MSP3410D datasheet(42/83 Pages) MICRONAS

42 / 83 page

MSP 34x0D

PRELIMINARY DATA SHEET

Micronas

With positive bass settings, internal overflow may

occur even with overall volume less than 0 dB. This

will lead to a clipped output signal. Therefore, it is not

recommended to set bass to a value that, in conjunc-

tion with volume, would result in an overall positive

gain.

Loudspeaker channel: Bass and Equalizer cannot

work simultaneously (see section 7.3.22.: Mode Tone

Control). If Equalizer is used, Bass and Treble coeffi-

cients must be set to zero and vice versa.

7.3.4. Treble – Loudspeaker and

Headphone Channel

With positive treble settings, internal overflow may

occur even with overall volume less than 0 dB. This

will lead to a clipped output signal. Therefore, it is not

recommended to set treble to a value that, in conjunc-

tion with volume, would result in an overall positive

gain.

Loudspeaker channel: Treble and Equalizer cannot

work simultaneously (see section 7.3.22.: Mode Tone

Control). If Equalizer is used, Bass and Treble coeffi-

cients must be set to zero and vice versa.

7.3.5. Loudness – Loudspeaker and

Headphone Channel

Loudness increases the volume of low and high fre-

quency signals, while keeping the amplitude of the

1 kHz reference frequency constant. The intended

loudness has to be set according to the actual volume

setting. Because loudness introduces gain, it is not

recommended to set loudness to a value that, in con-

junction with volume, would result in an overall positive

gain.

By means of ‘Mode Loudness’, the corner frequency

for bass amplification can be set to two different val-

ues. In Super Bass mode, the corner frequency is

shifted up. The point of constant volume is shifted from

1 kHz to 2 kHz.

Treble Loudspeaker

0003hex

Treble Headphone

0032hex

+15 dB

0111 1000

78hex

+14 dB

0111 0000

70hex

+1 dB

0000 1000

08hex

+1/8 dB

0000 0001

01hex

0 dB

0000 0000

00hex

RESET

−1/8 dB

1111 1111

FFhex

−1 dB

1111 1000

F8hex

−11 dB

1010 1000

A8hex

−12 dB

1010 0000

A0hex

Loudness

Loudspeaker

0004hex

Loudness

Headphone

0033hex

+17 dB

0100 0100

44hex

+16 dB

0100 0000

40hex

+1 dB

0000 0100

04hex

0 dB

0000 0000

00hex

RESET

Mode Loudness

Loudspeaker

0004hex

Mode Loudness

Headphone

0033hex

Normal (constant

volume at 1 kHz)

0000 0000

00hex

RESET

Super Bass (constant

volume at 2 kHz)

0000 0100

04hex

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