MSP4408G Ver la hoja de datos (PDF) - Micronas
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MSP4408G Datasheet PDF : 85 Pages
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PRELIMINARY DATA SHEET
MSP 44x8G
6.5. Manual Mode:
Description of DSP Write Registers
6.5.1. Additional Channel Matrix Modes
Main Matrix
Aux Matrix
SCART1 Matrix
SCART2 Matrix
I2S Matrix
Quasi-Peak
Detector Matrix
SUM/DIFF
AB_XCHANGE
PHASE_CHANGE_B
PHASE_CHANGE_A
A_ONLY
B_ONLY
00 08hex
00 09hex
00 0Ahex
00 41hex
00 0Bhex
00 0Chex
0100 0000
0101 0000
0110 0000
0111 0000
1000 0000
1001 0000
L
L
L
L
L
L
40hex
50hex
60hex
70hex
80hex
90hex
This table shows additional modes for the channel
matrix registers.
The sum/difference mode can be used together with
the quasi-peak detector to determine the sound mate-
rial mode. If the difference signal on channel B (right)
is near to zero, and the sum signal on channel A (left)
is high, the incoming audio signal is mono. If there is a
significant level on the difference signal, the incoming
audio is stereo.
6.5.2. FM Fixed Deemphasis
FM Deemphasis
50 µs
75 µs
OFF
00 0Fhex
0000 0000
RESET
0000 0001
0011 1111
H
00hex
01hex
3Fhex
6.5.3. FM Adaptive Deemphasis
FM Adaptive
Deemphasis WP1
OFF
WP1
00 0Fhex
0000 0000
RESET
0011 1111
L
00hex
3Fhex
Note: The Adaptive Deemphasis WP1 requires setting
of fixed deemphasis to 75µs.
6.5.4. NICAM Deemphasis
A J17 Deemphasis is always applied to the NICAM sig-
nal. It is not switchable.
6.5.5. Identification Mode for A2 Stereo Systems
Identification Mode
Standard B/G
(German Stereo)
Standard M
(Korean Stereo)
Reset of Ident-Filter
00 15hex
0000 0000
RESET
0000 0001
0011 1111
L
00hex
01hex
3Fhex
To shorten the response time of the identification algo-
rithm after a program change between two FM-Stereo
capable programs, the reset of the ident-filter can be
applied.
Sequence:
1. Program change
2. Reset ident-filter
3. Set identification mode back to standard B/G or M
4. Read stereo detection register
Micronas
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