Datasheet

ADAU1772 Data Sheet
Rev. B | Page 78 of 116
ADC2 VOLUME CONTROL REGISTER
Address: 0x0021, Reset: 0x00, Name: ADC2_VOLUME
When SINC_2_EN is set, the volume starts to ramp from −95.625 dB to the value in this register. The volume ramp time is (number of
steps) × 16/f
S
, where there are 256 steps between 0 dB and −95.625 dB. For example, with f
S
= 192 kHz, the volume ramps from −95.625 dB
to 0 dB in 21 ms.
Table 62. Bit Descriptions for ADC2_VOLUME
Bits Bit Name Settings Description Reset Access
[7:0] ADC_2_VOL ADC2 volume setting. 0x00 RW
00000000 0 dB
00000001 −0.375 dB
11111111 −95.625 dB
ADC3 VOLUME CONTROL REGISTER
Address: 0x0022, Reset: 0x00, Name: ADC3_VOLUME
When SINC_3_EN is set, the volume starts to ramp from −95.625 dB to the value in this register. The volume ramp time is (number of
steps) × 16/f
S
, where there are 256 steps between 0 dB and −95.625 dB. For example, with f
S
= 192 kHz, the volume ramps from −95.625 dB
to 0 dB in 21 ms.
Table 63. Bit Descriptions for ADC3_VOLUME
Bits Bit Name Settings Description Reset Access
[7:0] ADC_3_VOL ADC3 volume setting. 0x00 RW
00000000 0 dB
00000001 −0.375 dB
11111111
−95.625 dB