參數(shù)資料
型號: AK4564VQ
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
中文描述: 16位編解碼器,配有ALC和麥克風/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 41/48頁
文件大小: 382K
代理商: AK4564VQ
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 41 -
ALC
Mode
Control 2
Addr
08H
ALC Mode Control 2
Default
LMTH1-0: ALC1 Limiter Detection Level / Recovery Counter Reset Level
LMTH1
LMTH0 ALC1 Limier Detection Level ALC1 Recovery Waiting Counter Reset Level
0
0
ALC1 Output
-2.5dBFS
0
1
ALC1 Output
-4.1dBFS
1
0
ALC1 Output
-6.0dBFS
1
1
ALC1 Output
-8.5dBFS
Table 21. ALC1 Limiter Detection Level / Recovery Counter Reset Level
FR: Enable ALC1 Fast Recovery Operation
0: Disable
1: Enable (Default)
If the impulse noise is supplied, the ALC1 recovery operation becomes the faster period than a set of
ZTM1-0 and WTM1-0 bits.
FSTM: This data determines the time of ALC1 recovery period (WTM1-0 bit), IVOL zero crossing timeout period
(ZTM1-0 bit), OATT zero crossing timeout period (TM1-0 bit) and FADEIN/OUT period (FDTM1-0 bit)
0: fs = 48kHz (Default)
1: fs = 32kHz
Register Name
D7
0
0
D6
FSTM
0
D5
D4
0
0
D3
0
0
D2
FR
1
D1
D0
0
0
LMTH1 LMTH0
1
0
-2.5dBFS > ALC1 Output
-4.1dBFS
-4.1dBFS > ALC1 Output
-6.0dBFS
-6.0dBFS > ALC1 Output
-8.5dBFS
-8.5dBFS > ALC1 Output
-12dBFS
Default
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