The hardware and software description in this doc-
ument is valid for the MSP 34x2G version A1 and
following versions.
PRELIMINARY DATA SHEET
Surround sound can be reproduced to a certain extent
with only two loudspeakers. The MSP 3452G 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 acoustical sensations. Virtual Dolby 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:
PSDIP64, PQFP80, and PLQFP64.
1. Introduction
The MSP 34x2G 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.
The family’s latest member, the MSP 3452G has all
functions of the MSP 3450G with the addition of Dolby
Surround Pro Logic and Virtual Dolby Surround sound
processing (See License Notice on page 5). The
MSP 3452G forms a superset of the functions of the
MSP 3451G, which contains the virtualizer 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 head-
phone outputs DACA_L and DACA_R are muted and
vice versa. Simultaneous processing of Headphone
signals and Dolby Surround Pro Logic is not possible.
1.1. Features
– All MSP 3450G features
– All MSP 3451G features as there are
- the 3D-PANORAMA virtualizer algorithm
- the PANORAMA virtualizer algorithm
- Noise Generator
– Dolby Surround Pro Logic processing
– Various other multichannel sound modes
– 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
ADC
Sound IF2
De-
modulator
Pre-
processing
Loud-
speaker
Sound
Processing
Headphone/
Surround
Sound
Processing
DAC
Loud-
speaker
Subwoofer
Center
Surround
Source Select
DAC
Headphone
I
2
S
I S1
I
2
S2
SCART1
SCART2
SCART3
SCART4
MONO
SCART
DSP
Input
Select
2
Prescale
DAC
SCART1
ADC
Prescale
DAC
SCART
Output
Select
SCART2
Fig. 1–1:
Block diagram of the MSP 34x2G
6
Micronas
MICRONAS [ MICRONAS ]
