参数资料
型号: ADAV801ASTZ
厂商: ANALOG DEVICES INC
元件分类: 消费家电
英文描述: Audio Codec for Recordable DVD
中文描述: SPECIALTY CONSUMER CIRCUIT, PDSO64
封装: ROHS COMPLIANT, MS-026BCD, LQFP-64
文件页数: 52/56页
文件大小: 1405K
代理商: ADAV801ASTZ
ADAV801
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
Rev. 0 | Page 52 of 56
GAINCNTR1–0
5, 4
RECMODE1–0
3, 2
LIMDET
1
ALCEN
0
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
RECTH1–0
6, 5
ATKTH1–0
4, 3
RECTIME1–0
2, 1
ATKTIME
0
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.
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