ADAU1761BCPZ-R7 datasheet(53/92 Pages) AD

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Data Sheet

ADAU1761

CONTROL REGISTERS

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Rev. F | 53 of 92

Table 41. Record Power Management Register

Bits

Bit Name

Description

[6:5]

MXBIAS[1:0]

Mixer amplifier bias boost. Sets the boost level for the bias current of the record path mixers. In some cases, the boost level enhances the

THD + N performance.

Setting

Boost Level

Normal operation (default)

Boost Level 1

Boost Level 2

Boost Level 3

[4:3]

ADCBIAS[1:0]

ADC bias control. Sets the bias current for the ADCs based on the mode of operation selected.

Setting

ADC Bias Control

Normal operation (default)

Extreme power saving

Enhanced performance

Power saving

[2:1]

RBIAS[1:0]

Record path bias control. Sets the bias current for the PGAs and mixers in the record path.

Setting

Record Path Bias Control

Normal operation (default)

Reserved

Enhanced performance

Power saving

R4: Record Mixer Left (Mixer 1) Control 0, 16,394 (0x400A)

This register controls the gain of single-ended inputs for the left channel record path. The left channel record mixer is referred to as Mixer 1.

Table 42.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

LINPG[2:0]

LINNG[2:0]

MX1EN

Table 43. Record Mixer Left (Mixer 1) Control 0 Register

Bits

Bit Name

Description

[6:4]

LINPG[2:0]

Gain for a left channel single-ended input from the LINP pin, input to Mixer 1.

Setting

Gain

000

Mute (default)

001

−12 dB

010

−9 dB

011

−6 dB

100

−3 dB

101

0 dB

110

3 dB

111

6 dB

[3:1]

LINNG[2:0]

Gain for a left channel single-ended input from the LINN pin, input to Mixer 1.

Setting

Gain

000

Mute (default)

001

−12 dB

010

−9 dB

011

−6 dB

100

−3 dB

101

0 dB

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