参数资料
型号: AS3517-T
厂商: ams
文件页数: 60/94页
文件大小: 0K
描述: IC CODEC AFE AUDIO STER 81-CTBGA
标准包装: 2,000
类型: 音频编解码器
应用: 便携式音频,电话
安装类型: 表面贴装
封装/外壳: 81-TFBGA
供应商设备封装: 81-CTBGA(9x9)
包装: 带卷 (TR)
AS3517 V17
Data Sheet, Confidential
2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
Table 55 MIC2_R Register
Name
Base
Default
MIC2_R
2-wire serial
00h
Right Microphone Input 2 Register
Offset: 08h
Configures the gain from microphone 2 amplifier output up to mixer input (Σ).
This register is reset when the block is disabled in AudioSet1 register (14h) or at a
DVDD-POR. The register cannot be written when the block is disabled.
Bit
Bit Name
Default
Access
Bit Description
7
MIC2_AGC_OFF
0
R/W
Control of limiter AGC (automatic gain control). Limits high
dynamic range of electrete/MEMS microphone (e.g. user
shouts or blows into microphone)
0: automatic gain control enabled
1: automatic gain control disabled
6:5
PRE2_Gain
00
R/W
Sets the gain of the microphone 2 preamplifier (gain from
microphone inputs to N5)
00: gain set to 28 dB
01: gain set to 34 dB
10: gain set to 40 dB
11: reserved, do not use.
4:0
M2R_VOL
00000
R/W
volume settings for right microphone input 2, adjustable in 32
steps @ 1.5dB; gain from microphone amplifier (N4) to mixer
input (N12)
11111: 6 dB gain
11110: 4.5 dB gain
..
00001: -39 dB gain
00000: -40.5 dB gain
Table 56 MIC2_L Register
Name
Base
Default
MIC2_L
2-wire serial
00h
Left Microphone Input 2 Register
Offset: 09h
Configures the gain from microphone 2 amplifier output up to mixer input (Σ) and
controls MUTE switch E.
This register is reset when the block is disabled in AudioSet1 register (14h) or at a
DVDD-POR. The register cannot be written when the block is disabled.
Bit
Bit Name
Default
Access
Bit Description
7
M1SUP_OFF
0
R/W
0: microphone 2 supply enabled
1: microphone supply disabled
6
MUTE_OFF_D
0
R/W
Control of MUTE switch D
0: microphone input 2 set to mute
1: normal operation
5
RDET2_OFF
0
R/W
Disables the microphone 2 detect function (30kOhm pull-up
from MIC1S to AVDD) to use the terminal as ADC-10 input
0: microphone 1 detection enabled
1: microphone detection disabled
4:0
M2L_VOL
00000
R/W
volume settings for left microphone 2 input, adjustable in 32
steps @ 1.5dB; gain from microphone amplifier (N4) to mixer
input (N13)
11111: 6 dB gain
11110: 4.5 dB gain
..
00001: -39 dB gain
00000: -40.5 dB gain
Revision 1v3
62
- 93
ams
AG
Technical
content
still
valid
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