CS4525 datasheet(72/91 Pages) CIRRUS

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DS726A1

CS4525

9.7.4

Treble Corner Frequency (TrebFc[1:0])

Default = 00

Function:

Sets the corner frequency for the treble shelving filter as shown below.

9.7.5

Bass Corner Frequency (BassFc[1:0])

Default = 01

Function:

Sets the corner frequency for the bass shelving filter as shown below.

9.7.6

Tone Control Enable (EnToneCtrl)

Default = 0

Function:

When set, enables the bass and treble shelving filters. When cleared, disables the bass and treble shelv-

ing filters.

9.8

Tone Control (Address 08h)

9.8.1

Treble Gain Level (Treb[3:0])

Default = 1000

Function:

Sets the gain/attenuation level of the treble shelving filter.The level can be adjusted in 1.5 dB increments

from +12.0 to -10.5 dB.

TrebFc[1:0] Setting

Treble Corner Frequency

00 ........................................ Selects Treble Fc 0 - Approximately 5 kHz

01 ........................................ Selects Treble Fc 1 - Approximately 7 kHz

10 ........................................ Selects Treble Fc 2 - Approximately 10 kHz

11......................................... Selects Treble Fc 3 - Approximately 15 kHz

BassFc[1:0] Setting

Bass Corner Frequency

00 ........................................ Selects Bass Fc 0 - Approximately 50 Hz

01 ........................................ Selects Bass Fc 1 - Approximately 100 Hz

10 ........................................ Selects Bass Fc 2 - Approximately 200 Hz

11......................................... Selects Bass Fc 3 - Approximately 250 Hz

EnToneCtrl Setting

Tone Control Filter State

0 .......................................... Bass and treble shelving filters disabled.

1 .......................................... Bass and treble shelving filters enabled.

543

Treble3

Treble2

Treble1

Treble0

Bass3

Bass2

Bass1

Bass0

Treb[3:0] Setting

Treble Shelving Filter Gain/Attenuation

0000 .................................... +12 dB

0001 .................................... +10.5 dB

.....................................

1000 .................................... 0 dB

.....................................

1110 ..................................... -9.0 dB

1111 ..................................... -10.5 dB

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