MSP 34x1G
PRELIMINARY DATA SHEET
Multistandard Sound Processor Family with Virtual
Dolby Surround
signal conforming to the standard recommended by
the Broadcast Television Systems Committee (BTSC).
The DBX noise reduction, or alternatively, MICRONAS
Noise Reduction (MNR) is performed alignment free.
The hardware and software description in this doc-
ument is valid for the MSP 34x1G version A1 and
following versions.
Other processed standards are the Japanese FM-FM
multiplex standard (EIA-J) and the FM Stereo Radio
standard.
1. Introduction
Current ICs have to perform adjustment procedures in
order to achieve good stereo separation for BTSC and
EIA-J. The MSP 34x1G has optimum stereo perfor-
mance without any adjustments.
The MSP 34x1G family of single-chip Multistandard
Sound Processors covers the sound processing of all
analog TV-Standards worldwide, as well as the NICAM
digital sound standards. The full TV sound processing,
starting with analog sound IF signal-in, down to pro-
cessed analog AF-out, is performed on a single chip.
Figure 1–1 shows a simplified functional block diagram
of the MSP 34x1G.
All MSP 34x1G versions are pin and software down-
ward-compatible to the MSP 34x0D. The MSP 34x1G
further simplifies controlling software. Standard selec-
tion requires a single I2C transmission only.
The MSP 34x1G has all functions of the MSP 34x0G
with the addition of a virtual surround sound feature.
The MSP 34x1G has built-in automatic functions: The
IC is able to detect the actual sound standard automat-
ically (Automatic Standard Detection). Furthermore,
pilot levels and identification signals can be evaluated
internally with subsequent switching between mono/
stereo/bilingual; no I2C interaction is necessary (Auto-
matic Sound Selection).
Surround sound can be reproduced to a certain extent
with two loudspeakers. The MSP 34x1G includes our
virtualizer algorithm “3D-PANORAMA” which has been
approved by the Dolby1) Laboratories for compliance
with the "Virtual Dolby Surround" technology. In addi-
tion, the MSP 34x1G includes our “PANORAMA” algo-
rithm.
The ICs are produced in submicron CMOS technology.
The MSP 34x1G is available in the following pack-
ages: PLCC68, PSDIP64, PSDIP52, PQFP80, and
PLQFP64.
These TV sound processing ICs include versions for
processing the multichannel television sound (MTS)
Loud-
speaker
Loud-
speaker
Sound
Sound IF1
De-
modulator
Pre-
processing
ADC
DAC
DAC
Sound IF2
Subwoofer
Processing
Headphone
Sound
Headphone
2
Processing
I S1
Prescale
Prescale
2
I S2
2
I S
SCART1
SCART2
SCART3
DAC
DAC
SCART
DSP
Input
SCART1
SCART2
ADC
SCART
Output
Select
Select
SCART4
MONO
Fig. 1–1: Simplified functional block diagram of the MSP 34x1G
6
MICRONAS INTERMETALL
MICRONAS [ MICRONAS ]
