PRELIMINARY DATA SHEET
MSP 44x8G
Multistandard Sound Processor Family
1. Introduction
This generation of TV sound processing ICs includes
versions for processing the multichannel television
sound (MTS) signal conforming to the standard recom-
mended by the Broadcast Television Systems Commit-
tee (BTSC). The DBX noise reduction, or alternatively,
Micronas Noise Reduction (MNR) is performed align-
ment free.
The MSP 44x8G 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. Fig. 1–1
shows a simplified functional block diagram of the
MSP 44x8G.
Other processed standards are the Japanese FM-FM
multiplex standard (EIA-J) and the FM Stereo Radio
standard.
The MSP 44x8G versions are pin and software com-
patible to other MSP families. Standard selection
requires only a single I2C transmission.
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 44x8G 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).
The MSP 44x8G has been designed for the usage in
hybrid set-top boxes and multimedia applications. Its
asynchronous I2S slave interface allows the reception
of digital stereo signals with arbitrary sample rates
ranging from 5 to 50 kHz. Synchronization is per-
formed by means of an adaptive sample rate con-
verter.
The ICs are produced in submicron CMOS technology
and are available in the following packages: PQFP80,
PLQFP64, and PSDIP64.
Sound IF1
Main
Pre-
processing
De-
Main
Sound
ADC
DAC
DAC
modulator
Channel
Processing
Sound IF2
I2S1
I2S2
synchron.
I2S
Aux
Sound
Processing
Aux
Channel
Prescale
Prescale
asychron.
I2S
I2S3
I2S
SCART1
SCART2
SCART3
DAC
DAC
SCART
DSP
Input
SCART1
ADC
SCART
Output
Select
Select
SCART4
MONO
SCART2
Fig. 1–1: Simplified functional block diagram of the MSP 44x8G
Micronas
5
MICRONAS [ MICRONAS ]
