MSP3410B Datasheet, PDF (12/68 Pages) Micronas – Multistandard Sound Processor

MSP 3410 B
PRELIMINARY DATA SHEET
cessed at the same time as NICAM. Note that the NI-
CAM input signals are only available in the MSP 3410 B
version. While processing the adaptive deemphasis, no
dual carrier stereo (German or Korean) or NICAM pro-
cessing is possible. Identification values are not valid ei-
ther.
4.4. Dual Carrier FM Stereo/Bilingual Detection
In the German and Korean TV standard, audio informa-
tion can be transmitted in three modes: Mono, stereo or
bilingual. To obtain information about the current audio
operation mode, the MSP 3410 B detects the so-called
identification signal. Information is supplied via the Ste-
reo Detection Register to an external CCU.
IDENT
AM
Demodu-
lation
Stereo
Detection
Filter
Bilingual
Detection
Filter
Level
Detect
–
Level
Detect
Fig. 4–4: Stereo/bilingual detection
Stereo
Detection
Register
Analog
Inputs
SCARTL
SCARTR
FM1
FM2
Demodulated
IF
Inputs
NICAMA
NICAMB
Prescale
DC level readout FM1
Adaptive
Deemphasis
Deemphasis
50/75 µs
J17
DC level readout FM2
Prescale
Prescale
FM-Matrix
Deemphasis
J17
SBUS
Inputs
SBUS1
SBUS2
SBUS3
SBUS4
I²SL
I²S Bus
Inputs
I²SR
Fig. 4–5: Audio baseband processing (DFP-Firmware)
Loudspeaker
Channel
Matrix
Bass
Treble
Loudness
Spatial Effects
Volume
Balance
Loudspeaker L
Loudspeaker R
Loudspeaker
Outputs
Beeper
Headphone
Channel
Matrix
Volume
Headphone L
Headphone R
Headphone
Outputs
SCART
Channel
Matrix
Volume
SCARTL
SCARTR
SCART
Outputs
I²S
Channel
Matrix
I²SL
I²S
Outputs
I²SR
Quasi-Peak
Detector
Quasi peak readout L
Quasi peak readout R
Note: Actually, the source
of the Quasi-Peak Detector
is always the signal of the
loudspeaker channels.
NICAMA Internal signal lines (see fig. 4–2)
Table 4–1: Some examples for recommended channel assignments for demodulator and audio processing part
Mode
B/G-Stereo
B/G-Bilingual
NICAM-I-ST/
FM-mono
Sat-Mono
Sat-Stereo
Sat-Bilingual
Sat-High Dev.
Mode
MSP Sound IF-
Channel 1
FM2 (5.74 MHz): 2R
FM2 (5.74 MHz): Sound B
NICAM (6.552 MHz)
not used
7.2 MHz: R
7.38 MHz: Sound C
don’t care
MSP Sound IF-
Channel 2
FM1 (5.5 MHz): L+R
FM1 (5.5 MHz): Sound A
FM (6.0 MHz): mono
FM (6.5 MHz): mono
7.02 MHz: L
7.02 MHz: Sound A
6.552 MHz
FM-
Matrix
B/G Stereo
No Matrix
No Matrix
No Matrix
No Matrix
No Matrix
No Matrix
Channel-
Select
Speakers: FM
Speakers: FM
H. Phone: FM
Speakers: NICAM
H. Phone: FM
Speakers: FM
Speakers: FM
Speakers: FM
H. Phone: FM
Speakers: FM
H. Phone: FM
Channel
Matrix
Stereo
Speakers: Sound A
H. Phone: Sound B
Speakers: Stereo
H. Phone: Sound A
Sound A
Stereo
Speakers: Sound A
H. Phone: Sound B=C
Speakers: Sound A
H. Phone: Sound A
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ITT Semiconductors