CS4341A-KS(2002) Просмотр технического описания (PDF) - Cirrus Logic

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CS4341A-KS
(Rev.:2002)

24-Bit, 192 kHz Stereo DAC with Volume Control

Cirrus Logic 

CS4341A

5.4 CHANNEL A VOLUME CONTROL (ADDRESS 03H)

5.5 CHANNEL B VOLUME CONTROL (ADDRESS 04H)

7

MUTEx

0

6

VOLx6

0

5

VOLx5

0

4

VOLx4

0

3

VOLx3

0

2

VOLx2

0

1

VOLx1

0

0

VOLx0

0

5.5.1 MUTE (MUTE) BIT 7

Default = 0

0 - Disabled

1 - Enabled

Fucntion:

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

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

Cross bits in the Transition and Mixing Control (address 02h) register. The MUTEC will go active dur-

ing the mute period if the Mute function is enabled for both channels.

5.5.2 VOLUME (VOLx) BIT 0-6

Default = 0 dB (No Attenuation)

Function:

The digital volume control allows the user to attenuate the signal in 1 dB increments from 0 to -90 dB.

Volume settings are decoded as shown in Table 8. The volume changes are implemented as dictated

by the Soft and Zero Cross bits in the Transition and Mixing Control (address 02h) register. All volume

settings less than - 94 dB are equivalent to enabling the Mute bit.

Binary Code

0000000

0010100

0101000

0111100

1011010

Decimal Value

0

20

40

60

90

Volume Setting

0 dB

-20 dB

-40 dB

-60 dB

-90 dB

Table 8. example Digital Volume Settings

20

DS582PP1

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