ADAV803 Analog Devices, ADAV803 Datasheet - Page 53

• Manufacturer Part Number: ADAV803
• Description: Audio Codec
• Manufacturer: Analog Devices

Table 79. ALC Control Register 1
ADDRESS = 1111011 (0x7B)
FSSEL1–0
GAINCNTR1–0
RECMODE1–0
LIMDET
ALCEN
Table 80. ALC Control Register 2
ADDRESS = 1111100 (0x7C)
RECTH1–0
ATKTH1–0
RECTIME1–0
ATKTIME
FSSEL1–0
7, 6
These bits should equal the sample rate of the ADC.
00 = 96 kHz.
01 = 48 kHz.
10 = 32 kHz.
11 = Reserved.
These bits determine the limit of the counter used in limited recovery mode.
00 = 3.
01 = 7.
10 = 15.
11 = 31.
These bits determine which recovery mode is used by the ALC section.
00 = No recovery.
01 = Normal recovery.
10 = Limited recovery.
11 = Reserved.
These bits limit detect mode.
0 = ALC is used when either channel exceeds the set limit.
1 = ALC is used only when both channels exceed the set limit.
These bits enable ALC.
0 = Disable ALC.
1 = Enable ALC.
RES
7
Recovery threshold.
00 = −2 dB.
01 = −3 dB.
10 = −4 dB.
11 = −6 dB.
Attack threshold.
00 = 0 dB.
01 = −1 dB.
10 = −2 dB.
11 = −4 dB.
Recovery time selection.
00 = 32 ms.
01 = 64 ms.
10 = 128 ms.
11 = 256 ms.
Attack timer selection.
0 = 1 ms.
1 = 4 ms.
GAINCNTR1–0
5, 4
RECTH1–0
6, 5
Rev. 0 | Page 53 of 56
RECMODE1–0
3, 2
ATKTH1–0
4, 3
LIMDET
1
RECTIME1–0
2, 1
ALCEN
0
ATKTIME
0
ADAV803