Philips SAA5296AH, SAA5296APS, SAA5291AH, SAA5291APS, SAA5291H Datasheet

...

INTEGRATED CIRCUITS

DATA SH EET

SAA5x9x family

Economy teletext and TV microcontrollers

Preliminary speciﬁcation File under Integrated Circuits, IC02

1997 Jul 07

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 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 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 (SAA5291, SAA5291A, 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 On Screen Display symbols

9.7 Language group identification

9.8 525-line operation

9.9 On Screen Display characters

9.10 Control characters

9.11 Quadruple width display (SAA549x)

9.12 Page attributes

9.13 Display modes

9.14 On Screen Display boxes

9.15 Screen colour

9.16 Redefinable Colours (SAA549x)

9.17 Cursor

9.18 Other display features

9.19 Display timing

9.20 Horizontal timing

9.21 Vertical timing

9.22 Display position

9.23 Clock generator 10 CHARACTER SETS

10.1 Pan-European

10.2 Russian

10.3 Greek/Turkish

10.4 Arabic/English/French

10.5 Thai

10.6 Arabic/Hebrew 11 LIMITING VALUES 12 CHARACTERISTICS 13 CHARACTERISTICS FOR THE I2C-BUS

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

18.1 Introduction

18.2 SDIP

18.3 QFP 19 DEFINITIONS 20 LIFE SUPPORT APPLICATIONS 21 PURCHASE OF PHILIPS I2C COMPONENTS

1997 Jul 07 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 stand-by

• 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

LED’s etc.

• I

C-bus interface

• External ROM and RAM capability on QFP80 package version.

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

• 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.

2 GENERAL DESCRIPTION

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)

• Automatic detection of FASTEXT transmission

• Real-time packet 26 engine for processing accented

(and other) characters

• Comprehensive Teletext language coverage

• Video signal quality detector.

1997 Jul 07 3

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.

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

(600 mil) SAA5291PS/nnn SAA5291APS/nnn SAA5296PS/nnn SAA5296APS/nnn

SDIP52

plastic shrink dual in-line package; 52 leads

(600 mil) SAA5491PS/nnn

SAA5496PS/nnn SAA5291H/nnn SAA5291AH/nnn SAA5296H/nnn SAA5296AH/nnn

QFP80

plastic quad ﬂat package; 80 leads (lead length

1.95 mm); body 14 × 20 × 2.8 mm

SAA5491H/nnn SAA5496H/nnn SAA5297PS/nnn

SDIP52

plastic shrink dual in-line package; 52 leads

(600 mil) SAA5497PS/nnn

SAA5297H/nnn

QFP80

plastic quad ﬂat package; 80 leads (lead length

1.95 mm); body 14 × 20 × 2.8 mm

SAA5497H/nnn

PROGRAM

MEMORY (ROM)

SOT247-1 16 kbytes

SOT247-1 32 kbytes

SOT318-2 32 kbytes and external

SOT247-1 64 kbytesSAA5297APS/nnn

SOT318-2 64 kbytes or externalSAA5297AH/nnn

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, SAA5291, SAA5291A and SAA5491

DDA

DDT

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

SAA5296, SAA5296A, SAA5297, SAA5297A, SAA5496 and SAA5497

DDA

DDT

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

1997 Jul 07 4

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

C-BUS

INTERFACE

PORT 1 PORT 0 PORT 3 PORT 2

TIMER/

CTRS

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.

1997 Jul 07 5

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

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

DDT

DDA VSYNC HSYNC

P0.4

P0.5

P0.6

P0.7

SSA

IREF

23 24

25 26

CVBS0 CVBS1 BLACK

Fig.2 Pin configuration (SDIP52).

1997 Jul 07 6

MGK461

34 33 32 31

30 29 28 27

VDS

R G B RGBREF

P3.4/PWM7 COR

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.

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

P0.6

P0.7

P2.1/PWM0

P2.0/TPWM

SSA

CVBS0

AD7 76

CVBS1

AD6 75

BLACK

AD5

AD4

SAA5x9x

A15

IREF

AD3 72

A14

AD2 71

A13

AD1 70

A12

AD0 69

FRAME

P1.5 68

SSD

P1.4 67

COR

P1.7/SDA

P1.6/SCL

40 B

RGBREF

P1.1/T0

64 63

P1.0/INT1

V P1.3/T1

61 60

P1.2/INT0

RESET

XTALOUT

XTALIN

OSCGND

A10

A11

REF+

P3.6

VSYNC

P3.5

HSYNC

P3.4/PWM7

VDS

MGL157

DDM

DDT

DDA

Fig.3 Pin configuration (QFP80).

1997 Jul 07 7

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.

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.

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.

1997 Jul 07 8

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

SYMBOL

DESCRIPTION

SDIP52 QFP80

LRGBREF 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.

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 If the reset input is HIGH for at least 3 machine cycles (36 oscillator periods)

while the oscillator is running, the device is reset; this pin should be

via a 2.2 µF capacitor.

DDM

connected to V

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/INT1 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

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

1997 Jul 07 9

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

Byte I

C-bus 02BH

Bit I

C-bus; note 1 053H

Note

1. SAA5290, 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

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.

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

C-BUS INTERFACE

For reasons of compatibility with SAA5290, 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

specifications)”

“The I2C-bus and how to use it (including

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

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.

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.

1997 Jul 07 10

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 should be set to logic 1 for correct operation of the PWM, 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.

1997 Jul 07 11

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.

1997 Jul 07 12

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

REF+REF−

VH1

MGL115

Fig.4 SAD block diagram.

1997 Jul 07 13

1997 Jul 07 14

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.

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

7.4.1 S

PECIAL FUNCTION REGISTER MAP

Table 10 Special Function Register map; note 1

DIRECT

SYMBOL NAME

(2)

ACC

Accumulator E0 E7 E6 E5 E4 E3 E2 E1 E0 00

ADDR.

(HEX)

76543210

−−−−−−−−

(2)

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

−−−−−−−−

DPTR Data Pointer

(2 bytes)

DPH High byte DPL Low byte

(2)(3)

Interrupt Enable

(2)

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

83 −−−−−−−−00 82 −−−−−−−−00 A8 AF AE AD AC AB AA A9 A8 00

EA ES1 ES2 * ET1 EX1 ET0 EX0

−−−−−−−−

(2)

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

−−−−−−−−

(2)

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

−−−−−−−−

(2)(3)

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

−−−−−−−−

(3)

PCON

Power Control 87 − ARD − * GF1 GF0 −−10

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

VALUE

(HEX)

1997 Jul 07 15

SYMBOL NAME

(2)

PSW

(3)

PWM0

(3)

PWM1

(3)

PWM2

(3)

PWM3

(3)

PWM4

(3)

PWM5

(3)

PWM6

(3)

PWM7

S1ADR

(3)

S1CON

(2)(3)(4)

S1SCS

(2)(3)(5)

S1DAT

(3)(4)

S1INT

(3)(5)

Program Status Word

Pulse Width Modulator 0

Pulse Width Modulator 1

Pulse Width Modulator 2

Pulse Width Modulator 3

Pulse Width Modulator 4

Pulse Width Modulator 5

Pulse Width Modulator 6

Pulse Width Modulator 7

Serial I2C-bus address

Serial I2C-bus control

Serial I2C-bus data

Serial I2C-bus Interrupt

DIRECT

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

ADDR.

(HEX)

76543210

D0 D7 D6 D5 D4 D3 D2 D1 D0 00

CY AC F0 RS1 RS0 OV * P

D5 PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

D6 PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

D7 PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

DC PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

DD PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

DE PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

DF PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

D4 PWE * PV5 PV4 PV3 PV2 PV1 PV0 40

DB ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0 GC 00

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

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

1997 Jul 07 16

SYMBOL NAME

S1STA

(3)(4)

S1BIT

(3)(5)

SAD

(2)(3)

SADB

(2)(3)

Serial I2C-bus status

Serial I2C-bus data

Software ADC (MSB)

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 * TD13 TD12 TD11 TD10 TD9 TD8 40

High byte

TDACL TPWM

D2 TD7 TD6 TD5 TD4 TD3 TD2 TD1 TD0 00

Low byte

TH0 Timer0

8C TH07 TH06 TH05 TH04 TH03 TH02 TH01 TH00 00

High byte

TH1 Timer1

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

(3)

TXT0

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)

TXT1

Teletext Register 1

C1 EXT PKT

OFF

8−BIT ACQ OFF X26

OFF

FULL

FIELD

POLARITYHPOLARITYVPOLARITY

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

1997 Jul 07 17

SYMBOL NAME

(3)

TXT2

(3)

TXT3

(3)

TXT4

(3)

TXT5

(3)

TXT6

(3)

TXT7

(3)

TXT8

(3)

TXT9

(3)

TXT10

(3)

TXT11

(3)

TXT12

TXT13

(2)(3)

(3)

TXT14

Teletext Register 2

Teletext Register 3

Teletext Register 4

Teletext Register 5

Teletext Register 6

Teletext Register 7

T eletext Register 8

Teletext Register 9

Teletext Register 10

Teletext Register 11

Teletext Register 12

Teletext Register 13

Teletext Register 14

DIRECT

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

ADDR.

(HEX)

76543210

C2 * REQ3 REQ2 REQ1 REQ0 SC2 SC1 SC0 00

C3 * * * PRD4 PRD3 PRD2 PRD1 PRD0 00

C4 OSD

BANK

ENABLE

C5 BKGND

OUT

C6 BKGND

OUT

C7 STATUS

ROW TOP

C8 I2C

SELECT

C9 CURSOR

FREEZE

QUAD

WIDTH

ENABLE

BKGND IN COR OUT COR IN TEXT

CURSORONREVEAL TOP/

IDS

ENABLE

CLEAR

MEMORY.

EAST/ WEST

* DISABLE

DISABLE

DBL HT

BOTTOM

SP ANISH

B MESH

ENABLE

OUT

DOUBLE

HEIGHT

PKT26

RECEIVE

C MESH ENABLE

TRANS

ENABLE

TEXT IN PICTURE

ON OUT

TEXT IN PICTURE

ON OUT

BOX ON24BOX ON

1-23

WSS

WSS ON

RECEIVE

SHADOW

ENABLE

PICTURE

ON IN

PICTURE

ON IN

BOX ON

CVBS0/

CVBS1

A0 R4 R3 R2 R1 R0 00

CA * * C5 C4 C3 C2 C1 C0 00

CB D7 D6 D5 D4 D3 D2 D1 D0 00

CC 625/525

SYNC

ROM

VER R4

ROM

VER R3

ROM

VER R2

ROM

VER R1

ROM VERR0TXT ON VIDEO

SIGNAL

QUALITY

B8 BF BE BD BC BB BA B9 B8 00

VPS

RECEIVE

PAGE

CLEARIN

525

DISPLAY

525 TEXT 625

TEXT

PKT 8/30

FASTEXT TIB

CD −− −PAGE3 PAGE2 PAGE1 PAGE0 00

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

VALUE

(HEX)

0XXXX

X00B

1997 Jul 07 18

SYMBOL NAME

(3)

TXT15

Teletext

DIRECT

ADDR.

(HEX)

76543210

CE −−−−BLOCK3 BLOCK2 BLOCK1 BLOCK0 00

BIT ADDRESS, SYMBOL OR ALTERNATIVE PORT FUNCTION RESET

(3)

TXT16

Teletext

CF − Y2 Y1 Y0 −−X1 X0 00

(3)

TXT17

WSS1

(3)

Teletext Register 17

WSS Register 1

B9 − FORCE

ACQ 1

FORCE

ACQ 0

FORCE

625

BA −−−WSS0 to

WSS3

FORCE

WSS3 WSS2 WSS1 WSS0 00

ERROR

WSS2

(3)

WSS Register 2

BB −−−WSS4 to

WSS7

WSS7 WSS6 WSS5 WSS4 00

ERROR

WSS3

CLUT

(3)

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

Notes

1. The asterisk (*) indicates 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.

4. This register used for Byte Orientated I2C-bus, TXT8.I2C SELECT = 1.

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

525

VALUE

(HEX)

SCREEN

COL2

SCREEN

COL1

SCREEN

COL0

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

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

7.4.2 SPECIAL FUNCTION REGISTERS BIT DESCRIPTIONS

Table 11 SFRs bit description

Interrupt Enable Register (IE)

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

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)

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

C-bus slave address to which the device will respond

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

ENSI I

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

1997 Jul 07 19

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

Serial Interface Data Register (S1DAT); note 1

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

C-bus interface status

C-bus data bit input

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 MSB’s of DAC input value

1997 Jul 07 20

Philips Semiconductors Preliminary speciﬁcation

Economy teletext and TV microcontrollers SAA5x9x family

Software ADC Control Register (SADB)

SAD3 to SAD0 4 LSB’s 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

1997 Jul 07 21

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