參數(shù)資料
型號: AKD4564
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(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 45/48頁
文件大?。?/td> 382K
代理商: AKD4564
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 45 -
Output
Digital ATT Control
Addr
Register Name
0CH
Output Digital ATT Control
Default
ZCE: OATT Zero Crossing Enable Flag
0: Disable
1: Enable (Default)
OATT6-0: Output Digital Volume; 89 Level, 0dB ~ -65.25dB & Mute, 0.75dB step
This volume includes zero crossing detection circuit. When ZCE is “1”, the change of volume is detected
by zero crossing independently. Zero crossing timeout period is set by TM1-0 and FSTM bits.
When ZCE is “0”, the OATT is changed immediately.
DATA(HEX)
58H
57H
56H
3DH
3CH
3BH
03H
02H
01H
00H
Table 25. Attenuation value of Output Digital Volume
D7
ZCE
1
D6
D5
D4
D3
D2
D1
D0
OATT6 OATT5
1
OATT4
1
OATT3 OATT2 OATT1
1
0
OATT0
0
0
0
ATT Level
0dB
-0.75dB
-1.5dB
-20.25dB
-21.0dB
-21.75dB
-63.75dB
-64.5dB
-65.25dB
MUTE
Default
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