PCM1608

21

SBAS164A

OVER

Oversampling Rate Control

This bit is Read/Write.

Default Value: 0

OVER = 0

64x Oversampling (default)

OVER = 1

128x Oversampling

OVER = 0

32x Oversampling (default)

OVER = 1

64x Oversampling

The OVER bit is used to control the oversampling rate of the delta-sigma DACs. The OVER = 1 setting is

B15

B14

B13

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

REGISTER 18

R/W

IDX6

IDX5

IDX4

IDX3

IDX2

IDX1

IDX0

RSV

RSV

RSV

RSV

RSV

RSV

MUT8

MUT7

R/W

Read/Write Mode Select

When R/W = 0, a write operation is performed.

When R/W = 1, a read operation is performed.

Default Value: 0

MUTx

Soft Mute Control

These bits are Read/Write.

Default Value: 0

MUTx = 0

Mute Disabled (default)

MUTx = 1

Mute Enabled

The mute bits, MUT7 through MUT8, are used to enable or disable the Soft Mute function for the

attenuators. When Mute is disabled (MUTx = 0), the attenuator and the DAC operate normally. When Mute

is enabled by setting MUTx = 1, the digital attenuator for the corresponding output will be decremented

from the current setting to the infinite attenuation setting one attenuator step (0.5dB) at a time. This

provides a quiet, “pop”-free muting of the DAC output. Upon returning from Soft Mute, by setting

MUTx = 0, the attenuator will be incremented one step at a time to the previously programmed attenuator

level.