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MSP4458 Datasheet(PDF) 36 Page - Micronas

Part # MSP4458
Description  Multistandard Sound Processor
PDF  85 Pages
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Manufacturer  MICRONAS [Micronas]
Direct Link  http://www.micronas.com
Logo MICRONAS - Micronas

MSP4458 Datasheet(HTML) 36 Page - Micronas

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MSP 44x8G
PRELIMINARY DATA SHEET
36
Micronas
Fig. 3–2: Software flow diagram for a minimum demodulator setup for a European multistandard set applying the
Automatic Sound Select feature
Write SOURCE SELECT Settings
Example:
set main Source Select to "Stereo or A"
set aux Source Select to "Stereo or B"
set SCART_Out Source Select to "Stereo or A/B"
set Channel Matrix mode for all outputs to "Stereo"
Write 01 into
STANDARD SELECT Register
(Start Automatic Standard Detection)
Write MODUS Register:
Example for the essential bits:
[0] = 1
Automatic Sound Select = on
[1] = 1
Enable interrupt if STATUS changes
[8] = 0
ANA_IN1+ is selected
Define Preference for Automatic Standard
Detection:
[12] = 0
If 6.5 MHz, set SECAM-L
[14:13] = 3
Ignore 4.5 MHz carrier
Write FM/AM-Prescale
Write NICAM-Prescale
In case of interrupt from
MSP to Controller:
Read STATUS
Adjust Display
If bilingual, adjust Source Select setting if required
Result = 0
?
set previous standard or
set standard manually according
picture information
yes
no
expecting interrupt from MSP



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