ADAU1961WBCPZ-R7 datasheet(48/73 Pages) AD

48 / 73 page

Data Sheet

ADAU1961

CONTROL REGISTERS

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Rev. B | 48 of 73

Table 31. Record Mixer Right (Mixer 2) Control 0 Register (Continued)

Bits

Bit Name

Description

110

3 dB

111

6 dB

MX2EN

Right channel mixer enable in the record path. Referred to as Mixer 2.

0 = mixer disabled (default).

1 = mixer enabled.

R7: Record Mixer Right (Mixer 2) Control 1, 16,397 (0x400D)

This register controls the gain boost of the right channel differential PGA input and the gain for the right channel auxiliary input in the record

path. The right channel record mixer is referred to as Mixer 2.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

RDBOOST[1:0]

MX2AUXG[2:0]

Table 32. Record Mixer Right (Mixer 2) Control 1 Register

Bits

Bit Name

Description

[4:3]

RDBOOST[1:0]

Right channel differential PGA input gain boost, input to Mixer 2. The right differential input uses the RINP (positive signal) and RINN

(negative signal) pins.

Setting

Gain Boost

Mute (default)

0 dB

20 dB

Reserved

[2:0]

MX2AUXG[2:0]

Right single-ended auxiliary input gain from the RAUX pin in the record path, input to Mixer 2.

Setting

Auxiliary Input 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

R8: Left Differential Input Volume Control, 16,398 (0x400E)

This register enables the differential path and sets the volume control for the left differential PGA input.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

LDVOL[5:0]

LDMUTE

LDEN

Table 33. Left Differential Input Volume Control Register

Bits

Bit Name

Description

[7:2]

LDVOL[5:0]

Left channel differential PGA input volume control. The left differential input uses the LINP (positive signal) and LINN (negative signal) pins.

Each step corresponds to a 0.75 dB increase in gain. See Table 69 for a complete list of the volume settings.

Setting

Volume

000000

−12 dB (default)

000001

−11.25 dB

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