

2

C-bus data bit input

2

C-bus data bit output

Serial Interface Control Register (S1SCS) - WRITE; note 2
SDO serial data output at SDA

SCO serial clock output at SCL
CLH clock LOW-to-HIGH transition flag
STR clock stretching enable (logic 1)
ENS enable serial I/O (logic 1)

Software ADC Control Register (SAD)

VHI comparator output indicating that analog input voltage greater than DAC voltage (logic 1)
CH1 and CH0 ADC input channel selection bits; see Table 11
ST initiate voltage comparison (logic 1); this bit is automatically reset to logic 0
SAD7 to SAD4 4 MSBs of DAC input value

1998 Dec 14 21

Philips Semiconductors Preliminary specification

Economy teletext and TV microcontrollers SAA5x9x family

REGISTER FUNCTION

Software ADC Control Register (SADB)

SAD3 to SAD0 4 LSBs of DAC input value

Timer/Counter Control Register (TCON)

TF1 Timer 1 overflow flag
TR1 Timer 1 run control bit
TF0 Timer 0 overflow flag
TR0 Timer 0 run control bit
IE1 interrupt 1 edge flag
IT1 interrupt 1 type control bit
IE0 interrupt 0 edge flag
IT0 interrupt 0 type control bit

14-bit PWM MSB Register (TDACH)

PWE activate this 14-bit PWM and take over port pin (logic 1)
TD13 to TD8 6 MSBs of 14-bit number to be output by the 14-bit PWM

14-bit PWM LSB Register (TDACL)

TD7 to TD0 8 LSBs of 14-bit number to be output by the 14-bit PWM

Timer 0 High byte (TH0)

TH07 to TH00 8 MSBs of Timer 0 16-bit counter

Timer 1 High byte (TH1)

TH17 to TH10 8 MSBs of Timer 1 16-bit counter

Timer 0 Low byte (TL0)

TL07 to TL00 8 LSBs of Timer 0 16-bit counter

Timer 1 Low byte (TL1)

TL17 to TL10 8 LSBs of Timer 1 16-bit counter

Timer/Counter Mode Control Register (TMOD)

GATE gating control
C/

T counter or timer selector

M1, M0 mode control bits

1998 Dec 14 22