CDB4360 datasheet(33/37 Pages) CIRRUS

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CS4360

DS517F2

6.4

VOLUME CONTROL (ADDRESSES 06H - 0BH)

6.4.1

MUTE (MUTE) BIT 7

Default = 0

0 - Disabled

1 - Enabled

Function:

The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output

will be retained. The muting function is affected, similar to attenuation changes, by the Soft and Zero

Cross bits. The MUTEC pin will become active during the mute period if the Mute function is enabled

for both channels in the pair.

6.4.2

VOLUME CONTROL (XX_VOL) BIT 0-6

Default = 0

Function:

The Digital Volume Control registers allow independent control of the signal levels in 1-dB increments

from 0 to -119 dB. Volume settings are decoded as shown in Table 10. The volume changes are im-

plemented as dictated by the Soft Ramp and Zero Cross bits. All volume settings less than -119 dB

are equivalent to enabling the MUTE bit.

6.5

MODE CONTROL 2 (ADDRESS 0DH)

6.5.1

SOFT RAMP AND ZERO CROSS CONTROL (SZC) BIT 6-7

Default = 10

00 - Immediate Change

01 - Zero Cross

10 - Soft Ramp

11 - Soft Ramp and Zero Cross

Function:

Immediate Change

When Immediate Change is selected all level changes will be implemented immediately in one step.

76543

210

xx_MUTE

xx_VOL6

xx_VOL5

xx_VOL4

xx_VOL3

xx_VOL2

xx_VOL1

xx_VOL0

00000

000

Binary Code

Decimal Value

Volume Setting

0001010

-10 dB

0010100

-20 dB

0101000

-40 dB

0111100

-60 dB

1011010

-90 dB

Table 10. Example Digital Volume Settings

76543

210

SZC1

SZC0

CPEN

PDN

POPG

FREEZE

MCLKDIV

SNGLVOL

10011

000

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