MSP3421G MICRONAS [Micronas], MSP3421G Datasheet - Page 36

• 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
36
Register
Address
00 04
00 33
hex
hex
Function
Loudness Loudspeaker Channel
Loudness Headphone Channel
bit[15:8]
bit[7:0]
Higher resolution of Loudness Gain is possible: An LSB step results in a gain
step of about 1/4 dB.
Loudness increases the volume of low- and high-frequency signals, while keep-
ing the amplitude of the reference frequency constant. The intended loudness
has to be set according to the actual volume setting. Because loudness intro-
duces gain, it is not recommended to set loudness to a value that, in conjunction
with volume, would result in an overall positive gain.
The corner frequency for bass amplification can be set to two different values. In
Super Bass mode, the corner frequency is shifted up. The point of constant vol-
ume is shifted from 1 kHz to 2 kHz.
Loudness Gain
44
40
...
04
03
02
01
00
Loudness Mode
00
04
hex
hex
hex
hex
hex
hex
hex
hex
hex
2
C Subaddress 12
normal (constant volume at 1 kHz)
Super Bass (constant volume at 2 kHz)
17 dB
16 dB
1 dB
0.75 dB
0.5 dB
0.25 dB
0 dB
hex
, continued
PRELIMINARY DATA SHEET
Name
LOUD_MAIN
LOUD_AUX
Micronas