MSP34X2G datasheet(39/104 Pages) MICRONAS

tên linh kiện	MSP34X2G

Giải thích chi tiết về linh kiện	Multistandard Sound Processor Family with Dolby Surround Pro Logic

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PRELIMINARY DATA SHEET

MSP 34x2G

Micronas

00 04hex

00 33hex

Loudness Loudspeaker Channel

Loudness Headphone Channel

bit[15:8]

Loudness Gain

44hex

+17 dB

40hex

+16 dB

...

04hex

+1dB

00hex

0dB

bit[7:0]

Loudness Mode

00hex

normal (constant volume at 1 kHz)

04hex

Super Bass (constant volume at 2 kHz)

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 1-kHz reference frequency constant. The intended loud-

ness 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.

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.

LOUD_MAIN

LOUD_AUX

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

Address

Function

Name

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