adau1381 Analog Devices, Inc., adau1381 Datasheet - Page 69

• Manufacturer Part Number: adau1381
• Description: Low-noise Stereo Codec With Enhanced Recording And Playback Processing
• Manufacturer: Analog Devices, Inc.

Register 16427 (0x402B), Left DAC Attenuator
Bits[7:0], Left DAC Digital Attenuator
These bits control a 256-step, logarithmically spaced volume
control from 0 dB to −95.625 dB, in increments of 0.375 dB.
When a new value is entered into this register, the volume control
slews gradually to the new value, avoiding pops and clicks in the
process. The slew ramp is logarithmic, incrementing 0.375 dB
per audio frame.
Table 57. Left DAC Attenuator Register
Bits
[7:0]
Table 58. Right DAC Attenuator Register
Bits
[7:0]
Description
Left DAC digital attenuator, in increments of 0.375 dB with each step of slewing
00000000: 0 dB
00000001: −0.375 dB
00000010: −0.75 dB
…
11111110: −95. 25
11111111: −95.625 dB
Description
Right DAC digital attenuator, in increments of 0.375 dB with each step of slewing
00000000: 0 dB
00000001: −0.375 dB
00000010: −0.75 dB
…
11111110: −95. 25
11111111: −95.625 dB
Rev. A| Page 69 of 84
Register 16428 (0x402C), Right DAC Attenuator
Bits[7:0], Right DAC Digital Attenuator
These bits control a 256-step, logarithmically spaced volume
control from 0 dB to −95.625 dB, in increments of 0.375 dB.
When a new value is entered into this register, the volume control
slews gradually to the new value, avoiding pops and clicks in the
process. The slew ramp is logarithmic, incrementing 0.375 dB
per audio frame.
ADAU1381
Default
00000000
Default
00000000