Datasheet

ADAU1761
Rev. C | Page 56 of 92
R5: Record Mixer Left (Mixer 1) Control 1, 16,395 (0x400B)
This register controls the gain boost of the left channel differential PGA input and the gain for the left channel auxiliary input in the
record path. The left channel record mixer is referred to as Mixer 1.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved
LDBOOST[1:0] MX1AUXG[2:0]
Table 39. Record Mixer Left (Mixer 1) Control 1 Register
Bits Bit Name Description
[4:3] LDBOOST[1:0]
Left channel differential PGA input gain boost, input to Mixer 1. The left differential input uses the LINP (positive
signal) and LINN (negative signal) pins.
Setting Gain Boost
00 Mute (default)
01 0 dB
10
20 dB
11
Reserved
[2:0] MX1AUXG[2:0] Left single-ended auxiliary input gain from the LAUX pin in the record path, input to Mixer 1.
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