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ADAV4601

Rev. B | Page 46 of 60

Bit No.

Bit Name

Description

Default

Bit[2]

Enable HP1 loudness

When set to 1, it enables the loudness for the Headphone 1 channel.

0b = disabled

1b = enabled

Bit[1]

Enable HP1 beeper

When set to 1, it leaves only the beeper on the Headphone 1 channel. By default, this bit

is 0, which means the Headphone 1 channel input is added to the beeper.

0b = beeper and channel

1b = beeper only

Bit[0]

Enable spatializer

When set to 1, it enables the ADI spatializer.

0b = disabled

1b = enabled

Address 0x0123 Main Beeper Control Register (Default: 0x0005)

This register controls the main beeper block.

Table 41.

Bit No.

Bit Name

Description

Default

Bits[15:12]

Reserved

Always write as 0 if writing to this register.

0000

Bits[11:8]

Volume gain

These register bits control the volume of the beeper in the range of −38 dB to −10 dB in +2 dB steps.

0000

0x0 = off

0x1 = −38 dB

0x2 = −36 dB

...

0xE = −12 dB

0xF = −10 dB

Bits[7:6]

Reserved

Always write as 0 if writing to this register.

Bits[5:0]

Frequency

These register bits control the frequency of the beeper in the range of 0 Hz (beeper off ) to

11812.5 Hz in 187.5 Hz steps.

000101

0x00 = 0 Hz

0x01 = 187.5 Hz

0x02 = 375 Hz

0x03 = 562.5 Hz

0x04 = 750 Hz

0x05 = 937.5 Hz

0x06 = 1125 Hz

…

0x2E = 8625 Hz

0x2F = 8812.5 Hz

Address 0x0124 Low-Pass Filter (Subchannel) Register (Default: 0x0003)

This register is used to control the low-pass filter cutoff frequency for the subwoofer channel.

Table 42.

Bit No.

Bit Name

Description

Default

Bits[15:4]

Reserved

Always write as 0 if writing to this register.

000000000000

Bits[3:0]

LPF sub cutoff

These register bits control the cutoff frequency of the low-pass filter of the subwoofer

channel. The range of values is 60 Hz to 340 Hz in 20 Hz steps.

0011

0x0 = off

0x1 = 60 Hz

0x2 = 80 Hz

0x3 = 100 Hz

0x4 = 120 Hz

...

0xE = 320 Hz

0xF = 340 Hz

ADAV4601 Datasheet(PDF) 46 Page - Analog Devices

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