Datasheet

ADAU1361
Rev. C | Page 48 of 80
R3: Record Power Management, 16,393 (0x4009)
This register manages the power consumption for the record path. In particular, the current distribution for the mixer boosts, ADCs,
record path mixers, and PGAs can be set to one of four modes. These settings are normal operation, power saving mode, enhanced
performance mode, and extreme power saving mode. Each of these modes draws current from a central bias. Enhanced performance
mode offers the highest performance with the trade-off of higher power consumption.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved MXBIAS[1:0] ADCBIAS[1:0] RBIAS[1:0] Reserved
Table 30. 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
00 Normal operation (default)
01 Boost Level 1
10 Boost Level 2
11 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
00 Normal operation (default)
01 Extreme power saving
10 Enhanced performance
11 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
00 Normal operation (default)
01 Reserved
10 Enhanced performance
11 Power saving