adau1381 Analog Devices, Inc., adau1381 Datasheet - Page 63

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

PLAYBACK PATH CONFIGURATION
Register 16412 (0x401C), Playback Mixer Left Control
Bit 5, Left DAC Mute
This bit mutes the left DAC output. It does not have any slew
and is updated immediately when the register write has been
completed. This results in an abrupt cutoff of the audio output
and should therefore be preceded by a soft mute in the sound
engine or a slew mute using the DAC attenuator.
Bits[4:1], Left Playback Beep Gain
These bits set the gain of the beep signal in the left playback
path. If the zero-crossing detector is activated, the change in
gain is applied on the next detected zero crossing or when the
timeout period expires, whichever comes first. The gain control
is in 3 dB increments and should not be incremented more than
3 dB at a time in order to avoid audible artifacts on the output.
Table 47. Playback Mixer Left Control Register
Bits
[7:6]
5
[4:1]
0
Table 48. Playback Mixer Right Control Register
Bits
7
6
5
[4:1]
0
Description
Reserved
Left DAC mute
0: muted
1: unmuted
Left playback beep gain
0000: muted
0001: −15 dB
0010: −12 dB
0011: −9 dB
0100: −6 dB
0101: −3 dB
0110: 0 dB
0111: +3 dB
1000: +6 dB
Reserved
Description
Reserved
Right DAC mute
0: muted
1: unmuted
Reserved
Right playback beep gain
0000: muted
0001: −15 dB
...
1000: +6 dB
Reserved
Rev. A| Page 63 of 84
Register 16414 (0x401E), Playback Mixer Right Control
Bit 6, Right DAC Mute
This bit mutes the right DAC output. It does not have any slew
and is updated immediately when the register write has been
completed. This results in an abrupt cutoff of the audio output
and should therefore be preceded by a soft mute in the sound
engine or a slew mute using the DAC attenuator.
Bits[4:1], Right Playback Beep Gain
These bits set the gain of the beep signal in the right playback
path. If the zero-crossing detector is activated, the change in
gain is applied on the next detected zero crossing or when the
timeout period expires, whichever comes first. The gain control
is in 3 dB increments and should not be incremented more than
3 dB at a time in order to avoid audible artifacts on the output.
Default
Default
0
0000
0
0000
ADAU1381