MSP3401G datasheet(34/104 Pages) MICRONAS

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MSP 34x1G

PRELIMINARY DATA SHEET

Micronas

00 20hex

Tone Control Mode Loudspeaker Channel

bit[15:8]

00hex

bass and treble is active

FFhex

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.

TONE_MODE

00 02hex

00 31hex

Bass Loudspeaker Channel

Bass Headphone Channel

bit[15:8]

extended range

7Fhex

+20 dB

78hex

+18 dB

70hex

+16 dB

68hex

+14 dB

normal range

60hex

+12 dB

58hex

+11 dB

...

08hex

+1dB

00hex

0dB

F8hex

−1dB

...

A8hex

−11 dB

A0hex

−12 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.

BASS_MAIN

BASS_AUX

Table 3–11: Write Registers on I2C Subaddress 12hex, continued

Address

Function

Name

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