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PDF MSP3410D Data sheet ( Hoja de datos )
| Número de pieza | MSP3410D | |
| Descripción | Multistandard Sound Processors | |
| Fabricantes | Micronas | |
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MICRONAS
PRELIMINARY DATA SHEET
MSP 3400D,
MSP 3410D
Multistandard
Sound Processors
Edition May 14, 1999
6251-482-2PD
MICRONAS
1 page  
PRELIMINARY DATA SHEET
MSP 34x0D
Multistandard Sound Processors
Release Notes: The hardware description in this
document is valid for the MSP 34x0D version B3
and following versions. Revision bars indicate sig-
nificant changes to the previous edition.
1. Introduction
The MSP 34x0D is designed as a single-chip Multi-
standard Sound Processor for applications in analog
and digital TV sets, satellite receivers, video recorders,
and PC cards.
The MSP 34x0D, again, improves function integration:
The full TV sound processing, starting with analog
sound IF signal-in, down to processed analog AF-out, is
performed in a single chip. It covers all European
TV standards (some examples are shown in Table 3–1).
The MSP 3400D is fully pin and software-compatible
to the MSP 3410D, but is not able to decode NICAM. It
is also compatible to the MSP 3400C.
The IC is produced in submicron CMOS technology,
combined with high-performance digital signal pro-
cessing. The MSP 34x0D is available in the following
packages: PLCC68, PSDIP64, PSDIP52, PQFP80,
and PLQFP64.
Note: The MSP 3410D version is fully downward-com-
patible to the MSP 3410B, the MSP 3400B, and the
MSP 3400C. To achieve full software-compatibility with
these types, the demodulator part must be programmed
as described in the data sheet of the MSP 3410B.
1.1. Common Features of MSP 34x0D
– AVC: Automatic Volume Correction
– Subwoofer Output
– 5-band graphic equalizer (as in MSP 3400C)
– Enhanced spatial effect (pseudostereo/basewidth
enlargement as in MSP 3400C)
– headphone channel with balance, bass, treble, loud-
ness
– balance for loudspeaker and headphone channels
in dB units (optional)
– D/A converters for SCART2 out
– improved oversampling filters (as in MSP 3400C)
– Four SCART inputs
– Full SCART in/out matrix without restrictions
– SCART volume in dB units (optional)
– Additional I2S input (as in MSP 3400C)
– New FM identification (as in MSP 3400C)
– Demodulator short programming
– Autodetection for terrestrial TV sound standards
– Improved carrier mute algorithm
– Improved AM demodulation
– ADR together with DRP 3510A
– Dolby Pro Logic together with DPL 351xA
– Reduction of necessary controlling
– Less external components
– Significant reduction of radiation
1.2. Specific Features of MSP 3410D
– All NICAM standards
– Precise bit-error rate indication
– Automatic switching from NICAM to FM/AM or vice-
versa
– Improved NICAM synchronization algorithm
Micronas
5
5 Page 
PRELIMINARY DATA SHEET
MSP 34x0D
4.1.2. Quadrature Mixers
The digital input coming from the integrated A/D con-
verter may contain audio information at a frequency
range of theoretically 0 to 9 MHz corresponding to the
selected standards. By means of two programmable
quadrature mixers, two different audio sources, for
example NICAM and FM-Mono, may be shifted into
baseband position. In the following, the two main
channels are provided to process either:
– NICAM (MSP-Ch1) and FM/AM mono (MSP-Ch2)
simultaneously or, alternatively:
– FM-Mono (Ch2)
– FM2 (MSP-Ch1) and FM1 (MSP-Ch2).
Two programmable registers, to be divided up into a
low and a high part, determine frequency of the oscilla-
tor, which corresponds to the frequency of the desired
audio carrier.
4.1.3. Low-pass Filtering Block
for Mixed Sound IF Signals
Data shaping and/or FM bandwidth limitation is per-
formed by a linear phase finite impulse response (FIR)
filter. Just like the oscillators’ frequency, the filter coeffi-
cients are programmable and are written into the IC by
the CCU via the control bus. Thus, for example, differ-
ent NICAM versions can easily be implemented. Two
not necessarily different sets of coefficients are
required, one for MSP-Ch1 (NICAM or FM2) and one
for MSP-Ch2 (FM1 = FM-mono). In a corresponding
table several coefficient sets are proposed.
VREFTOP
AD_CV[7:1]
ANA_IN1+
ANA_IN2+
AGC
AD_CV[8]
ANA_IN-
AD
FRAME
NICAMA
DCO2
Pins
Internal signal lines (see fig. 4–2)
Demodulator Write Registers
DCO1
Oscillator
Mixer
FIR1
Lowpass
MODE_REG[6]
Phase and
AM Dis-
crimination
DQPSK
Decoder
Phase
Differen-
tiator
MSP sound IF channel 1
(MSP-Ch1: FM2, NICAM)
Amplitude
Carrier
Detect
AD_CV[9]
MSP3410D only
NICAM
Decoder
Mute
Lowpass
Mixer
MSP sound IF channel 2
(MSP-Ch2: FM1, AM) Amplitude
Carrier
Detect
Mixer
Oscillator
Lowpass
FIR2
Phase and
AM Dis-
crimination
Phase
Differen-
tiator
Mute
MODE_REG[8]
Lowpass
DCO2
Fig. 4–2: Architecture of demodulator and NICAM decoder section
ADR
NICAMA
NICAMB
FM2
IDENT
FM1/AM
Micronas
11
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| PDF Descargar | [ Datasheet MSP3410D.PDF ] | |
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