参数资料
型号: ADAU1461WBCPZ-R7
厂商: Analog Devices Inc
文件页数: 53/88页
文件大小: 0K
描述: IC SIGMADSP 24BIT 96KHZ PLL 32
标准包装: 1,500
系列: SigmaDSP®
类型: 音频处理器
应用: 车载音频
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ
包装: 带卷 (TR)
ADAU1461
Rev. 0 | Page 57 of 88
R11: ALC Control 0, 16,401 (0x4011)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PGASLEW[1:0]
ALCMAX[2:0]
ALCSEL[2:0]
Table 43. ALC Control 0 Register
Bits
Bit Name
Description
[7:6]
PGASLEW[1:0]
PGA volume slew time when the ALC is off. The slew time is the period of time that a volume increase or decrease
takes to ramp up or ramp down to the target volume set in Register R8 (left differential input volume control)
and Register R9 (right differential input volume control).
Setting
Slew Time
00
24 ms (default)
01
48 ms
10
96 ms
11
Off
[5:3]
ALCMAX[2:0]
The maximum ALC gain sets a limit to the amount of gain that the ALC can provide to the input signal. This
protects small signals from excessive amplification.
Setting
Maximum ALC Gain
000
12 dB (default)
001
6 dB
010
0 dB
011
6 dB
100
12 dB
101
18 dB
110
24 dB
111
30 dB
[2:0]
ALCSEL[2:0]
ALC select. These bits set the channels that are controlled by the ALC. When set to right only, the ALC responds
only to the right channel input and controls the gain of the right PGA amplifier only. When set to left only, the
ALC responds only to the left channel input and controls the gain of the left PGA amplifier only. When set to
stereo, the ALC responds to the greater of the left or right channel and controls the gain of both the left and
right PGA amplifiers. DSP control allows the PGA gain to be set within the DSP or from external GPIO inputs.
These bits must be off if manual control of the volume is desired.
Setting
Channels
000
Off (default)
001
Right only
010
Left only
011
Stereo
100
DSP control
101
Reserved
110
Reserved
111
Reserved
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