参数资料
型号: CS4299-JQZR
厂商: Cirrus Logic Inc
文件页数: 16/52页
文件大小: 0K
描述: IC CODEC AC 97 W/SRC 48-LQFP
标准包装: 2,000
系列: SoundFusion™
类型: 音频编解码器 '97
数据接口: 串行
分辨率(位): 18 b,20 b
ADC / DAC 数量: 1 / 1
三角积分调变:
动态范围,标准 ADC / DAC (db): 85 / 87
电压 - 电源,模拟: 4.75 V ~ 5.25 V
电压 - 电源,数字: 4.75 V ~ 5.25 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
CS4299
23
4.7
Microphone Volume Register (Index 0Eh)
Mute
Microphone Mute. Setting this bit mutes the MIC1 or MIC2 signal. The selection of the MIC1 or
MIC2 input pin is controlled by the MS bit in the General Purpose Register (Index 20h).
GN[4:0]
Microphone Volume Control. The GN[4:0] bits are used to control the gain level of the Micro-
phone input source to the Input Mixer. Each step corresponds to 1.5 dB gain adjustment, with
01000 = 0 dB. The total range is +12 dB to -34.5 dB gain. See Table 3 for further details.
20dB
Microphone 20 dB Boost. When ‘set’, the 20dB bit enables the +20 dB microphone boost block.
This bit allows for variable boost of 0 dB or +20 dB. Table 3 summarizes this behavior.
Default
8008h. This value corresponds to 0 dB gain and Mute ‘set’.
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Mute
00
20dB
0
GN4
GN3
GN2
GN1
GN0
GN[4:0]
Gain Level
20dB = 0
20dB = 1
00000
+12.0 dB
+32.0 dB
00001
+10.5 dB
+30.5 dB
……
...
00111
+1.5 dB
+21.5 dB
01000
0.0 dB
+20.0 dB
01001
-1.5 dB
+18.5 dB
……
...
11111
-34.5 dB
-14.5 dB
Table 3. Microphone Input Gain Values
DS319PP6
23
CS4299
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