MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 97

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

PRELIMINARY DATA SHEET
6.5. Manual/Compatibility Mode:
6.5.1. Additional Channel Matrix Modes
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.
Micronas
Loudspeaker Matrix
Headphone Matrix
SCART1 Matrix
SCART2 Matrix
I
Quasi-Peak
Detector Matrix
SUM/DIFF
AB_XCHANGE
PHASE_CHANGE_B
PHASE_CHANGE_A
A_ONLY
B_ONLY
2
S Matrix
Description of DSP Write Registers
00 08
00 09
00 0A
00 41
00 0B
00 0C
0100 0000
0101 0000
1000 0000
1001 0000
0110 0000
0111 0000
hex
hex
hex
hex
hex
hex
L
L
L
L
L
L
40
50
60
70
80
90
hex
hex
hex
hex
hex
hex
6.5.2. Volume Modes of SCART1/2 Outputs
Note: SCART Volume linear mode will not be sup-
ported in the future (documented for compatibility rea-
sons only).
6.5.3. FM Fixed Deemphasis
Note: This register is initialized during STANDARD
SELECTION and is automatically updated when Auto-
matic Sound Select (MODUS[0]=1) is on.
6.5.4. FM Adaptive Deemphasis
Note: This register is initialized during STANDARD
SELECTION and is automatically updated when Auto-
matic Sound Select (MODUS[0]=1) is on.
Volume Mode SCART1
Volume Mode SCART2
linear
logarithmic
Linear Mode
Volume SCART1
Volume SCART2
OFF
0 dB gain
(digital full scale (FS) to 2
V
V
FM Deemphasis
50 s
75 s
J17
OFF
FM Adaptive
Deemphasis WP1
OFF
WP1
6 dB gain ( 6 dBFS to 2
RMS
RMS
output)
output)
00 07
00 40
0000
RESET
0001
00 07
00 40
0000 0000
RESET
0100 0000
0111 1111
00 0F
0000 0000
RESET
0000 0001
0000 0100
0011 1111
00 0F
0000 0000
RESET
0011 1111
MSP 34x1G
hex
hex
hex
hex
hex
hex
[3:0]
[3:0]
0
1
H
H
00
40
7F
H
00
01
04
3F
L
00
3F
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
97