adau1461 Analog Devices, Inc., adau1461 Datasheet - Page 59
adau1461
Manufacturer Part Number
adau1461
Description
Sigmadsp Stereo, Low Power, 96 Khz, 24-bit Audio Codec With Integrated Pll Adau1461
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADAU1461.pdf
(88 pages)
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R13: ALC Control 2, 16,403 (0x4013)
Bit 7
Table 45. ALC Control 2 Register
Bits
[7:4]
[3:0]
Bit Name
ALCATCK[3:0]
ALCDEC[3:0]
Bit 6
ALCATCK[3:0]
Description
ALC attack time. The attack time sets how fast the ALC starts attenuating after an increase in input level above
the target. A typical setting for music recording is 384 ms, and a typical setting for voice recording is 24 ms.
Setting
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ALC decay time. The decay time sets how fast the ALC increases the PGA gain after a decrease in input level
below the target. A typical setting for music recording is 24.58 seconds, and a typical setting for voice recording
is 1.54 seconds.
Setting
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Bit 5
Bit 4
Attack Time
6 ms (default)
12 ms
24 ms
48 ms
96 ms
192 ms
384 ms
768 ms
1.54 sec
3.07 sec
6.14 sec
12.29 sec
24.58 sec
49.15 sec
98.30 sec
196.61 sec
Decay Time
24 ms
48 ms
96 ms
192 ms
384 ms
768 ms
1.54 sec
3.07 sec
6.14 sec
12.29 sec
24.58 sec
49.15 sec
98.30 sec
196.61 sec
393.22 sec
786.43 sec
Rev. 0 | Page 59 of 88
Bit 3
Bit 2
ALCDEC[3:0]
Bit 1
ADAU1461
Bit 0
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