adau1461 Analog Devices, Inc., adau1461 Datasheet - Page 55

• Manufacturer Part Number: adau1461
• Description: Sigmadsp Stereo, Low Power, 96 Khz, 24-bit Audio Codec With Integrated Pll Adau1461
• Manufacturer: Analog Devices, Inc.

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
Table 39. Record Mixer Right (Mixer 2) Control 1 Register
Bits
[4:3]
[2:0]
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
Table 40. Left Differential Input Volume Control Register
Bits
[7:2]
1
0
Bit Name
RDBOOST[1:0]
MX2AUXG[2:0]
Bit Name
LDVOL[5:0]
LDMUTE
LDEN
Bit 6
Bit 6
Reserved
Right single-ended auxiliary input gain from the RAUX pin in the record path, input to Mixer 2.
Description
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
00
01
10
11
Setting
000
001
010
011
100
101
110
111
Description
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 90 for a complete list
of the volume settings.
Setting
000000
000001
…
010000
…
111110
111111
Left differential input mute control.
0 = mute (default).
1 = unmute.
Left differential PGA enable. When enabled, the LINP and LINN pins are used as a full differential pair. When
disabled, these two pins are configured as two single-ended inputs with the signals routed around the PGA.
0 = disabled (default).
1 = enabled.
Bit 5
Bit 5
LDVOL[5:0]
Bit 4
Bit 4
Gain Boost
Mute (default)
0 dB
20 dB
Reserved
Auxiliary Input Gain
Mute (default)
−12 dB
−9 dB
−6 dB
−3 dB
0 dB
3 dB
6 dB
Volume
−12 dB (default)
−11.25 dB
…
0 dB
…
34.5 dB
35.25 dB
Rev. 0 | Page 55 of 88
RDBOOST[1:0]
Bit 3
Bit 3
Bit 2
Bit 2
Bit 1
Bit 1
LDMUTE
MX2AUXG[2:0]
ADAU1461
Bit 0
Bit 0
LDEN