MSP34X0G Datasheet, PDF (32/96 Pages) Micronas – Multistandard Sound Processor Family

MSP 34x0G
PRELIMINARY DATA SHEET
Table 3–11: Write Registers on I²C Subaddress 12_hex, continued
Register
Address
00 20_hex
00 02_hex
00 31_hex
Function
Name
Tone Control Mode Loudspeaker Channel
TONE_MODE
bit [15:8] 00_hex
FF_hex
bass and treble is active
equalizer is active
Defines whether Bass/Treble or Equalizer is activated for the loudspeaker chan-
nel. Bass and Equalizer cannot work simultaneously. If Equalizer is used, Bass,
and Treble coefficients must be set to zero and vice versa.
Bass Loudspeaker Channel
Bass Headphone Channel
BASS_MAIN
BASS_AUX
bit [15:8]
bit [15:8]
normal range
60_hex
58_hex
...
+12 dB
+11 dB
08_hex
00_hex
F8_hex
...
+1 dB
0 dB
−1 dB
A8_hex
A0_hex
−11 dB
−12 dB
extended range
7F_hex
78_hex
70_hex
68_hex
+20 dB
+18 dB
+16 dB
+14 dB
Higher resolution is possible: an LSB step in the normal range results in a gain
step of about 1/8 dB, in the extended range about 1/4 dB.
With positive bass settings, internal clipping may occur even with overall volume
less than 0 dB. This will lead to a clipped output signal. Therefore, it is not rec-
ommended to set bass to a value that, in conjunction with volume, would result
in an overall positive gain.
32
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