Philips msp34x2g Service Manual

MSP 34x2G
Multistandard
Sound Processor Family

Edition March 5, 2001
6251-520-2PD

PRELIMINARY DATA SHEET

MICRONAS

MICRONAS

with Dolby Surround
Pro Logic

MSP 34x2G PRELIMINARY DATA SHEET

Contents

Page Section Title

6 1. Introduction

6 1.1. Features
7 1.2. Features of the MSP 34x2G Family
7 1.3. MSP 34x2G Version List
8 1.4. MSP 34x2G Versions and their Application Fields

9 2. Functional Description

11 2.1. Architecture of the MSP 34x2G Family
11 2.2. Sound IF Processing
11 2.2.1. Analog Sound IF Input
11 2.2.2. Demodulator: Standards and Features
12 2.2.3. Preprocessing of Demodulator Signals
12 2.2.4. Automatic Sound Select
12 2.2.5. Manual Mode
14 2.3. Preprocessing for SCART and I
14 2.4. Source Selection and Output Channel Matrix
14 2.5. Audio Baseband Processing
14 2.5.1. Automatic Volume Correction (AVC)
14 2.5.2. Loudspeaker and Headphone Outputs
14 2.5.3. Subwoofer Output
14 2.5.4. Quasi-Peak Detector
15 2.5.5. Micronas Dynamic Bass (MDB)
15 2.5.5.1. Dynamic Amplification
15 2.5.5.2. Adding Harmonics
15 2.5.5.3. MDB Parameters
16 2.6. Surround Processing
16 2.6.1. Output Configuration
16 2.6.1.1. HP/CS Switch
16 2.6.1.2. Channel Configuration
16 2.6.2. Surround Processing Mode
16 2.6.2.1. Decoder Matrix
17 2.6.2.2. Surround Reproduction
17 2.6.2.3. Center Modes
17 2.6.2.4. Useful Combinations of Surround Processing Modes
18 2.6.3. Examples
19 2.6.4. Application Tips for using 3D-PANORAMA
19 2.6.4.1. Sweet Spot
19 2.6.4.2. Clipping
19 2.6.4.3. Loudspeaker Requirem ents
19 2.6.4.4. Cabinet Requirements
19 2.6.5. Input and Output Levels in Dolby Surround Pro Logic Mode
20 2.6.6. Subwoofer in Surround Mode
20 2.6.7. Equalizer in Surround Mode
20 2.7. SCART Signal Routing
20 2.7.1. SCART DSP In and SCART Out Select
20 2.7.2. Stand-by Mode
20 2.8. I

2

S Bus Interface

2

S Input Signals

2 Micronas

PRELIMINARY DATA SHEET

Contents, continued

Page Section Title

21 2.9. ADR Bus Interface
21 2.10. Digital Control I/O Pins and Status Change Indication
21 2.11. Clock PLL Oscillator and Crystal Specifications

22 3. Control Interface

22 3.1. Device and Subaddresses
22 3.1.1. Internal Hardware Error Handling
23 3.1.2. Description of CONTROL Register
23 3.1.3. Protocol Description
24 3.1.4. Proposals for General MSP 34x2G I

2

C Telegrams
24 3.1.4.1. Symbols
24 3.1.4.2. Write Telegrams
24 3.1.4.3. Read Telegrams
24 3.1.4.4. Examples

2

24 3.2. Start-Up Sequence: Power-Up and I

C Controlling
24 3.3. MSP 34x2G Programming Interface
24 3.3.1. User Registers Overview
28 3.3.2. Description of User Registers
29 3.3.2.1. STANDARD SELECT Register
29 3.3.2.2. Refresh of STANDARD SELECT Register
29 3.3.2.3. STANDARD RESULT Register

2

31 3.3.2.4. Write Registers on I
33 3.3.2.5. Read Registers on I2C Subaddress 11
34 3.3.2.6. Write Registers on I2C Subaddress 12
51 3.3.2.7. Read Registers on I2C Subaddress 13

C Subaddress 10

hex
hex
hex
hex

52 3.4. Programming Tips
52 3.5. Examples of Minimum Initialization Codes
52 3.5.1. SCART1 Input to Loudspeaker in Stereo Sound
52 3.5.2. B/G-FM (A2 or NICAM)
52 3.5.3. BTSC-Stereo
53 3.5.4. BTSC-SAP with SAP at Loudspeaker Channel
53 3.5.5. FM-Stereo Radio
53 3.5.6. Automatic Standard Detection
53 3.5.7. Dolby Surround Pro Logic Example
53 3.5.8. Virtual Dolby Surround Example
53 3.5.9. Noise Sequencer for Dolby Pro Logic
53 3.5.10. Software Flow for Interrupt driven STATUS Check

MSP 34x2G

55 4. Specifications

55 4.1. Outline Dimensions
56 4.2. Pin Connections and Short Descriptions
59 4.3. P in Des cripti ons
62 4.4. Pin Configurations
65 4.5. Pin Circuits
67 4.6. Electrical Characteristics
67 4.6.1. Absolute Maximum Ratings
68 4.6.2. Recommended Operating Conditions

Micronas 3

MSP 34x2G PRELIMINARY DATA SHEET

Contents, continued

Page Section Title

68 4.6.2.1. General Recommended Operating Conditions
68 4.6.2.2. Analog Input and Output Recommendations
69 4.6.2.3. Recommendations for Analog Sound IF Input Signal
70 4.6.2.4. Crystal Recommendations
71 4.6.3. Characteristics
71 4.6.3.1. General Characteristics
72 4.6.3.2. Digital Inputs, Digital Outputs
73 4.6.3.3. Reset Input and Power-Up
74 4.6.3.4. I
75 4.6.3.5. I
77 4.6.3.6. Analog Baseband Inputs and Outputs, AGNDC
79 4.6.3.7. Sound IF Inputs
79 4.6.3.8. Power Supply Rejection
80 4.6.3.9. Analog Performance
83 4.6.3.10. Sound Standard Dependent Characteristics

2

C-Bus Characteristic s

2

S-Bus Characteristics

87 5. Appendix A: Overview of TV-Sound Standards

87 5.1. NICAM 728
88 5.2. A2-Systems
89 5.3. BTSC-Sound System
89 5.4. Japanese FM Stereo System (EIA-J)
90 5.5. FM Satellite Sound
90 5.6. FM-Stereo Radio

91 6. Appendix B: Manual/Compatibility Mode

92 6.1. Demodulator Write and Read Registers for Manual/Compatibility Mode
93 6.2. DSP Write and Read Registers for Manual/Compatibility Mode
93 6.3. Manual/Compatibility Mode: Description of Demodulator Write Registers
93 6.3.1. Automatic Switching between NICAM and Analog Sound
93 6.3.1.1. Function in Automatic Sound Select Mode
94 6.3.1.2. Function in Manual Mode
95 6.3.2. A2 Threshold
95 6.3.3. Carrier-Mute Threshold
96 6.3.4. Register AD_CV
97 6.3.5. Register MODE_REG
99 6.3.6. FIR-Parameter, Registers FIR1 and FIR2
99 6.3.7. DCO-Registers
101 6.4. Manual/Compatibility Mode: Description of Demodulator Read Registers
101 6.4.1. NICAM Mode Control/Additional Data Bits Register
101 6.4.2. Additional Data Bits Register
101 6.4.3. CIB Bits Register
102 6.4.4. NICAM Error Rate Register
102 6.4.5. PLL_CAPS Readback Register
102 6.4.6 . AGC_G AIN Read bac k Regis ter
102 6.4.7. Automatic Search Function for FM-Carrier Detection in Satellite Mode
103 6.5. Manual/Compatibility Mode: Description of DSP Write Registers
103 6.5.1. Additional Channel Matrix Modes

4 Micronas

PRELIMINARY DATA SHEET

Contents, continued

Page Section Title

103 6.5.2. Volume Modes of SCART1/2 Outputs
103 6.5. 3. FM Fixed Deemp hasi s
103 6.5.4. FM Adaptive Deemphasis
104 6.5.5. NICAM Deemphasis
104 6.5.6. Identification Mode for A2 Stereo Systems
104 6.5. 7. FM DC Notch
104 6.6. Manual/Compatibility Mode: Description of DSP Read Registers
104 6.6.1. Stereo Detection Register for A2 Stereo Systems
104 6.6. 2. DC Level Register
105 6.7. Demodulator Source Channels in Manual Mode
105 6.7.1. Terrestric Sound Standards
105 6.7.2. SAT Sound Standards
105 6.8. Exclusions of Audio Baseband Features
105 6.9. Compatibility Restrictions to MSP 34x0D

MSP 34x2G

107 7. Appendix D: Application Information

107 7.1. Phase Relationship of Analog Outputs
108 7.2. Application Circuit

110 8. Appendix E: MSP 34x2G Version History

110 9. Data Sheet History

License Notice:

1)

“Dolby”, “Virtual Dolby Surround”, and the double-D Symbol are trademarks of Dolby Laboratories.

Supply of this impl ementat ion of Do lby Technology does not convey a license nor i mply a r i ght unde r any paten t, or
any other industrial or intellectual property r ight of Dolby Laboratories, to use this implementation in any finished
end-user or read y-to-use final produc t. Companies plannin g to use this implem entation in products must obtain a
license from Dolby Laboratories Licensing Corporation before designing such products.

Micronas 5

MSP 34x2G PRELIMINARY DATA SHEET

Multistandard Sound Processor Family with Dolby
Surround Pro Logic

Release Note: Revision bars indicate significant
changes to the previous edition. The hardware and
software description in this document is valid for
the MSP 34x2G version A2 and following versions.

1. Introduction

The MSP 34x2G family of single-chip Multistandard
Sound Processors covers the sou nd processing of all
analog TV-Standards worldwide, as well as the NICAM
digital sound standards. The ful l TV sou nd proc es s ing,
starting with analog sound IF signal-in, down to pro­cessed analog AF-out, is performed on a single chip.

The family’s latest member, the MSP 34x2G has all
functions of the MSP 34x0G with the addition of Dolby
Surround Pro Lo gic a nd Vi rtual Dolby Sur round s ound
processing (See License Notice on page 5). The
MSP 34x2G forms a superset of the functions of the
MSP 34x1G, which contains the vir tualizer algorithms
but does not contain any multi-channel processing.

Additional output pins DACM_C and DACM_S have
been defined which deliver the Dolby Surround Pro
Logic processed Center and Surround channels.
When DACM_C and DACM_S are active, the head­phone outputs DACA_L and DACA_R are muted and
vice versa. Simultaneous processing of Headphone
signals and Dolby Surround Pro Logic is not possible.

Surround sound can be repr oduc ed to a certain extent
with only two loud speakers. The MSP 34x2G includes
a Micronas virtualizer algorithm which has been
approved by the Dolby

1)

Laboratories for compliance
with the "Virtual Dolby Surround" technology. This
algorithm is called “3D-PANORAMA” and enables con-
vincing acoustic al sensations. Virtual Do lby Surround
can be processed together with headphone signals.

The ICs are produced in submicron CMOS technology.
The MSP 34x2G is available in the following packages:
PQFP80, PLQFP64, and PSDIP64.

1.1. Features

– All MSP 34x0G features
– All MSP 34x1G features as there are

- the 3D-PANORAMA virtualizer algorithm

- the PANORAMA virtualizer algorithm

- Noise Generator

– Dolby Surround Pro Logic processing
– Various other multich anne l sou nd mode s
– Additional pins for Center and Surround channels
– Virtualizer able to work with 2 or 3 front loudspeak-

ers

– Pin and software compatible to MSP 34x0G

Sound IF1

Sound IF2

I2S1
I2S2

SCART1
SCART2
SCART3
SCART4

MONO

ADC

SCART

DSP

Input

Select

De-

modulator

ADC

Fig. 1–1: Block diagram of the MSP 34x2G

Pre-

processing

Prescale

Prescale

Loud-

speaker

Sound

Processing

Headphone/

Surround

Sound

Processing

Source Select

DAC

DAC

DAC

DAC

SCART
Output
Select

Loud­speaker

Subwoofer

Center
Surround

Headphone
I2S

SCART1

SCART2

6 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

1.2. Features of the MSP 34x2G Family

Feature 3402 3412 3422 3442 3452

Dolby Surround Pro Logic and MSS (Micronas Surround Sound) X X X X X
3D-PANORAMA virtualizer (approved by Dolby Laboratories) with noise generator X X X X X
PANORAMA virtualizer algorithm X X X X X
Standard Selection with single I
Automatic Standard Detection of terrestrial TV standards/Automatic Carrier Mute function X X X X X
Automatic Sound Selection (mono/stereo/bilingual) X X X X X
Two selectable sound IF (SIF) inputs X X X X X
Interrupt output programmable (indicating status change) X X X X X
Loudspeaker / Headphone channel with volume, balance, bass, treble, loudness X X X X X
AVC: Automatic Volume Correction X X X X X
Subwoofer output with programmable low-pass and complementary high-pass filter X X X X X
MDB (Micronas Dynamic Bass) and 5-band graphic equalizer for loudspeaker channel X X X X X

2

C transmission X X X X X

Spatial effect for loudspeaker channel X X X X X
Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs X X X X X
Complete SCART in/out switching matrix X X X X X

2

Two I

S inputs; one I2S output XXXXX
All analog Mono sound carriers including AM-SECAM L X X X X X
All analog FM-Stereo A2 and satellite standards X X x x X
Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM X X
Adaptive deemphasis for satellite (Wegener-Panda, acc. to ASTRA specification) X X X
ASTRA Digital Radio (ADR) together with DRP 3510A X X X
All NICAM standards XX
Demodulation of the BTSC multiplex signal and the SAP channel X X X
Alignment free digital DBX noise reduction for BTSC Stereo and SAP X X
Alignment free digital Micronas Noise Reduction (MNR) for BTSC Stereo and SAP X
BTSC stereo separation (MSP 3422/42G also EIA-J) significantly better than spec. X X X
SAP and stereo detection for BTSC system XXX
Korean FM-Stereo A2 standard X X X X X
Alignment-free Japanese standard EIA-J XXX
Demodulation of the FM-Radio multiplex signal X X X

1.3. MSP 34x2G Version List

Version Status Description

MSP 3402G not confirmed FM Stereo (A2) Version
MSP 3412G available NICAM and FM Stereo (A2) Version
MSP 3422G not confirmed NTSC Version (A2 Korea, BTSC with Micronas Noise Reduction (MNR), and Japanese EIA-J system)
MSP 3442G not confirmed NTSC Version (A2 Korea, BTSC with DBX noise reduction, and Japanese EIA-J system)
MSP 3452G available Global Version (all sound standards)

Micronas 7

MSP 34x2G PRELIMINARY DATA SHEET

1.4. MSP 34x2G Versions and their Application Fields

Table 1–1 provides an overview of TV sound standards
that can be processed by the MSP 34x2G family. In
addition, the MSP 34x2G is able to handle the FM­Radio standard. With the MSP 34x2G, a complete

multimedia receiver covering all TV sound standards
together with terr estr ial/cable an d satellit e radio soun d
can be built; even ASTRA Digital Radio can be pro­cessed (with a DRP 3510A coprocessor).

Table 1–1: TV Stereo Sound Standards covered by the MSP 34x2G IC Family (details see Appendix A)

MSP Version TV-

3402

3402

3402

3412

System

B/G

L 6.5/5.85 AM-Mono/NICAM SECAM-L France
I 6.0/6.552 FM-Mono/NICAM PAL UK, Hong Kong

D/K

3452

Satellite

Position of Sound
Carrier /MHz

5.5/5.7421875 FM-Stereo (A2) PAL Germany

5.5/5.85 FM-Mono/NICAM PAL Scandinavia, Spain

6.5/6.2578125 FM-Stereo (A2, D/K1) SECAM-East Slovak. Rep.

6.5/6.7421875 FM-Stereo (A2, D/K2) PAL currently no broadcast

6.5/5.7421875 FM-Stereo (A2, D/K3) SECAM-East Poland

6.5/5.85 FM-Mono/NICAM (D/K, NICAM) PAL China, Hungary

6.5

7.02/7.2

7.38/7.56
etc.

Sound
Modulation

FM-Mono
FM-Stereo

ASTRA Digital Radio (ADR)
with DRP 3510A

Color
System

PAL Europe Sat.

Broadcast e.g. in:

ASTRA

3422, 3442

Tuner

4.5/4.724212 FM-Stereo (A2) NTSC Korea

M/N

FM-Radio 10.7 FM-Stereo Radio USA, Europe

SAW Filter

Composite
Video

4.5 FM-FM (EIA-J) NTSC Japan

4.5 BTSC-Stereo

33 34 39 MHz 4.5 9 MHz

Sound
IF
Mixer

Mono

Vision
Demo­dulator

SCART
Inputs

SCART1
SCART2
SCART3

SCART4

1

2

2

2

2

+ SAP NTSC, PAL USA, Argentina

MSP 34x2G

2

2

I2S2ADR

SCART1
SCART2

Loudspeaker

Subwoofer

Center

Surround

Headphone

SCART
Outputs

ADR
Decoder
DRP 3510A

Fig. 1–2: Typical MSP 34x2G application

8 Micronas

Micronas 9

FM/AM

Prescale

(0E

NICAM

Prescale

(10

I2C

Read

Register

I2S

I2S

A

Sound Select

Stereo or A/B

)

hex

)

hex

D

Automatic

FM/AM

Stereo or A

Stereo or B

I2S1

Prescale

(16

I2S2

Prescale

(12

(16

SCART

Prescale

(0D

Configurable Output Section

12

0

13

1

Loud­speaker
Channel

3

Matrix

(08

)

4

Source Select

5

14

)(16

)

hex

hex

6

)

)

hex

hex

2

)

hex

hex

Headphone

Channel

Matrix

(09

I2S

Channel

Matrix

(0B

Quasi-Peak

Channel

Matrix

(0C

SCART1

Channel

Matrix

(0A

hex

SCART2
Channel

Matrix

(41

hex

)

hex

)

hex

)

hex

)

)

AVC

(29

)

hex

I2S

Interface

Quasi-Peak

Detector

Volume

(07

hex

Volume

(40

hex

Bass/

Treble

or

Equalize

(02
(03

Bass/

Treble

(31/32

)

)

hex
hex

hex

)
)

Beeper

)

I2C

Read

Register

D

D

A

A

(14

hex

Loudness

(04

)

Loudness

(33

(19

hex

(1A

hex

)

hex

)

hex

)
)

SCART1_L/R

SCART2_L/R

0.5

Comple­mentary

Highpass

(2D

Lowpass

(2D

Balance

)

(01

hex

Level

Adjust

)

(2C

hex

Balance

(30

I2S_DA_OUT

SC1_OUT_L

SC1_OUT_R

Volume

)

hex

Acoustical
Compens.

(26/27/28

)

hex

MDB

)

(68...6C

(00

)

hex

hex

Volume

)

(06

hex

)

hex

)

hex

Acoustical
Compens.

(34/35/36

)

hex

D

D

A

A

DACM_L

DACM_R

DACM_SUB

DACA_C
DACA_S

DACA_L

DACA_R

Standard Selection

AGC

ANA_IN1+

ANA_IN2+

ADR-Bus

Interface

A

D

DEMODULATOR

(incl. Carrier Mute)

Decoded
Standards:

−

NICAM

−

A2

−

AM

−

BTSC

−

EIA-J

−

SAT

−

FM-Radio

I2S_DA_IN1

I2S_DA_IN2

Deemphasis:
50/75

µ

s, J17
DBX/MNR,
Panda1

Deemphasis:
J17

Standard

and Sound

Detection

Interface

Interface

SCART DSP Input Select

)

(13

SC1_IN_L

hex

2. Functional Description

PRELIMINARY DATA SHEET MSP 34x2G

SC1_IN_R
SC2_IN_L
SC2_IN_R
SC3_IN_L
SC3_IN_R

SCART Output Select

SC2_OUT_L

SC2_OUT_R
SC4_IN_L
SC4_IN_R
MONO_IN

(13

)

hex

Fig. 2–1: Signal flow block diagram of the MSP 34x2G

MSP 34x2G PRELIMINARY DATA SHEET

Configurable Output Section

Loud­speaker
Channel

Matrix

(08

hex

Headphone

Channel

Matrix

(09

hex

)

)

Virtualizer

Noise

Generator

AVC

(29

Bass/

Treble

or

Equal.

(02

)

hex

hex

(03

hex

Loudness

)
)

(04

)

hex

Beeper

)

(14

hex

0.5

Comple­mentary

Highpass

Lowpass

(2D

Balance

)

hex

)

hex

(01

Level

Adjust

(2C

Volume

)(2D

hex

(00

)

hex

)

hex

Volume

Bass/

Treble

(31/32

hex

Loudness

)

(33

)

hex

Balance

(30

)

(06

hex

)

hex

Fig. 2–2: Output section in virtual mode: Output Configuration (register 48

Configurable Output Section

Loud-

speaker

Channel

Matrix

(08

Noise

Generator

hex

)

Dolby

Pro Logic

and

optional

Virtualizer

AVC

(29

Bass/

Treble

or

Equal.

(02
(03

)

hex

)

hex

Loudness

(04

)

hex

Beeper

)

(14

hex

Equal.

Bass/

Treble

)

hex

)(33

hex

Loudness

)

hex

0.5

Comple­mentary

Highpass

Lowpass

(2D

Comple-

mentary

Highpass

Balance

)

hex

)

hex

(01

Level

Adjust

(2C

Volume

)(2D

hex

(00

)

hex

)

hex

Volume

Balance

)(31/32

(06

(30

hex

)

hex

MDB

(68...6C

hex

MDB

(68...6C

)

hex

) = 0100

)

hex

hex

Acoustical
Compens.

(26/27/28

Acoustical
Compens.

(34/35/36

Acoustical
Compens.

(26/27/28

Acoustical
Compens.

(34/35/36

DACM_L

D

DACM_R

)

hex

A

DACM_SUB

DACA_C
DACA_S

DACA_L

D

)

hex

A

DACA_R

DACM_L

D

DACM_R

)

hex

A

DACM_SUB

DACA_L
DACA_R

DACA_C

D

)

hex

A

DACA_S

Fig. 2–3: Output section with multi-channel surround: Output Configuration (register 48

) = 8200

hex

hex

10 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

2.1. Architecture of the MSP 34x2G Family

The block diagrams in Fig. 2–1, Fig. 2–2, and Fig. 2–3
show the signal flow in the MSP 34x2G in three modes
that can be set in the Output Configuration register.

– Standard mode (see Fig. 2–1).

The IC is compatible to the MSP 34x0G family.

– Virtual mode (see Fig. 2–2).

The IC is compatible to the Virtual Dolby
MSP 34x1G family.

– Multi-channel mode (see Fig. 2–3).
The three block diagrams show the features of the

MSP 3452G family member.
Other members of the MSP 34x2G family do not have

the complete set of features: The demodulator handles
only a subset of the standards presented in the
demodulator block; NICAM processin g is onl y p os sible
in the MSP 3412G and MSP 3452G.

2.2. Sound IF Processing

2.2.1. Analog Sound IF Input

The input pins ANA_IN1+, ANA_IN2+, and ANA_IN
offer the possibility to connect two different sound IF
(SIF) sources to the MSP 34x2G. The analog-to-digital
conversion of the preselected sound IF sign al is done
by an A/D-converter. An analog automatic gain ci rcuit
(AGC) allows a wide range of input levels. The high­pass filters formed by the coupling capacitors at pins
ANA_IN1+ and ANA_I N2+ see Section 7.2. “Applica-
tion Circuit” on page 108 are sufficient in most cases to
suppress video components. Some combinations of
SAW filters and sound IF mixer ICs, however, show
large picture components on their outputs. In this case,
further filtering is recommended.

2.2.2. Demodulator: Standards and Features

BTSC-Stereo: Detection and FM demo dulation of the

aural carrier resul ting in the MTS/MPX signal. De tec­tion and evaluation of the pilot carrier, AM demodula ­tion of the (L
carrier. Processing of DBX noise reduction or
Micronas Noise Reduction (MNR).

BTSC-Mono + SAP: Detection and FM demodulation
of the aural carrier resulting in the MTS/MPX signal.
Detection and evaluation of the pilot car rier, detection
and FM demodulation of the SAP s ubcarrie r. Process­ing of DBX n oise reducti on or Micr onas Noise Reduc­tion (MNR).

Japan Stereo: Detection and FM demodulation of the
aural carrier resulting in the MPX signal. Demodulation
and evaluation of the identification signal and FM
demodulation of the (L

FM-Satellite Sound: Demodulation of one or two FM
carriers. Processi ng of high-deviation mono or na rrow
bandwidth mono, stereo, or bilingual satellite sound
according to the ASTRA specification.

FM-Stereo-Radio: Detection and FM d emodulati on of
the aural carrier resu lting in the MPX si gnal. Detecti on
and evaluation of the pilot carrier and AM demodula-

−

tion of the (L
The demodulator blocks of all MSP 34x2G versions

have identical user interfaces. Even completely differ­ent systems like the BTSC and NICAM systems are
controlled the same way. Standards are selected by
means of MSP Standard Cod es. Automatic processes
handle standard detection and identification without
controller interaction. The key features of the
MSP 34x2G demodulator blocks are:

Standard Selection: The controlling of the demodula­tor is minimized: All parameters, such as tuning fre­quencies or filter bandwidth, are adjusted automati­cally by transmitting one single value to the
STANDARD SELECT reg ister. For all standards, spe­cific MSP standard codes are defined.

−R)-carrier and dete ction o f the SAP sub -

−R)-carrier.

−R)-carrier.

The MSP 34x2G is able to demodulate all TV-sound
standards worldwid e including the digital NICAM sys­tem. Depending on the MSP 34x2G version, the fol­lowing demodulation modes can be performed:

A2 Systems: Detection and demodulation of two sep­arate FM carriers ( FM1 and FM2), demodulation and
evaluation of the identification signal of carrier FM2.

NICAM Systems: Demodulati on and decoding of t he
NICAM carrier, detection and demodulation of the ana­log (FM or AM) carrier. For D/K-NICAM, the FM carrier
may have a maximum deviation of 384 kHz.

Very high deviation FM-Mono: Detection and robust
demodulation of on e FM carr ier with a maximum devi­ation of 540 kHz.

Micronas 11

Automatic Standar d Detecti on: If the TV sound stan­dard is unknown, the MSP 34x2G can automatically
detect the actual standard, switch to that standard, and
respond the actual MSP standard code.

Automatic Carrier Mute: To prevent noise effects or
FM identification problems in the absence of an FM
carrier, the MSP 34x2G offers a configurable carrier
mute feature, which is activated automatically if th e T V
sound standard is selected by means of the STAN­DARD SELECT register. If no FM carrier is detected at
one of the two MSP demodulator channels, the corre­sponding demodulator output is muted. This is indi­cated in the STATUS register.

MSP 34x2G PRELIMINARY DATA SHEET

2.2.3. Preprocessing of Demodulator Signals

The NICAM signals must be processed by a deempha­sis filter and adjusted in level. The analog demodu­lated signals must b e processed by a deemphas is fil­ter, adjusted in level, and dematrixed. The correct
deemphasis filters are already selected by setting th e
standard in the STANDARD SELECT register. The
level adjustment has to be done by means of the FM/
AM and NICAM prescale registers. The necessary
dematrix function depends on the selected sound
standard and the actual broadcasted sound mode
(mono, stereo, or bilingual). It can be manually set by
the FM Matrix Mode register or automatically set by
the Automatic Sound Selection.

2.2.4. Automatic Sound Select

In the Automatic Sound Select mode, the dematrix
function i s aut om a t ica l ly s el ec t ed ba se d on th e id ent if i ­cation information in the ST ATUS register. No I

2

C inter­action is necessary when the broadcasted sound
mode changes (e.g. from mono to stereo).

The demodulator sup ports the identification ch eck by
switching between mono comp atible standards (stan­dards that have the same FM mono c arrier) aut omati­cally and non-audible. If B/G-FM or B/G-NICAM is
selected, the MSP will switch between these stan­dards. The same action is performed for the standards:
D/K1-FM, D/K2-FM, D/K3-FM and D/K-NICAM.
Switching is only d one in th e abse nce of a ny ste reo or
bilingual identification. If identification is found, the
MSP keeps the detected standard.

In case of high bit-error rates, the MSP 34x2G auto­matically falls back from digital NI CAM sound to ana­log FM or AM mono.

– “Stereo or A” channel: Analog or digital mono

sound, stereo if available. In case of bilingual broad­cast, it contains language A (on left and right).

– “Stereo or B” channel: Analog or digital mono

sound, stereo if available. In case of bilingual broad­cast, it contains language B (on left and right).

Fig. 2–4 and Table 2–2 show the source channel
assignment of the demodulated signals in case of
Automatic Sound Select mode for all sound standards.

Note: The analog primar y input channel contains the
signal of the mono FM/AM c arrie r or the L+R sig nal of
the MPX carrier. The secondary input channel con­tains the signal of the seco nd FM carr ier, the L

−R sig-

nal of the MPX carrier, or the SAP signal.

Source Select

LS Ch.
Matrix

Output-Ch.
Matrices must
be set once to
stereo

SC2 Ch.
Matrix

primary
channel

secondary
channel

NICAM A

NICAM

FM/AM

Prescale

NICAM

Prescale

Automatic

Sound
Select

FM/AM

Stereo or A/B

Stereo or A

Stereo or B

0

1

3

4

Fig. 2–4: Source channel assignment of demodulated
signals in Automatic Sound Select Mode

2.2.5. Manual Mode

Fig. 2–5 shows the source channel assignment of
demodulated signals in ca se of manual mode. If man­ual mode is required, more information can be found in
Section 6.7. “Demodulator Source Channels in Manual
Mode” on page 105.

Table 2–1 summarizes all actions that take place when
Automatic Sound Select is switched on.

To provide more fl exibility, the Automatic Sound Select
block prepares four different source channels of
demodulated sound (see Fig. 2–4). By choosing one of
the four demodulator channels, the preferred sound
mode can be selected for each of the output channels
(loudspeaker, headphone, etc.). This is done by means
of the Source Select registers.

The following source chan nels of demodulated sound
are defined:

primary
channel

secondary
channel

NICAM A

NICAM

FM/AM

Prescale

NICAM

Prescale

FM-Matrix

FM/AM

NICAM

(Stereo or A/B)

0

1

Fig. 2–5: Source channel assignment of demodulated
signals in Manual Mode

Source Select

LS Ch.
Matrix

Output-Ch.
Matrices
must be set
according
the standard

SC2 Ch.
Matrix

– “FM/AM” channel: Analog mono sound, stereo if

available. In case of NICAM, analog mono only
(FM or AM mono).

– “Stereo or A/B” channel: Analog or digital mono

sound, stereo if available. In case of bilingual broad­cast, it contains both languages A (left) and B
(right).

12 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

Table 2–1: Performed actions of the Automatic Sound Selection

Selected TV Sound Standard Performed Actions

B/G-FM, D/K-FM, M-Korea,
and M-Japan

B/G-NICAM, L-NICAM, I-NICAM,
and D/K-NICAM

Evaluation of the identification signal and automatic switching to mono, stereo, or bilingual. Preparing four
demodulator source channels according to Table 2–2.

Evaluation of NICAM-C-bits and automatic switching to mono, stereo, or bilingual. Preparing four
demodulator source channels according to Table 2–2.

In case of bad or no NICAM reception, the MSP switches automatically to FM/AM mono and switches
back to NICAM if possible. A hys teresis prevents periodical switching.

B/G-FM, B/G-NICAM
or
D/K1-FM, D/K2-FM, D/K3-FM,

and D/K-NICAM

Automatic searching for stereo/bilingual-identification in case of mono transmission. Automatic and non­audible changes between Dual-FM and FM-NICAM standards while listening to the basic FM-Mono sound
carrier.
Example: If starting with B/G-FM-Stereo, there will be a periodical alternation to B/G-NICAM in the
absence of FM-Stereo/Bilingual or NICAM-identification. Once an identification is detected, the MSP
keeps the corresponding standard.

BTSC-STEREO, FM Radio Evaluation of the pilot signal and automatic switching to mono or stereo. Preparing four demodulator

source channels according to Table 2–2. Detection of the SAP carrier.

BTSC-SAP In the absence of SAP, the MSP switches to BTSC-Stereo if available. If SAP is detected, the MSP

switches automatically to SAP (see Table 2–2).

Table 2–2: Sound modes for the demodulator source channels with Automatic Sound Select

Source Channels in Automatic Sound Select Mode

Broadcasted
Sound
Standard

Selected
MSP Standard

3)

Code

Broadcasted
Sound Mode

FM/AM

(source select: 0)

Stereo or A/B

(source select: 1)

Stereo or A

(source select: 3)

Stereo or B

(source select: 4)

M-Korea
B/G-FM
D/K-FM
M-Japan

B/G-NICAM
L-NICAM
I-NICAM
D/K-NICAM
D/K-NICAM

(with high
deviation FM)

02

1)

03, 08
04, 05, 07, 0B
30

2)

08, 03
09
0A

2)

, 05

2)

0B, 04
0C, OD

MONO Mono Mono Mono Mono

1)

STEREO Stereo Stereo Stereo Stereo
BILINGUAL:

Languages A and B
NICAM not available or

Left = A
Right = B

Left = A
Right = B

AB

analog Mono analog Mono analog Mo no analog Mono

error rate too high
MONO analog Mono NICAM Mono NICAM Mono NICAM Mono
STEREO analog Mono NICAM Stereo NICAM Stereo NICAM Stereo
BILINGUAL:

Languages A and B

analog Mono Left = NICAM A

Right = NICAM B

NICAM A NICAM B

BTSC 20, 21 MONO Mono Mono Mono Mono

STEREO Stereo Stereo Stereo Stereo

20 MONO+SAP Mono Mono Mono Mono

STEREO+SAP Stereo Stereo Stereo Stereo

21 MONO+SAP Left = Mono

Right = SAP

STEREO+SAP Left = Mono

Right = SAP

Left = Mono
Right = SAP

Left = Mono
Right = SAP

Mono SAP

Mono SAP

FM Radio 40 MONO Mono Mono Mono Mono

STEREO Stereo Stereo Stereo Stereo

1)

The Automatic Sound Select process will automatically switch to the mono compatible analog standard.

2)

The Automatic Sound Select process will automatically switch to the mono compatible digital standard.

3)

The MSP Standard Codes are defined in Table 3–7 on page 28.

Micronas 13

MSP 34x2G PRELIMINARY DATA SHEET

2.3. Preprocessing for SCART and

2

S Input Signals

I

2

The SCART and I
level by means of the SCART and I

S inputs need only be a djusted in

2

S prescale re gis-

ters.

2.4. Source Selection and Output Channel Matrix

The Source Selec tor makes it possible to di stribute all
source signals (o ne of the demodulator source ch an­nels, SCART, or I

2

S input) to the desir ed output ch an­nels (loudspeaker, headphone, etc.). Al l inpu t and o ut­put signals can be processed simultaneously. Each
source channel is identified by a unique source
address.

For each output channel, the soun d mode can be set
to sound A, sound B, stereo, or mono by means of the
output channel matrix.

If Automatic Sound Select is on, the output channel
matrix can stay fixed to stereo (transparent) for demod­ulated signals.

output level
[dBr]

−18

−24

input level

−30 −24 −18 −12 −6

0

[dBr]

Fig. 2–6: Simplified AVC characteristics

2.5.2. Loudspeaker and Headphone Outputs

The following baseband features are implemented in
the loudspeaker and headphone output channels:
bass/treble, loudness, balan ce, and volume. A square
wave beeper can be added to the loudspeaker and
headphone channel. The loudspeaker channel addi­tionally performs: equalizer (not simultaneously with
bass/treble), spatial effects, and a subwoofer cross­over filter.

2.5. Audio Baseband Processing

2.5.1. Automatic Volume Correction (AVC)

Different sound sources (e.g. terrestr ial chann els, SAT
channels, or SCART) fairly often do not have the same
volume level. Advertisements during movies usually
have a higher volume level than the movie itself. This
results in annoying volume ch anges. The AVC solves
this problem by equalizing the volume level.

To prevent clipping, the AVC’s gain decreases quickly
in dynamic boost conditions. To suppress oscillation
effects, the gain increases rather slowly for low-level
inputs. The decay time is programmable by means of
the AVC register (see page page 38).

For input signals ranging from
AVC maintains a fixed output level of

−24 dBr to 0 dBr, the

−18 dBr. Fig. 2–6

shows the AVC output level versus its input level. For
prescale and volume r egisters set to 0 dB, a level o f
0 dBr corresponds to full scale input/output. This is

– SCART input/output 0 dBr = 2.0 V
– Loudspeaker and Aux output 0 dBr = 1.4 V

rms

rms

2.5.3. Subwoofer Output

The subwoofer signal is cre ated by combining the le ft
and right ch annels directly behind the loudness block
using the formula (L+R)/2. Due to the division by 2, the
D/A converter will not be overloaded, even with full
scale input signals. The sub woofer signal is filtered by
a third-order low-pass with programmable corner fre­quency followed by a level adjustment. At the loud­speaker channels, a complementary high-pass filter
can be switched on. Subwoofer and loudspeaker out­put use the same volume (Loudspeaker Volume Regis­ter).

2.5.4. Quasi-Peak Detector

The quasi-peak r eadout register can be used to read
out the quasi-peak level of any input source. The fea­ture is based on following filter time constants:

attack time: 1.3 ms
decay time: 37 ms

14 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

2.5.5. Micronas Dynamic Bass (MDB)

The Micronas Dynamic Bass system (MDB) extends
the frequency range of loudspeakers or headphones.

After the adaption of MDB to the loudspeakers and the
cabinet, fur ther customizing of MDB a llows individual
fine tuning of the sound.

The MDB is placed in the subwoofer path. For applica­tions without a subwoofer, the enhanced bass signal
can be added back onto the Left/Right chan nels (see
Fig. 2–1 on page 9). Micronas Dynamic Bass com­bines two effects: dynamic amplification and adding
harmonics.

2.5.5.1. Dynamic Amplification

Low frequency signals can be boosted while the output
signal amplitude is measu red. If the amplitude comes
close to a definable limit, the gain is reduced automati­cally in dynamic Volume mode. Therefore, the system
adapts to the signal amplitu de which is really present
at the output of the MSP device. Clipping effects are
avoided.

2.5.5.2. Adding Harmonics

MDB exploits the psychoa coustic phenomenon of the
‘missing fundamental’. Adding harmonics of the fre­quency componen ts below the cutoff frequency gives
the impression of actually hearing the low frequency
fundamental. In other words: The listener has the
impression that a lo uds pe aker system seems to repro­duce frequencies although physically not possible.

Amplitude (db)

MDB_HP

Frequency

Fig. 2–8: Adding harmonics

2.5.5.3. MDB Parameters

(db)

Amplitude

MDB_LIMIT

MDB_HP MDB_LP

SUBW_FREQ

Fig. 2–7: Dynamic amplification

Several parameters allow tuning the characteri stics of
MDB according to the TV loudspeaker, the cabinet,
and personal preferences (see Table 3–11 on
page 34). For more detailed information on how to set
up MDB, please refer to the corr esponding applicati on
note on the Micronas homepage.

Signal Level

Frequency

Micronas 15

MSP 34x2G PRELIMINARY DATA SHEET

2.6. Surround Processing

2.6.1. Output Configuration

Like the MSP 34x1G ICs, the MSP 34x2G can be used
for virtual surround sound on the left and right loud­speaker outputs. For multichannel outpu ts (more than
2 channels), extra output pins have been defined
(DACM_C and D ACM_S pins). For processing of these
output channels, internal resources are shared with
the headphone processing. As a result, headphone
output is not pos sible together with multi- channel sur­round processing. When headphone output pins are
active, the surround outputs are muted and vice versa.
There are two options: the HP/CS switch and the
channel configuration . T he o utpu t configuration is con­trolled by means of registe r 48
12

.

hex

on I2C subaddress

hex

2.6.1.1. HP/CS Switch

This switch defines which output p in pair is driven by
the D/A converters that are used for headphone or sur­round processing. The unselected pins are muted.
This makes it convenient to connect the center/sur­round amplifiers or outputs to the MSP 34x2 without
external switches.

Mute the Headphone/Surround channel by setting reg­ister 06

to 0000

hex

before switching. Allow at least

hex

2 s for settling to avoid audible plops.

2.6.1.2. Channel Configuration

The channel configuration defines whether surround
processing is switched on and what resources of the
IC are to be used for surround sound processing.
There are 3 options:

– STEREO:

The IC is in the normal stereo processing mode. No
surround processing takes place. In this mode, the
IC is compatible to the MSP 34x0G.

– TWO_CHANNEL:

Surround sound processing is switched on, but only
left and right loudspeaker channels are used for out­put. This mode is used for virtual surround sound.

– MULTI_CHANNEL:

Surround sound processing is switched on, left and
right loudspeaker channels together with left and
right headphone channels are used for output. The
following relationship applies: Center corresponds
to the left headphone channel; Surround corre­sponds to the right headphone channel.

2.6.2. Surround Processing Mode

Surround sound processing is controlled by three func­tions:

The "Decoder Matrix" defines which method should be
used to create a mu ltich ann el si gna l ( L, C, R, S) out of
a stereo input.

The "Surround Reprodu ction" deter mines whether the
surround signal “S” i s fed to surround speakers. If no
surround speaker is actuall y connected, it defines the
method that should be used to create surround effects.

The “Center Mode ” determines how the center signal
“C” is to be proce ssed. It can be left un modified, dis­tributed to left and right, discarded or high pass fil­tered, whereby the low pass signals are distr ibuted to
left and right.

The surround proces s ing mode is controlled by means
of register 4B

on I2C subaddress 12

hex

hex

.

2.6.2.1. Decoder Matrix

The Decoder Matrix allows three settings:

– ADAPTIVE:

The adaptive matrix is used for Dolby Surround Pro
Logic. Even sound material not encoded in Dolby
Surround will produce good surround effects in this
mode. The use of the adaptive matrix requires a
license from Dolby Laboratories (See License
Notice on page 5).

– PASSIVE:

A simple fixed matrix is used for surround sound.

– EFFECT:

A fixed matrix that is used for mono sound and spe­cial effects. In adaptive or passive mode no sur­round signal is present in case of mono, moreover in
adaptive mode even the left and right output chan­nels carry no signal (or just low frequency signals in
case of Center Mode = NORMAL). If surround
sound is still required for mono signals, the effect
mode can be used. This forces the surround chan­nel to be active. The effect mode can be used
together with 3D-PANORAMA. The result will be a
pseudo stereo effect or a broadened stereo image
respectively.

16 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

2.6.2.2. Surround Reproduction

Surround sound can be reproduced with four choices:

– REAR_SPEAKER:

If there are any surround speakers connected to the
system, this mode should be used. Useful loud­speaker combinations are: (L, C, R, S) or (L, R, S).

– FRONT_SPEAKER:

If there is no surround speaker connected, this
mode can be used. Surround information is mixed to
left and right output but without creating the illusion
of a virtual speaker. It is similar to stereo but an
additional center speaker can be used. This mode
should be used with the adaptive decoder matrix
only . Useful loudspeaker combinations are: (L, C, R)
(Note: the surround output channel is muted).

– PANORAMA:

The surround information is mixed to left and right in
order to create the illusion of a virtual surround
speaker. Useful loudspeaker combinations are: (L,
C, R) or (L, R) (Note: the surround output channel is
muted).

– 3D-PANORAMA:

Like PANORAMA with improved effect. This algo­rithm has been approved by the Dolby Laboratories
for compliance with the "Virtual Dolby Surround"
technology. Useful loudspeaker combinations are:
(L, C, R) or (L, R) (Note: the surround output chan­nel is muted).

2.6.2.4. Useful Combinations of Surround Processing Modes

In principle, "Decoder Matrix", "Surround Reproduc­tion", and "Center Modes" are independent settings (all
"Decoder Matrix" settings can be used with all "Sur­round Reproduction" and "Center Modes") but there
are some combinations that do not create "good"
sound. Useful combina tio ns ar e

Surround Reproduction and Center Modes

– REAR_SPEAKER:

This mode is used if surround speakers are avail­able. Useful center modes are NORMAL, WIDE,
PHANTOM, and OFF.

– FRONT_SPEAKER:

This mode can be used if no surround speaker but a
center speaker is connected. Useful center modes
are NORMAL and WIDE.

– PANORAMA or 3D-PANORAMA:

No surround speaker used. Two (L and R) or three
(L, R, and C) loudspeakers can be used. Useful
center modes are NORMAL, WIDE, PHANTOM,
and OFF.

Center Modes and Decoder Matrix

– PHANTOM:

Should only be used together with ADAPTIVE
Decoder Matrix.

2.6.2.3. Center Modes

Four center modes are supported:
– NORMAL:

small center speaker connected, L and R speakers
have better bass capability.

– WIDE:

L,R, and C speakers all have good bass capability.

– PHANTOM:

No center speaker used. Center signal is distributed
to L and R (Note: the center output channel C is
muted).

– OFF:

No center speaker used. Center signal C is dis­carded (Note: the center output channel C is
muted).

– NORMAL and WIDE:

Can be used together with any Surround Decoder
Matrix.

– OFF:

In special cases, this mode can be used together
with the PASSIVE and EFFECT Decoder Matrix (no
center speaker connected).

Micronas 17

MSP 34x2G PRELIMINARY DATA SHEET

2.6.3. Examples

Table 2–3 sh ows some examples of how these modes
can be used to configure the IC. The list is not
intended to be complete, more modes are possible.

Table 2–3: Examples of Surround Configurations

Configurations

Speaker
Config­uration

Output Configuration

Register (48

1)

HP/CS
Switch
[15]

Stereo IC is compatible to the MSP34x0G.

Stereo

(L,R) HP STEREO −− −

Surround Modes as defined by Dolby Laboratories

Dolby Surround Pro Logic

Dolby 3 Stereo

Virtual Dolby Surround

(L,C,R,S) CS MUL TI_CHANNEL ADAPTIVE REAR_

(L,R,S) CS MULTI_CHANNEL ADAPTIVE REAR_

(L,C,R) CS MULTI_CHANNEL ADAPTIVE FRONT_

(L,R) HP TWO_CHANNEL ADAPTIVE 3D_PANORAMA PHANTOM

Surround Modes that use the Dolby Pr o Logic Matrix

3-Channel Virtual Surround

(L,C,R) CS MULTI_CHANNEL ADAPTIVE 3D_PANORAMA NORMAL

Passive Matrix Surround Sound

Surround Processing Mode

)

hex

Channel
Configuration
[14:8]

2)

2)

Register (4B

Decoder
Matrix
[15:8]

)

hex

Surround
Reproduction
[7:4]

SPEAKER

SPEAKER

SPEAKER

Center
Mode
[3:0]

NORMAL
WIDE

PHANTOM

NORMAL
WIDE

WIDE

Micronas Surround Sou nd Multi-chan nel
(4-channel configuration)

Micronas Surround Sou nd Multi-chan nel
(3-channel configuration)

Micronas Surround Sound Virtual

(L,C,R,S) CS MULTI_CHANNEL PASSIVE REAR_

SPEAKER

(L,R,S) CS MULTI_CHANNEL PASSIVE REAR_

SPEAKER

(L,R) HP TWO_CHANNEL PASSIVE 3D_PANORAMA OFF

NORMAL
WIDE

OFF

(2-channel configuration)
Micronas Surround Sound Virtual

(3-channel configuration)

(L,C,R) CS MULTI_CHANNEL PASS IVE 3D_PANORAMA NORMAL

WIDE

Special Effects Surround Sound

Micronas Surround Sound for mono
(4-channel configuration)

Micronas Surround Sound Virtual

(L,C,R,S) CS MULTI_CHANNEL EFFECT REAR_

SPEAKER

(L,R) HP TWO_CHANNEL EFFECT 3D_PANORAMA OFF

NORMAL
WIDE

for mono
(2-channel configuration)

Micronas Surround Sound Virtual
for mono

(L,C,R) CS MULTI_CHANNEL EFFECT 3D_PANORAMA NORMAL

WIDE

(3-channel configuration)

1)

Speakers not in use are muted automatically.

2)

The implementation in products requires a license from Dolby Laboratories Licensing Corporation (see note on page 5).

18 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

2.6.4. Application Tips for using 3D-PANORAMA

2.6.4.1. Sweet Spot

Good results are on ly obtained in a rather close area
along the middle axis between the two loudspeakers:
the sweet spot. Moving away from this position
degrades the effect.

2.6.4.2. Clipping

For the test at Dolby Labs, it is very impor tant to h ave
no clipping effects even with worst case signals. That
is, 2 Vrms input sig nal must not clip. The SCART input
prescale register has to be set to values of max 19
(25

). This is sufficient in terms of clipping.

dec

hex

However, it was found, that by reducing the prescale to
a value lower than 25

more convincing effects are

dec

generated in case of very high dynamic signals. A
value of 18

is a good compromise between overall

dec

volume and additional headroom.
Test signals : sine sweep with 2 V

; L only, R only,

RMS

L&R equal phase, L&R anti phase.
Listening tests: Dolby Trailers (train trailer, city trailer,

canyon trailer...)

Great care has to be taken with sys tems that us e one
common subwoofer: A single loudspeaker cannot
reproduce vir tual sound locations. The cros sove r fre­quency must be lower than 120 Hz.

2.6.4.4. Cabinet Requirements

During listeni ng tests at Dolby Laboratories, no reso­nances in the cabinet should occur.

Good material to check for resonances are the Dolby
Trailers or other dynamic sound tracks.

2.6.5. Input and Output Levels in Dolby Surround

Pro Logic Mode

The analog inputs are able to accept 2 Vrms input level
without overloading any stage before the volume con­trol. The nominal input level (input sensitivity) is
350 m V. This gives 15 dB headroom. The scar t pres­cale value should be set to max 0 dB (max 25

2

I

S-Inputs should have the same headroom (15 dB)

dec

).

when entering the MSP 3452G. The h ighest possible
input level of 0 dBF S is ac ce pted without interna l over­flow. The I
(16

dec

2

S-prescale value should be set to 0 dB

).

2.6.4.3. Loudspeaker Requirements

The loudspeakers used and their positioning inside the
TV set will greatly influence the performance of the vir­tualizer. The algorithm works with the direct sound
path. Reflected sound waves reduce the effect. So it’s
most important to have as much direct sound as possi­ble, compared to indirect sound.

To obtain the approval for a TV set, Dolby Laboratories
require mounting the loudspeakers at the front of t he
set. Loudspeakers radiat ing to the side of the TV set
will not produce co nvincing effects. Good d irect ional ity
of the loudspeakers towards the listener is optimal.

The virt ualizer was specially developed for implemen­tation in TV sets. Even for rather small stereo TV's, suf­ficient sound effects can be obtained. For small set s,
the loudspeaker placement should be to the side of the
CRT; for large screen sets (or 16:9 sets), mounting the
loudspeakers below the CRT is a ccep table (larg e sep­aration is preferred, low frequency sp eakers shoul d be
outmost to avoid cancellation effects). Using externa l
loudspeakers with a la rge stereo base will not create
optimal effects.

The loudspeakers should be able to reproduce a wi de
frequency range. The most impor tant fr equency range
starts from 160 Hz and ranges up to 5 kHz.

With higher prescale values lower input sensitivities
can be accommodated. A higher input sensitivity is not
possible, because at least 15 dB headroom is required
for every input according to the Dolby specifications.

A full-scale left only input (2 Vrms) will produc e a full­scale left only output (at 0 dB volume). The typical out­put level is 1.37 Vrms for DACM_L. The same holds
true for right only signa ls (1.37 Vrms for DACM_R). A
full-scale in put level on both inputs ( Lin=Rin=2 Vrms)
will give a center only output with maximum level. The
typical output level is 1.37 Vrms for DACM_C. A full­scale input level on both input s (but Lin and Rin with
inverted phases) wil l give a surround-only s ignal with
maximum level (1.37 Vrms for DACM_S).

For reproducing Dolby Pro Logic accordi ng to it s sp ec ­ifications, the center and surround outputs must be
amplified by 3 dB with respect to the L and R output
signals. This can be done in two ways:

1. By implementing 3 dB more amplification for center

and surround loudspeaker outputs.

2. By always selecting volume for L and R 3 dB lower

than center and surround. Method 1 is preferable, as
method 2 lowers the achievable SNR for left and right
signals by 3 dB.

Micronas 19

MSP 34x2G PRELIMINARY DATA SHEET

2.6.6. Subwoofer in Surround Mode

If the channel configuration is set to OFF or
TWO_CHANNEL, the subwoofer signal is created by
combining the left and right channels directly behind
the loudness block using the formula (L+R)/2.

Note: This is identical to the MSP 34x0G.
If the channel configuration is MULTI_CHANNEL, the

subwoofer signal is created by combini ng the left and
right channels of the loudspeaker channel and the
center signal (= headphone left) directly behind the
loudness block using the formula (L+R+C)/2. Due to
the fact, that the subwoofer is formed behind al l bass/
treble/loudness filters, it is strongly recommended to
have exactly the same setting for these filters in both,
the loudspeaker and center/surround channels when
using the subwoofer output. Any mismatch in these
settings will result i n an unbala nced mix of L , C and R
for the subwoofer signal.

2.6.7. Equalizer in Surround Mode

In the MULTI_CHANNEL Surround mode, the equal­izer can be used with on e common set ting for the left,
right, and center channels, but the equalizer cannot be
used for the surround channel (see Fig. 2–3 on
page 10).

mitting the ACB register first, the reset state can be
redefined.

2

S Bus Interface

2.8. I

The MSP 34x2G has a synchronous master/slave
input/output interface running on 32 kHz.

The interface accepts two formats:

2

S_WS changes at the word boundary

1. I

2

2. I

S_WS changes one I2S-clock period before the

word boundaries.

2

S options are set by means of the MODUS and

All I
the I2S_CONFIG registers.

2

The I

S bus interface consists of five pins:

– I 2S _ D A _ I N 1 , I 2 S _ DA _ I N 2 :

2

S serial data input: 16, 18....32 bits per sample

I

– I2S_DA_OUT:

2

I

S serial data output: 16, 18...32 bits per sample

– I2S_CL:

2

I

S serial clock

– I2S_WS:

2

I

S word strobe signal defines the left and right

sample

2.7. SCART Signal Routing

2.7.1. SCART DSP In and SCART Out Select

The SCART DSP Input Select and SCART Output
Select blocks include full matr ix switching facilities. To
design a TV set with four pairs of SCART-inputs and
two pairs of SCART-outputs, no external switching
hardware is required. The switches are controlled by
the ACB user register (see Table 3–11 on page 47).

2.7.2. Stand-by Mode

If the MSP 34x2G is switched off by first pulling
STANDBYQ low and th en ( aft er >1

µs delay) switching

off DVSUP and AVSUP, but keeping AHVSUP
(‘Stand-by’-mode), the SCART switches maintain
their position and function. This allows the copying
from SCART-input to SCART-output in the TV set’s
stand-by mode.

In case of power on or s tart ing from stand-by (switch­ing on the DVSUP and AVSUP, RESETQ going high
2 ms later), all internal registers except the ACB regis­ter (see page 47) are rese t to the d efault configuration
(see Table 3–5 on page 25). The reset p osition of the
ACB register becomes act ive after the first I

2

C trans-

mission into the Baseban d Processing par t. By trans-

If the MSP 34x2G serves as the master on the I

2

interface, the clock and word strobe lines are driven by
the IC. In this mode, only 16 or 32 bits per sample can
be selected. In slave mode, these lines are input to the
IC and the MSP clock is synchronized to 576 times the
I2S_WS rate (32 kH z). NICAM operation is no t possi­ble in slave mode.

2

S timing diagram is shown in Fig. 4–22 on

An I
page 76.

S

20 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

2.9. ADR Bus Interface

For the ASTRA Digital Radio System (ADR), the
MSP 3402G, MSP 3412G, and MSP 3452G perform s
preprocessing such as carrier selection and filtering.
Via the 3-line ADR-bus, the resulting signals are trans­ferred to the DRP 3510A coprocessor, where the
source decoding is per formed. To be prepared for an
upgrade to ADR with an additional DRP board, the fol­lowing lines of MSP 34x2G should be provided on a
feature connector:

– AUD_CL_OUT
– I2S_DA_IN1 or I2S_DA_IN2
– I2S_DA_OUT
– I2S_WS
– I2S_CL
– ADR_CL, ADR_WS, ADR_DA

For more details, please refer to the DRP 3510A data
sheet.

2.10. Digital Control I/O Pins and Status Change Indication

2.11. Clock PLL Oscillator and Crystal Specifications

The MSP 34x2G derives all internal system clocks
from the 18.432 MHz oscillator. In NICAM or in I

2

S­Slave mode, the clock is phase-locked to the corre­sponding source. Therefore, it is not possible to use
NICAM and I

2

S-Slave mode at the same time.

For proper performance, the on-chip clock oscillator
requires a 18.432 MHz crystal. Note that for the
phase-locked modes (NICAM, I

2

S-Slave), crystals with

tighter tolerance ar e required.

The static level of the digital input/output pins
D_CTR_I/O_0/1 is switchable between HIGH and
LOW via the I
(see page 47). This enables the c ontroll ing of exter nal
hardware switch es or other devices via I

2

C-bus by means of the ACB register

2

C-bus.

The digital input/outpu t pins can be set to high imp ed­ance by means of the MODUS register (see page 31).
In this mode, the pi ns can be used as input. The cur­rent state can be read o ut o f the STATUS register (see
page 33).

Optionally, the pin D_CTR_I/O_1 can be used as an
interrupt requ est si gnal to t he contro ller, indicating any
changes in the read register STATUS. This makes poll­ing unnecessary, I

2

C bus interactions are reduced t o a
minimum (see STATUS register on page 33 and
MODUS register on page 31).

Micronas 21

MSP 34x2G PRELIMINARY DATA SHEET

3. Control Interface

3.1. Device and Subaddresses

2

The MSP 34x2G is controlled via the I

C bus slave

interface.
The IC is selected by transmitting one of the

MSP 34x2G device addresses. In order to allow up to
three MSP ICs to be connected to a single bus, an
address select pin (ADR_SEL) has been implemented.
With ADR_SEL pulled to high, low, or left open, the
MSP 34x2G responds to different device addresses. A
device address pair is defined as a write address and a
read address (see Table 3–1).

Writing is done by sending the write device address,
followed by the subaddress byte, two address bytes,
and two data bytes.

Reading is done by sending the writ e device address,
followed by the subaddress byte and two address
bytes. Without sending a stop condi tio n, r ead in g of th e
addressed data is completed by sending the device
read address and reading two bytes of data.

2

Refer to Section 3.1.3 . for the I
Section 3.4. “Programming Tips” on page 52 for pro­posals of MSP 34x2G I

2

C telegrams. See Table 3–2

C bus protocol and to

for a list of available subaddresses.

response time is about 0.3 ms. If the MSP cannot
accept another byte of data (e.g. while servicing an
internal inte rru pt), it holds the clock line I2C_CL low to
force the transmitter into a wait state. The I
Master must read back the clock line to detect whe n
the MSP is ready to rec eive the next I

2

C transmission.

2

C Bus

The positions within a transmission where this may
happen are indicated by “Wait” in Section 3.1.3. The
maximum wait period of the MSP during normal opera­tion mode is less than 1 ms.

3.1.1. Internal Hardware Error Handling

In case of any har dware problems (e.g. interr uption of
the power supply of the MSP), the MSP’s wait period is
extended to 1.8 m s. After this time per iod elaps es, the
MSP releases data and clock lines.

Indicating and solving the error status:

To indicate the error status, the remaining acknowl­edge bits of the actual I
Additionally, bit[14] of CONTROL is set to one. The
MSP can then be reset via the I

2

C-protocol will be left high.

2

C bus by transmitting

the reset condition to CONTROL.

Indication of reset:

Besides the possibility of hardware reset, the MSP can
also be reset by means of the RE SET bit in the CO N­TROL register by the controller via I

Due to the architecture o f the MSP 34x2G, the IC can­not react immediately to an I

Table 3–1: I

ADR_SEL Low

Mode Write Read Write Read Write Read

MSP device address 80

2

C Bus Device Addresses

2

C bus.

2

C request. The typical

(connected to DVSS)

hex

81

hex

Any reset, even caused by an unstable reset line etc.,
is indicated in bit[15] of CONTROL.

2

A general timing diagram of the I

C bus is shown in

Fig. 4–21 on page 74.

(connected to DVSUP)

84

hex

High

85

hex

88

hex

Left Open

89

Table 3–2: I2C Bus Subaddresses

Name Binary Value Hex Value Mode Function

CONTROL 0000 0000 00 Read/Write Write: Software reset of MSP (see Table 3–3)

WR_DEM 0001 0000 10 Write write address demodulator

Read: Hardware error status of MSP

hex

RD_DEM 0001 0001 11 Write read address demodulator
WR_DSP 0001 0010 12 Write write address DSP
RD_DSP 0001 0011 13 Write read address DSP

22 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

3.1.2. Description of CONTROL Register

Table 3–3: CONTROL as a Write Register

Name Subaddress Bit[15] (MSB) Bits[14:0]

CONTROL 00 hex 1 : RESET

0

0 : normal

Table 3–4: CONTROL as a Read Register (only MSP 34x2G-versions from A2 on)

Name Subaddress %LW>@06% Bit>@ BitV>@

CONTROL 00 hex Reset status after last reading of CONTROL:

0 : no reset occured
1 : reset occured

Reading of CONTROL will reset the bits[15,14] of CONTROL. After Power-on,

Internal hardware status:

not of interest
0 : no error occured
1 : internal error occured

bit[15] of CONTROL will be set; it must be

read once to be resetted.

3.1.3. Protocol Description

Write to DSP or Demodulator

Swrite

device

address

Wait

ACK sub-addr ACK addr-byte

high

ACK addr-byte

low

ACK data-byte-

high

ACK data-byte

low

ACK P

Read from DSP or Demodulator

Swrite

device

address

Wait

ACK sub-addr ACK addr-byte

high

ACK addr-byte

low

ACK S read

device

address

Wait

ACK data-byte-

high

ACK data-byte

Write to Control Registers

Swrite

device

address

Wait

ACK sub-addr ACK data-byte

high

ACK data-byte

low

ACK P

Read from Control Register

Swrite

device

address

Wait

Note: S = I

P = I

ACK 00hex ACK S read

2

C-Bus Start Condition from master

2

C-Bus Stop Condition from master

device

address

Wait

ACK data-byte-

high

ACK data-byte

low

NAK P

ACK = Acknowledge-Bit: LOW on I2C_DA from slave (= MSP, light gray) or master (= controller dark gray)
NAK = Not Acknowledge-Bit: HIGH on I2C_DA from master (dark gray) to indicate ‘End of Read’

or from MSP indicating internal error state

2

Wait = I

C-Clock line is held low, while the MSP is processing the I2C command.

This waiting time is max. 1 ms

NAK P

low

Micronas 23

MSP 34x2G PRELIMINARY DATA SHEET

I2C_DA

1
0

S P

I2C_CL

Fig. 3–1: I2C bus protocol (MSB first; data must be stable while clock is high)

3.1.4. Proposals for General MSP 34x2G

2

C Telegrams

I

3.1.4.1. Symbols

3.2. Start-Up Sequence:
Po wer-Up and I

After POWER ON or RESET (see Fi g. 4–20), the IC is
in an inactive state. All registers are in the Reset posi-

daw write device address (80
dar read device address (81

< Start Condition

hex

hex

, 84

, 85

hex
hex

or 88

or 89

hex

hex

)

)

tion (see Table 3–5 and Table 3 –6), the anal og ou tputs
are muted. The controll er has to initialize all registers
for which a non-default setting is necessary.

> Stop Condition
aa Address Byte
dd Data Byte

3.3. MSP 34x2G Programming Interface

3.3.1. User Registers Overview

3.1.4.2. Write Telegrams

The MSP 34x2G is controlled by means of user regis-

<daw 00 d0 00> write to CONTROL register
<daw 10 aa aa dd dd> write data into demodulator
<daw 12 aa aa dd dd> write data into DSP

ters. The complete list of all user registers is given in
Table 3–5 and Table 3–6. The registers are partitioned
into the Demodulator section (Subaddress 10
writing, 11

for reading) and the Baseband Proc ess-

hex

ing sections (Subaddress 12

3.1.4.3. Read Telegrams

reading).

2

C Controlling

hex

for writing, 13

hex

hex

for
for

<daw 00 <dar dd dd> read data from

CONTROL register

<daw 11 aa aa <dar dd dd> read data from demodulator
<daw 13 aa aa <dar dd dd> read data from DSP

3.1.4.4. Examples

<80 00 80 00> RESET MSP statically
<80 00 00 00> Clear RESET
<80 10 00 20 00 03> Set demodulator to stand. 03
<80 11 02 00 <81 dd dd> Read STATUS
<80 12 00 08 01 20> Set loudspeaker channel

source to NICAM and
Matrix to STEREO

hex

More examples of typical application protocols are
listed in Section 3.4. “Programming Tips” on page 52.

Write and read regis ters are 16-bit wide, whereby the
MSB is denoted bit[15]. Transmissions via I

2

C bus have
to take place in 16-bit words (two byte transfers, with the
most significant byte transferred first). All write registers,
except the demodulator write registers, are readable.

Unused parts of the 16-bit write registers must be zero.

Addresses not given in this table must not be
accessed.

For reasons of software compatibility to the
MSP 34xxD, a Manual/C omp a tibil it y Mo de i s available.
More read and wr ite registers to gether with a detaile d
description can be found in the “Appendix B: Manual /
Compatibility Mode” on page 91.

24 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

Table 3–5: List of MSP 34x2G Write Registers

Write Register Address

(hex)

I2C Subaddress = 10

; Registers are not readable

hex

Bits Description and Adjustable Range Reset See

Page

STANDARD SELECT 00 20 [15:0] Initial Programming of complete Demodulator 00 00 29

2

MODUS 00 30 [15:0] Demodulator, Automatic and I

2

I2S CONFIGURATION 00 40 [15:0] Configuration of I

I2C Subaddress = 12

; Registers are all readable by using I2C Subaddress = 13

hex

S format 00 00 32

hex

S options 00 00 31

Volume loudspeaker channel 00 00 [15:8] [+12 dB ... −114 dB, MUTE] MUTE 37
Volume / Mode loudspeaker channel [7:0] 1/8 dB Steps,

Reduce Volume / Tone Control / Compromise/

00

hex

Dynamic

Balance loudspeaker channel [L/R] 00 01 [15:8] [0...100 / 100% and 100 / 0...100%]

[

−127...0 / 0 and 0 / −127...0 dB]

100%/100% 38

Balance mode loudspeaker [7:0] [Linear / logarithmic mode] linear mode
Bass loudspeaker channel 00 02 [15:8] [
Treble loudspeaker channel 00 03 [15:8] [
Loudness loudspeaker channel 00 04 [15:8] [0 dB ...

+20 dB ... −12 dB] 0 dB 39
+15 dB ... −12 dB] 0 dB 40

+17 dB] 0 dB 41

Loudness filter characteristic [7:0] [NORMAL, SUPER_BASS] NORMAL
Spatial effect strength loudspeaker ch. 00 05 [15:8] [

−100%...OFF...+100%] OFF 42

Spatial effect mode/customize [7:0] [SBE, SBE

*)

Volume headphone
Volume / Mode headphone

channel 00 06 [15:8] [+12 dB ... −114 dB, MUTE] MUTE 37

*)

channel [7:0] 1/8 dB Steps, Reduce Volume / Tone Control 00

+PSE] SBE+PSE

hex

Volume SCAR T1 output channel 00 07 [15:8] [+12dB ... −114 dB, MUTE] MUTE 46

2

Loudspeaker source select 00 08 [15:8] [FM/AM, NICAM, SCART, I

S1, I2S2] FM/AM 36
Loudspeaker channel matrix [7:0] [SOUNDA, SOUNDB, STEREO, MONO.. .] SOUNDA 36
Headphone
Headphone
SCART1 source select 00 0a [15:8] [FM/AM, NICAM, SCART, I

*)

source select 00 09 [15:8] [FM/AM, NICAM, SCART, I2S1, I2S2] FM/AM 36

*)

channel matrix [7:0] [SOUNDA , SOUNDB , STEREO, MONO...] SOUNDA 36

2

S1, I2S2] FM/AM 36
SCART1 channel matrix [7:0] [SOUNDA, SOUNDB, STEREO, MONO.. .] SOUNDA 36

2

S source select 00 0b [15:8] [FM/AM, NICAM, SCART, I2S1, I2S2] FM/AM 36

I

2

S channel matrix [7:0] [SOUNDA, SOUNDB, STEREO, MONO ...] SOUNDA 36

I

2

Quasi-peak detector source select 00 0c [15:8] [FM/AM, NICAM, SCART, I

S1, I2S2] FM /A M 36
Quasi-peak detector matrix [7:0] [SOUNDA, SOUNDB, STEREO, MONO ...] SOUNDA 36
Prescale SCART input 00 0d [15:8] [00
Prescale FM/AM 00 0e [15:8] [00

hex

hex

... 7F
... 7F

]00

hex

]00

hex

hex

hex

35

34
FM matrix [7:0] [NO_MAT, GSTERERO, KSTERE O] NO_MAT 35
Prescale NICAM 00 10 [15:8] [00

2

Prescale I

S2 00 12 [15:8] [00

hex

hex

... 7F

... 7F
ACB : SCART Switches a. D_CTR_I/O 00 13 [15:0] Bits [15..0] 00
Beeper 00 14 [15:0] [00
Prescale I

2

S1 00 16 [15:8] [00

hex

hex

... 7F

... 7F

] (MSP 3412G, MSP 3452G only) 00

hex

]10

hex

]/[00

hex

hex

... 7F

hex

]10

]0/047

hex

hex

hex

hex

hex

35
35
47

35

Micronas 25

MSP 34x2G PRELIMINARY DATA SHEET

Table 3–5: List of MSP 34x2G Write Registers, continued

Write Register Address

(hex)

Bits Description and Adjustable Range Reset See

Page

Mode tone control 00 20 [15:8] [BASS/TREBLE, EQUALIZER] BASS/T REB 39
Equalizer loudspeaker ch. band 1 00 21 [15:8] [
Equalizer loudspeaker ch. band 2 00 22 [15:8] [
Equalizer loudspeaker ch. band 3 00 23 [15:8] [
Equalizer loudspeaker ch. band 4 00 24 [15:8] [
Equalizer loudspeaker ch. band 5 00 25 [15:8] [

+12 dB ... −12 dB] 0 dB 40
+12 dB ... −12 dB] 0 dB 40
+12 dB ... −12 dB] 0 dB 40
+12 dB ... −12 dB] 0 dB 40
+12 dB ... −12 dB] 0 dB 40

Acoustical Compensation loudspeaker 00 26 [15:0] C0_Main 0
Acoustical Compensation loudspeaker 00 27 [15:0] C1_Main 0
Acoustical Compensation loudspeaker 00 28 [15:0] C2_Main 0
Automatic Volume Correction 00 29 [15:8] [off, on, decay time] off 38
loudspeaker channel mute and invert 00 2B [7:0] [on, invert, mute] on 44
Subwoofer level adjust 00 2C [15:8] [+12 dB ...
Subwoofer corner frequency 00 2D [15:8] [50 Hz ... 400 Hz] 00

−30 dB, mute] 0 dB 44

hex

44

Subwoofer complementary high-pass [7:0] [off, on, MDB to Main] off 44

*)

Balance headphone

Balance mode headphone
Bass headphone
Treble headphone
Loudness headphone

channel [L/R] 00 30 [15:8] [0...100 / 100% and 100 / 0...100%]

*)

*)

channel 00 31 [15:8] [+20 dB ... −12 dB] 0 dB 39

*)

channel 00 32 [15:8] [+15 dB ... −12 dB] 0 dB 40

*)

channel 00 33 [15:8] [0 dB ... +17 dB] 0 dB 41

Loudness filter characteristic

[

−127...0 / 0 and 0 / −127...0 dB]

[7:0] [Linear mode / logarithmic mode] linear mode

*)

[7:0] [NORMAL, SUPER_BASS] NORMAL

100 %/100 % 38

Acoustical Compensation center 00 34 [15:0] C0_Center 0
Acoustical Compensation center 00 35 [15:0] C1_Center 0
Acoustical Compensation center 00 36 [15:0] C2_Center 0
Volume SCART2 output channel 00 40 [15:8] [

+12 dB ... −114 dB, MUTE] 00

SCART2 source select 00 41 [15:8] [FM, NICAM, SCART, I

hex

2

S1, I2S2] FM 36

46

SCART2 channel matrix [7:0] [SOUNDA, SOUNDB, STEREO, MONO...] SOUNDA 36
AUX/CS switch 00 48 [15] [AUX, CS] 0
Channel configuration [14:8] [STEREO/TWO_CHANNEL/MUL TI_CHANNEL] 00
Spatial effect for surround processing 00 49 [15:8] [0% - 100%] 00
Virtual surround effect strength 00 4A [15:8] [0% - 100%] 00
Decoder matrix 00 4B [15:8] [ADAPTIVE/PASSIVE/EFFECT] 00
Surround reproduction [ 7:4] [REAR_SPEAKER/FRONT_SPEAKER/PANORAMA/

0

3D_PANORAMA]
Center mode [3:0] [PHANTOM/NORMAL/WIDE/OFF] 0
Surround delay 00 4C [15:0] [5..31ms] 00
Noise Generator 00 4D [15:0] [NOISEL, NOISEC, NOISER, NOISES] 00

hex

hex

hex

hex

hex

hex

hex

hex

hex

48
48
49
49
50
50

50
50
50

26 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

Table 3–5: List of MSP 34x2G Write Registers, continued

Write Register Address

Bits Description and Adjustable Range Reset See

(hex)

MDB Effect Strength 00 68 [15:8] [0 dB ... 127 dB, off] off 44
MDB Amplitude Limit 00 69 [15:8] [0 dB FS... -32 dB FS] 0 dB FS 44
MDB Harmonic Content 00 6A [15:8] [0% ... 100%] 0% 45
MDB Low Pass Corner Frequency 00 6B [15:8] [50 Hz ... 300 Hz] 0 Hz 45
MDB High Pass Corner Frequency 00 6C [15:8] [20 Hz ... 300 Hz] 0 Hz 45

*)

In Multi Channel Mode, these registers are used for controlling baseband functions of the center and surround channels. Following relationship applies: Center

corresponds to the left headphone channel, Surround corresponds to the right headphone channel.

Table 3–6: List of MSP 34x2G Read Registers

Read Register Address

(hex)

I2C Subaddress = 11

; Registers are not writable

hex

STANDARD RESULT 00 7E [15:0] Result of Automatic Standard Detection

STATUS 02 00 [15:0] Monitoring of inter nal settings e.g. Stereo, Mono, Mute etc. . 33

Bits Description and Adjustable Range See

(MSP 3412G, MSP 3442G, MSP 3452G only)

Page

Page

33

I2C Subaddress = 13

; Registers are not writable

hex

Quasi peak readout left 00 19 [15:0] [0 0
Quasi peak readout right 00 1A [15:0] [00
MSP hardware version code 00 1E [15:8] [00
MSP major revision code [7:0] [00
MSP product code 00 1F [15:8] [00
MSP ROM version code [7:0] [00

... 7FFF

hex

... 7FFF

hex

... FF

hex

... FF

hex

... FF

hex

... FF

hex

] 16 bit two’s complement 51

hex

] 16 bit two’s compleme nt 51

hex

]51

hex

]51

hex

]51

hex

]51

hex

Micronas 27

MSP 34x2G PRELIMINARY DATA SHEET

3.3.2. Description of User Registers

Table 3–7: Standard Codes for STANDARD SELECT register

MSP Standard Code
(Data in hex)

TV Sound Standard Sound Carrier

Frequencies in MHz

MSP 34x2G Version

Automatic Standard Detection

00 01 Start Automatic Standard Detection and

all

set to detected standard

Standard Selection

00 02 M-Dual FM-Stereo 4.5/4.724212 3402, -12, -22, -42, -52
00 03 B/G -Dual FM -Stereo
00 04 D/K1-Dual FM-Stereo
00 05 D/K2-Dual FM-Stereo
00 06 D/K -FM-Mono with HDEV3

Standard Detection,

3)

HDEV3

SAT-Mono (i.e. Eutelsat, see Table 6–18)

1)

2)

2)

3)

, not detectable by Automatic

5.5/5.7421875 3402, -12, -52

6.5/6.2578125

6.5/6.7421875

6.5

00 07 D/K3-Dual FM-Stereo 6.5/5.7421875
00 08 B/G -NICAM-FM

1)

5.5/5.85 3412, -52
00 09 L -NICAM-AM 6.5/5.85
00 0A I -NICAM-FM 6.0/6.552
00 0B D/K -NICAM-FM

2)

00 0C D/K -NICAM-FM with HDEV2

4)

, not detectable by Automatic

6.5/5.85

6.5/5.85

Standard Detection, for China

00 0D D/K -NICAM-FM with HDEV3

, not detectable by Automatic

6.5/5.85

3)

Standard Detection, for China
00 20 BT SC-S ter eo 4.5 3422, -42, -52
00 21 BTSC-Mono

+ SAP

00 30 M-EIA-J Japan Stereo 4.5 3422, -42, -52
00 40 FM-Stereo Radio with 75

µs Deemphasis 10.7 3422, -42, -52

00 50 SAT-Mono (see Table 6–18) 6.5 3402, -12, -52
00 51 SAT-Stereo (see Table6–18) 7.02/7.20
00 60 SAT ADR (Astra Digital Radio) 6.12

1)

In case of Automatic Sound Select, the B/G-codes 3

2)

In case of Automatic Sound Select, the D/K-codes 4

3)

HDEV3: Max. FM deviation must not exceed 540 kHz

4)

HDEV2: Max. FM deviation must not exceed 360 kHz

hex
hex

and 8
, 5

hex

are equivalent.

hex

, 7

, and B

hex

are equivalent.

hex

28 Micronas

PRELIMINARY DATA SHEET MSP 34x2G

3.3.2.1. STANDARD SELECT Register

The TV sound standard of the MSP 34x2G demodula­tor is determined by the STANDARD SELECT regis ter.
There are two ways to use the STANDARD SELECT
register:

– Setting up the demodulator for a TV sound standard

by sending the corresponding standard code with a
single I

2

C-Bus transmission.

– Starting the Automatic Standard Detection for ter-

restrial TV standards. This is the most comfortable
way to set up the demodulator. Within 0.5 s, the
detection and set-up of the actual TV sound stan­dard is performed. The detected standard can be
read out of the STANDARD RESULT register by the
control processor. This feature is recommended for
the primary set-up of a TV set. Outputs should be

muted during Automatic Standard Detection.
The Standard Codes are listed in Table 3–7.
Selecting a TV sound standard via the STANDARD

SELECT register initializes the demodulator. This
includes: AGC-settings and carrier mute, tuning fre­quencies, FIR-filter se ttings, demodulation mode ( FM,
AM, NICAM), deemphasis and identification mode.

TV stereo sound standards that are unavailable for a
specific MSP version are processed in analog mono
sound of the standard. In that case, stereo or bil ingual
processing will not be possible.

For a complete setup of the TV sound processing from
analog IF input to the source selection, the transmi s­sions as shown in Section 3.5. are necessary.

3.3.2.2. Refresh of STANDARD SELECT Register

A general refresh o f t he ST A NDAR D S EL ECT r e gi ste r
is not allowed. However, the following method
enables watching the MSP 34x2G “alive” status and
detection of accidental resets (only versions A2 and
later):

– After Power-on, bit[15] of CONTROL will be set; it

must be read once to enable the reset-detection
feature.

– Reading of the CONTROL register and checking

the reset indicator bit[15] .

– If bit[15] is “0”, any refresh of the STANDARD

SELECT register is not allowed.

– If bit[15] is “1”, indicating a reset, a refresh of the

STANDARD SELECT register and all other MSPG
registers is required.

3.3.2.3. STANDARD RESULT Register

If Automatic Standard Detection is selected in the
STANDARD SELECT reg ister, status and result of the
Automatic Standard Detection process can be read out
of the STANDARD RESULT register. The possible
results are based on the mentioned Standard Code
and are listed in Table 3–8.

In cases where no sound standard h as been detected
(no standard present, too much noise, strong interfer­ers, etc.) the ST AND ARD RESULT register contains 00

. In that case, the con troller has to start fur ther

00

hex

actions (for example, set the standard according to a
preference list or by manual input).

For reasons of software compatibility to the
MSP 34x0D, a Manual/Compatibility mode is available.
A detailed description of this mode can be found on
page 91.

As long as the STANDARD RESULT register contain s
a value greater than 07 FF

, the Automatic Standard

hex

Detection is still active. During this period, the MODUS
and STANDARD SELECT registe r must not be written.
The STATUS register will be updated when the Auto­matic Standard Detection has finished.

If a present sound standard is unavailable for a specific
MSP version, it detects and switches to the analog
mono sound of this standard.

Example:
The MSP 3442G will detect a B/G-NICAM signal as
standard 3 and will switch to the analog FM-Mono
sound.

Micronas 29

MSP 34x2G PRELIMINARY DATA SHEET

Table 3–8: Results of the Automatic Standard
Detection

Broadcasted Sound
Standard

Automatic Stan dard

STANDARD RESULT Register

Read 007E

0000
Detection could not
find a sound standard

B/G-FM 0003
B/G-NICAM 0008
I 000A
FM-Radio 0040
M-Korea

0002
M-Japan
M-BTSC

0020

0030
L-AM

0009
D/K1
D/K2

0004
D/K3

L-NICAM

0009
D/K-NICAM

000B

hex

hex

hex

hex

hex

hex

(if MODUS[14,13]=00)

hex

(if MODUS[14,13]=01)

hex

(if MODUS[14,13]=10)

hex

(if MODUS[12]=0)

hex

(if MODUS[12]=1)

hex

(if MODUS[12]=0)

hex

(if MODUS[12]=1)

hex

Automatic Stan dard
Detection still active

>07FF

hex

30 Micronas