參數(shù)資料
型號(hào)： MSP3430
廠商： Electronic Theatre Controls, Inc.
英文描述： Multistandard Sound Processor Family
中文描述： 多標(biāo)準(zhǔn)聲音處理器系列
文件頁(yè)數(shù)： 97/101頁(yè)
文件大?。?/td> 752K
代理商： MSP3430
PRELIMINARY DATA SHEET
MSP 34x0G
Micronas
97
6.8. Exclusions of Audio Baseband Features
In general, all functions can be switched independently.
Two exceptions exist:
1. NICAM cannot be processed simultaneously with
the FM2 channel.
2. FM adaptive deemphasis cannot be processed
simultaneously with FM-identification.
6.9. Phase Relationship of Analog Outputs
The analog output signals: Loudspeaker, headphone,
and SCART2 all have the same phases. The user
does not need to correct output phases when using
these analog outputs directly. The SCART1 output has
opposite phase.
Using the I
2
S-outputs for other DSPs or D/A convert-
ers, care must be taken to adjust for the correct phase.
If the attached coprocessor is one of the MSP family,
the following schematics help to determine the phase
relationship.
6.10. Compatibility Restrictions to MSP 34x0D
The MSP 34x0G is fully hardware compatible to the
MSP 34x0D. However, to substitute a MSP 34x0D by
the corresponding MSP 34x0G, the controller software
has to be adapted slightly:
1. The register FM-Matrix (00 0E
hex
low part) must be
changed from
“
no matrix (00
hex
)
”
to
“
sound A mono
(03
hex
)
”
during mono transmission of all TV-sound
standards (see also Table 6
–
17).
2. With the MSP 34x0G, the STANDARD SELECTION
initializes the FM-deemphasis, which is not the case
for the MSP 34x0D. So, if STANDARD SELECTION
is applied, this I
2
C instruction can be omitted.
Fig. 6
–
2:
Phase diagram of the MSP 34x0G
SCART2-Ch.
SCART1
SCART1
SCART2
SCART4
SCART3
MONO
Loudspeaker
Audio
Baseband
Processing
SCART
DSP
Input
Select
SCART
Output Select
Headphone
SCART1-Ch.
SCART2
I
2
S_OUT1/2
I
2
S_IN1/2
MONO, SCART1...4
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