參數(shù)資料
型號: AK4682
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Multi-channel CODEC with 2Vrms Stereo Selector
中文描述: 多通道選擇與2Vrms的立體聲編解碼器
文件頁數(shù): 22/43頁
文件大?。?/td> 667K
代理商: AK4682
[AK4682]
MS0610-E-01
2007/07
- 22 -
Digital Volume Control
The AK4682 has channel-independent digital volume control (256 levels, 0.5dB step). The IATL7-0, IATR7-0 bits set
the volume level of each ADC channel (Table 16). The OAT1L7-0, OAT1R7-0, OAT2L7-0 and OAT2R7-0 bits set
each DAC channel (Table 17).
IATL7-0,
IATR7-0
00H
+24dB
01H
+23.5dB
02H
+22.0dB
:
2FH
+0.5dB
30H
31H
-0.5dB
FEH
-103dB
FFH
MUTE (-
)
Table 16.ADC Digital Volume (IATT)
OAT1L7-0,
OAT1R7-0,
OAT2L7-0,
OAT2R7-0
00H
+12dB
01H
+11.5dB
02H
+11.0dB
:
17H
+0.5dB
18H
19H
-0.5dB
FEH
-115dB
FFH
MUTE (-
)
Table 17.DAC Digital Volume (OATT)
ATSAD (ATSDA) bits (Table 18, Table 19) control the transition time of attenuation. The transition between each
attenuation level is the soft transition. Therefore, the switching noise does not occur in the transition.
Mode
ATSAD
0
0
1
1
Table 18. Transition time of attenuation (ADC)
Mode
ATSDA
0
0
1
1
Table 19. Transition time of attenuation (DAC)
Attenuation Level
:
0dB
:
(default)
Attenuation Level
:
0dB
:
(default)
ATT speed
1061/fs
256/fs
(default)
ATT speed
1061/fs
256/fs
(default)
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