MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 12

• Manufacturer Part Number: MSP3421G
• Description: Multistandard Sound Processor Family with Virtual Dolby Surround
• Manufacturer: MICRONAS [Micronas]

MSP 34x1G
Table 2–1: Performed actions of the Automatic Sound Selection
Table 2–2: Sound modes for the demodulator source channels with Automatic Sound Select
12
Selected TV Sound Standard
B/G-FM, D/K-FM, M-Korea,
and M-Japan
B/G-NICAM, L-NICAM, I-NICAM,
and D/K-NICAM
B/G-FM, B/G-NICAM
or
D/K1-FM, D/K2-FM, D/K3-FM,
and D/K-NICAM
BTSC-STEREO, FM Radio
BTSC-SAP
Broadcasted
Sound
Standard
M-Korea
B/G-FM
D/K-FM
M-Japan
B/G-NICAM
L-NICAM
I-NICAM
D/K-NICAM
D/K-NICAM
(with high
deviation FM)
BTSC
FM Radio
1)
2)
3)
The Automatic Sound Select process will automatically switch to the mono compatible analog standard.
The Automatic Sound Select process will automatically switch to the mono compatible digital standard.
The MSP Standard Codes are defined in Table 3–7 on page 23.
Selected
MSP Standard
Code
02
03, 08
04, 05, 07, 0B
30
08, 03
09
0A
0B, 04
0C, 0D
20, 21
20
21
40
3)
1)
2)
2)
, 05
2)
1)
Performed Actions
Evaluation of the identification signal and automatic switching to mono, stereo, or bilingual. Preparing four
demodulator source channels according to Table 2–2.
Evaluation of NICAM-C-bits and automatic switching to mono, stereo, or bilingual. Preparing four
demodulator source channels according to Table 2–2.
In case of bad or no NICAM reception, the MSP switches automatically to FM/AM mono and switches
back to NICAM if possible. A hysteresis prevents periodical switching.
Automatic searching for stereo/bilingual-identification in case of mono transmission. Automatic and non-
audible changes between Dual-FM and FM-NICAM standards while listening to the basic FM-Mono sound
carrier.
Example: If starting with B/G-FM-Stereo, there will be a periodical alternation to B/G-NICAM in the
absence of FM-Stereo/Bilingual or NICAM-identification. Once an identification is detected, the MSP
keeps the corresponding standard.
Evaluation of the pilot signal and automatic switching to mono or stereo. Preparing four demodulator
source channels according to Table 2–2. Detection of the SAP carrier.
In the absence of SAP, the MSP switches to BTSC-Stereo if available. If SAP is detected, the MSP
switches automatically to SAP (see Table 2–2).
Broadcasted
Sound Mode
MONO
STEREO
BILINGUAL:
Languages A and B
NICAM not available or
error rate too high
MONO
STEREO
BILINGUAL:
Languages A and B
MONO
STEREO
MONO+SAP
STEREO+SAP
MONO+SAP
STEREO+SAP
MONO
STEREO
FM/AM
(source select: 0)
Mono
Stereo
Left = A
Right = B
analog Mono
analog Mono
analog Mono
analog Mono
Mono
Stereo
Mono
Stereo
Left = Mono
Right = SAP
Left = Mono
Right = SAP
Mono
Stereo
Source Channels in Automatic Sound Select Mode
Stereo or A/B
(source select: 1)
Mono
Stereo
Left = A
Right = B
analog Mono
NICAM Mono
NICAM Stereo
Left = NICAM A
Right = NICAM B
Mono
Stereo
Mono
Stereo
Left = Mono
Right = SAP
Left = Mono
Right = SAP
Mono
Stereo
Stereo or A
(source select: 3)
Mono
Stereo
A
analog Mono
NICAM Mono
NICAM Stereo
NICAM A
Mono
Stereo
Mono
Stereo
Mono
Mono
Mono
Stereo
PRELIMINARY DATA SHEET
Stereo or B
(source select: 4)
Mono
Stereo
B
analog Mono
NICAM Mono
NICAM Stereo
NICAM B
Mono
Stereo
Mono
Stereo
SAP
SAP
Mono
Stereo
Micronas