MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 38

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

MSP 34x1G
Table 3–11: Write Registers on I
38
Register
Address
SUBWOOFER OUTPUT CHANNEL
00 2C
00 2D
MDB CONTROL REGISTERS
00 68
00 69
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hex
hex
hex
Function
Subwoofer Level Adjustment
bit[15:8]
bit[7:0]
If MDB is added onto the main channel, this register should be set to 00
Subwoofer Corner Frequency
bit[15:8]
If MDB is active, SUBW_FREQ must be set to a value higher than the MDB Lowpass
Frequency (MDB_LP). Choosing the corner frequency of the subwoofer closer to
MDB_LP results in a narrower MDB frequency range. Recommended value:
1.5 MDB_LP
Subwoofer Complementary High-Pass Filter
bit[7:0]
MDB Effect Strength
bit[15:8]
bit[7:0]
The MDB effect strength can be adjusted in 1 dB steps. A value of 44
yield a medium MDB effect.
MDB Amplitude Limit
bit[15:8]
bit[7:0]
The MDB Amplitude Limit defines the maximum allowed amplitude at the output
of the MDB relative to 0 dbFS. If the amplitude exceeds MDB_LIM, the gain of
the MDB is automatically reduced. Note that the Volume Clipping Mode must be
set to “dynamic” (see page 32).
0C
...
01
00
FF
...
E3
E2
...
80
00
5...40
00
01
02
00
7F
00
00
FF
...
E0
00
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
hex
2
C Subaddress 12
+12 dB
+1 dB
Mute
must be zero
corner frequency in 10 Hz steps
(range: 50...400 Hz)
loudspeaker channel unfiltered
a complementary high-pass is processed in the loud-
speaker output channel
MDB added onto main channel
MDB OFF (default)
maximum MDB
must be zero
must be zero
0 dB (default)
1 dB
29 dB
30 dB
32 dBFS
0 dBFS (default limitation)
1 dBFS
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, continued
PRELIMINARY DATA SHEET
hex
hex
will
Name
SUBW_LEVEL
SUBW_FREQ
SUBW_HP
MDB_STR
MDB_LIM
Micronas