MSP3410B datasheet(5/68 Pages) MICRONAS

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PRELIMINARY DATA SHEET

MSP 3410 B

ITT Semiconductors

2. Features of the MSP 3410 B

2.1. Features of the Demodulator and Decoder

Sections

The MSP 3410 B is designed to simultaneously perform

digital demodulation and decoding of NICAM-coded TV

stereo sound, as well as demodulation of FM-mono TV

sound. Alternatively, two carrier FM systems according

to the German or Korean terrestrial specs or the satellite

specs can be processed with the MSP 3410 B.

Since it is simple and economic to demodulate AM

sound carriers with conventional sound-IF-mixing units,

the AM demodulation feature of the MSP will seldom be

used. However, for FM carrier detection in satellite oper-

ation the AM demodulation offers a powerful feature to

calculate the carrier field strength, which can be used for

automatic search algorithms. So the IC facilitates a first

step towards multistandard capability with its very flex-

ible application and may be used in TV-sets, satellite

tuners and video recorders.

The MSP 3410 B facilitates profitable multistandard ca-

pability, offering the following advantages:

– two selectable analog inputs (TV- and SAT-IF sources)

– Automatic Gain Control (AGC) for analog input: input

range: 0.14 – 3 Vpp

– integrated A/D converter for sound-IF inputs

– all demodulation and filtering is performed on chip and

is individually programmable

– simple realization of both digital NICAM standards

(UK/Scandinavia)

– no external filter hardware is required

– only one crystal clock (18.432 MHz) is necessary

– Pay-TV for NICAM-mode

– FM carrier level calculation for automatic search algo-

rithms and carrier mute function

– high deviation FM-mono mode (max. deviation:

approx.

±360 kHz)

2.2. Features of the DSP-Section

– flexible selection of audio sources to be processed

– digital input and output interfaces via S-Bus for DMA-

via AMU, and via I2S-Bus for external DSP-Proces-

sors featuring Graphic Equalizer, Surround Sound etc.

– performance of all deemphasis systems including

adaptive Wegener Panda 1 without external compo-

nents or controlling

– performance of D2MAC audio together with an

AMU 2481

– digitally performed FM-identification decoding and de-

matrixing

– digital baseband processing: volume, bass, treble,

pseudostereo and basewidth enlargement

– simplified controlling of volume, bass, treble etc.

– increased audio bandwidth for FM-Audio-signals

(20 Hz – 15 kHz ,

±1 dB)

2.3. Features of the Analog Section

– three selectable analog pairs of audio baseband in-

puts (=three SCART inputs)

Input level:

≤ 2 V RMS;

input impedance:

≥25 kΩ

– one selectable analog mono input (i.e. AM sound);

Input level:

≤ 2 V RMS;

input impedance:

≥10 kΩ

– two high quality A/D converters; S/N-Ratio:

≥85 dB

– 20 Hz to 20 kHz Bandwidth for SCART-to-SCART-

Copy facilities

– MAIN (loudspeaker) and AUX (headphones): two

pairs of 4-fold oversampled D/A-converters

Output level per channel: max. 1.4 VRMS

Output resistance: max. 5 k

Ω

S/N-Ratio:

≥85 dB at maximum volume

max. noise voltage in mute mode:

≤ 10 µV (BW: 20 Hz

... 16 kHz)

– one pair of four-fold oversampled D/A-converters sup-

plying two selectable pairs of SCART-Outputs. Output

level per channel: max. 2 V RMS, output resistance:

max. 0.5 k

Ω, S/N-Ratio: ≥85 dB

(20 Hz ... 16 kHz)

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