參數(shù)資料
型號: EVAL-ADAU1781Z
廠商: Analog Devices Inc
文件頁數(shù): 49/92頁
文件大小: 0K
描述: BOARD EVAL FOR ADAU1781
標準包裝: 1
系列: SigmaDSP®
主要目的: 音頻編解碼器
嵌入式: 是,DSP
已用 IC / 零件: ADAU1781
主要屬性: 立體聲,24 位,8 ~ 96 kHz 采樣率,GUI 工具
次要屬性: *
已供物品: *
ADAU1781
Rev. B| Page 53 of 92
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.
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.
Table 41. Digital Microphone and Analog Beep Control Register
Bits
Description
Default
[7:6]
Reserved
[5:4]
Digital microphone enable
00
00: disabled
01: MICD1 enabled
10: MICD2 enabled
11: reserved
3
Beep input mute
0
0: muted
1: unmuted
[2:0]
Beep input gain. Note that Setting 100 sets the input beep gain to 23 dB.
000
000: 0 dB
001: +6 dB
010: +10 dB
011: +14 dB
100: 23 dB
101: +20 dB
110: +26 dB
111: +32 dB
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