STA350B datasheet(58/94 Pages) STMICROELECTRONICS

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STA350B, STA350BW

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DocID018572 Rev 7

8.8.2

Audio preset register 2 (addr 0x0C)

8.8.3

AM interference frequency switching

8.8.4

Bass management crossover

XO3

XO2

XO1

XO0

AMAM2

AMAM1

AMAM0

AMAME

0000

Table 55. AM interference frequency switching bits

Bit

R/W

RST

Name

Description

0R/W

AMAME

Audio preset AM enable

0: switching frequency determined by PWMS setting

1: switching frequency determined by AMAM settings

Table 56. Audio preset AM switching frequency selection

AMAM[2:0]

48 kHz/96 kHz input fs

44.1 kHz/88.2 kHz input fs

000

0.535 MHz - 0.720 MHz

0.535 MHz - 0.670 MHz

001

0.721 MHz - 0.900 MHz

0.671 MHz - 0.800 MHz

010

0.901 MHz - 1.100 MHz

0.801 MHz - 1.000 MHz

011

1.101 MHz - 1.300 MHz

1.001 MHz - 1.180 MHz

100

1.301 MHz - 1.480 MHz

1.181 MHz - 1.340 MHz

101

1.481 MHz - 1.600 MHz

1.341 MHz - 1.500 MHz

110

1.601 MHz - 1.700 MHz

1.501 MHz - 1.700 MHz

Table 57. Bass management crossover

Bit

R/W

RST

Name

Description

4R/W

XO0

Selects the bass-management cross-over

frequency. A 1st-order hign-pass filter (channels 1

and 2) or a 2nd-order low-pass filter (channel 3) at

the selected frequency is performed.

5R/W

XO1

6R/W

XO2

7R/W

XO3

Table 58. Bass management crossover frequency

XO[3:0]

Crossover frequency

0000

User-defined

0001

80 Hz

0010

100 Hz

0011

120 Hz

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