adau1381 Analog Devices, Inc., adau1381 Datasheet - Page 48
adau1381
Manufacturer Part Number
adau1381
Description
Low-noise Stereo Codec With Enhanced Recording And Playback Processing
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADAU1381.pdf
(84 pages)
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ADAU1381
RECORD PATH CONFIGURATION
Register 16392 (0x4008), Digital Microphone and
Analog Beep Control
This register controls the digital microphone settings and the
analog beep input gain.
Bits[5:4], Digital Microphone Enable
These bits control the enable function for the stereo digital
microphones. The analog front end is powered down when
using a digital microphone.
Table 35. Digital Microphone and Analog Beep Control Register
Bits
[7:6]
[5:4]
3
[2:0]
Description
Reserved
Digital microphone enable
00: disabled
01: MICD1 enabled
10: MICD2 enabled
11: reserved
Beep input mute
0: muted
1: unmuted
Beep input gain. Note that Setting 100 sets the input beep gain to −23 dB.
000: 0 dB
001: +6 dB
010: +10 dB
011: +14 dB
100: −23 dB
101: +20 dB
110: +26 dB
111: +32 dB
Rev. A | Page 48 of 84
Bit 3, Beep Input Mute
This bit mutes the beep input.
Bits[2:0], Beep Input Gain
This bit controls the gain setting for the analog beep input; it
defaults at 0 dB and can be set as high as 32 dB. The beep signal
must be enabled in Register 16400 (0x4010), microphone bias
control and beep enable.
Default
00
0
000
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