PRELIMINARY DATA SHEET
MICRONAS
INTERMETALL
MSP 3438G
Multistandard
Sound Processor Family
Edition July 27, 1999
6251-494-1PD
MICRONAS
MSP 3438G
Contents
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Section
1.
1.1.
1.2.
1.3.
2.
2.1.
2.2.
2.2.1.
2.2.2.
2.2.3.
2.2.4.
2.3.
2.4.
2.4.1.
2.5.
2.5.1.
2.5.2.
2.5.3.
2.6.
2.6.1.
2.6.2.
2.7.
2.7.1.
2.7.2.
2.8.
2.9.
2.10.
2.11.
3.
3.1.
3.1.1.
3.1.2.
3.1.3.
3.1.3.1.
3.1.3.2.
3.1.3.3.
3.1.3.4.
3.2.
3.3.
3.3.1.
3.3.2.
3.3.2.1.
3.3.2.2.
3.3.2.3.
3.3.2.4.
Title
Introduction
Features of the MSP 34x8G Family
MSP 34x8G Version List
MSP 34x8G Versions and their Application Fields
Functional Description
Architecture of the MSP 34x8G Family
Sound IF Processing
Analog Sound IF Input
Demodulator: Standards and Features
Preprocessing of Demodulator Signals
Automatic Sound Select
Preprocessing for SCART and I
2
S Input Signals
Source Selection and Output Channel Matrix
Mixing Unit
Audio Baseband Processing
Automatic Volume Correction (AVC)
Loudspeaker and Aux Outputs
Quasi-Peak Detector
SCART Signal Routing
SCART DSP In and SCART Out Select
Stand-by Mode
I
2
S Bus Interfaces
Synchronous I2S-Interface(s)
Asynchronous I2S-Interface
ADR Bus Interface
Digital Control I/O Pins and Status Change Indication
Preemphasis
Clock PLL Oscillator and Crystal Specifications
Control Interface
I
2
C Bus Interface
Device and Subaddresses
Protocol Description
Proposals for General MSP 34x8G I
2
C Telegrams
Symbols
Write Telegrams
Read Telegrams
Examples
Start-Up Sequence: Power-Up and I
2
C Controlling
MSP 34x8G Programming Interface
User Registers Overview
Description of User Registers
STANDARD SELECT Register
STANDARD RESULT Register
Write Registers on I
2
C Subaddress 10
hex
Read Registers on I
2
C Subaddress 11
hex
PRELIMINARY DATA SHEET
2
MICRONAS INTERMETALL
PRELIMINARY DATA SHEET
MSP 3438G
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Section
3.3.2.5.
3.3.2.6.
3.4.
3.5.
3.5.1.
3.5.2.
3.5.3.
3.5.4.
3.5.5.
3.5.6.
4.
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.6.1.
4.6.2.
4.6.2.1.
4.6.2.2.
4.6.2.3.
4.6.2.4.
4.6.3.
4.6.3.1.
4.6.3.2.
4.6.3.3.
4.6.3.4.
4.6.3.5.
4.6.3.6.
4.6.3.7.
4.6.3.8.
4.6.3.9.
4.6.3.10.
5.
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
Title
Write Registers on I
2
C Subaddress 12
hex
Read Registers on I
2
C Subaddress 13
hex
Programming Tips
Examples of Minimum Initialization Codes
B/G-FM (A2 or NICAM)
BTSC-Stereo
BTSC-SAP with SAP at Loudspeaker Channel
FM-Stereo Radio
Automatic Standard Detection
Software Flow for Interrupt driven STATUS Check
Specifications
Outline Dimensions
Pin Connections and Short Descriptions
Pin Descriptions
Pin Configurations
Pin Circuits
Electrical Characteristics
Absolute Maximum Ratings
Recommended Operating Conditions (T
A
= 0 to 70
°C)
General Recommended Operating Conditions
Analog Input and Output Recommendations
Recommendations for Analog Sound IF Input Signal
Crystal Recommendations
Characteristics
General Characteristics
Digital Inputs, Digital Outputs
Reset Input and Power-Up
I
2
C-Bus Characteristics
I
2
S-Bus Characteristics
Analog Baseband Inputs and Outputs, AGNDC
Sound IF Inputs
Power Supply Rejection
Analog Performance
Sound Standard Dependent Characteristics
Appendix A: Overview of TV-Sound Standards
NICAM 728
A2-Systems
BTSC-Sound System
Japanese FM Stereo System (EIA-J)
FM Satellite Sound
FM-Stereo Radio
MICRONAS INTERMETALL
3
MSP 3438G
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Section
6.
6.1.
6.2.
6.3.
6.3.1.
6.3.1.1.
6.3.1.2.
6.3.2.
6.3.3.
6.3.4.
6.4.
6.4.1.
6.4.2.
6.4.3.
6.4.4.
6.4.5.
6.5.
6.5.1.
6.5.2.
6.5.3.
6.5.4.
6.5.5.
6.6.
6.6.1.
6.6.2.
6.7.
6.7.1.
6.7.2.
6.8.
6.9.
7.
8.
Title
PRELIMINARY DATA SHEET
Appendix B: Manual Mode
Demodulator Write and Read Registers for Manual Mode
DSP Write and Read Registers for Manual Mode
Manual Mode: Description of Demodulator Write Registers
Automatic Switching between NICAM and Analog Sound
Function in Automatic Sound Select Mode
Function in Manual Mode
A2 Threshold
Carrier-Mute Threshold
DCO-Registers
Manual Mode: Description of Demodulator Read Registers
NICAM Mode Control/Additional Data Bits Register
Additional Data Bits Register
CIB Bits Register
NICAM Error Rate Register
Automatic Search Function for FM-Carrier Detection in Satellite Mode
Manual Mode: Description of DSP Write Registers
Additional Channel Matrix Modes
FM Fixed Deemphasis
FM Adaptive Deemphasis
NICAM Deemphasis
Identification Mode for A2 Stereo Systems
Manual Mode: Description of DSP Read Registers
Stereo Detection Registerfor A2 Stereo Systems
DC Level Register
Demodulator Source Channels in Manual Mode
Terrestrial Sound Standards
SAT Sound Standards
Exclusions of Audio Baseband Features
Phase Relationship of Analog Outputs
Appendix C: Application Circuit
Data Sheet History
4
MICRONAS INTERMETALL
PRELIMINARY DATA SHEET
MSP 3438G
formed by means of an adaptive sample rate con-
verter.
The processed standards include the multichannel
television sound signal (MTS) which conforms to the
recommendations of the BTSC, as well as the Japa-
nese FM-FM multiplex standard (EIA-J). For these
standards, optimum stereo separation is achieved
without any adjustment. In addition, the MSP 34x8G is
also able to receive FM stereo radio and, in conjunc-
tion with the DRP 3510, ASTRA Digital Radio (ADR).
The DBX noise reduction is performed alignment-free.
Multistandard Sound Processor Family
The hardware and software description in this docu-
ment is
valid only for the MSP 3438G version A1.
All new versions of the MSP 3438G and all other men-
tioned members of the MSP 34x8G family will be real-
ized within the MSP 44x8G family with an extended
feature set. Please refer to the appropriate data sheet.
1. Introduction
The MSP 34x8G family of Multistandard Sound Pro-
cessors covers the sound processing of all analog TV-
Standards worldwide, as well as the NICAM digital
sound standards. The full TV sound processing, start-
ing with analog sound IF signal-in, down to processed
analog AF-out, is performed on a single chip. Figure
1–1 shows a simplified functional block diagram of the
MSP 34x8G.
The high-quality A/D and D/A converters offer the full
audio bandwidth of 20 kHz and the backend DSP pro-
cessing is performed at a 48 kHz sample rate.
The MSP 34x8G has been designed for the usage in
hybrid set-top boxes and multimedia applications. Its
asynchronous I
2
S slave interface allows the reception
of digital stereo signals with arbitrary sample rates
ranging from 5 to 50 kHz. Synchronization is per-
The MSP 34x8G versions are pin and software com-
patible to other MSP families. Standard selection
requires only a single I
2
C transmission.
Several built-in automatic functions detect the actual
sound standard (Automatic Standard Detection) or
evaluate pilot levels and identification signals. Auto-
matic switching between mono/stereo/bilingual is per-
formed by the Automatic Sound Selection.
A status change indication signal makes polling of sta-
tus information unnecessary.
The ICs are produced in submicron CMOS technology
and are available in the following packages: PQFP80,
PLQFP64, PLCC68, and PSDIP64.
Sound IF1
ADC
Sound IF2
De-
modulator
Pre-
processing
Loud-
speaker
Sound
Processing
DAC
Loud-
speaker
I
2
S1
I
2
S2
I
2
S3
Source Select
synchron.
I
2
S
asynchron.
I
2
S
Prescale
Aux
Sound
Processing
DAC
Headphone
/Modulator
I
2
S
DAC
SCART1
SCART2
SCART3
SCART4
MONO
SCART
DSP
Input
Select
SCART1
ADC
Prescale
DAC
SCART
Output
Select
SCART2
Fig. 1–1:
Simplified functional block diagram of the MSP 34x8G
MICRONAS INTERMETALL
5
