參數(shù)資料
型號(hào): AKD4353VF
英文描述: Consumer IC
中文描述: 消費(fèi)性IC
文件頁(yè)數(shù): 26/33頁(yè)
文件大?。?/td> 251K
代理商: AKD4353VF
ASAHI KASEI
[AK4353]
MS0016-E-02
2001/05
- 26 -
Addr
03H
04H
Register Name
Lch ATT
Rch ATT
Default
D7
ATT7
ATT7
1
D6
ATT6
ATT6
1
D5
ATT5
ATT5
1
D4
ATT4
ATT4
1
D3
ATT3
ATT3
1
D2
ATT2
ATT2
1
D1
ATT1
ATT1
1
D0
ATT0
ATT0
1
Equation of attenuation level: ATT = 20 x Log
10
(Binary level / 255) [dB]
FFH: 0dB
:
01H: -48.1dB
00H: Mute
The transition between ATT values is same as soft mute operation. When current value is ATT1 and new
value is set as ATT2, ATT1 gradually becomes ATT2 with same operation as soft mute. If new value is set as
ATT3 before reaching ATT2, ATT value gradually becomes ATT3 from the way of transition.
Cycle time of soft mute: Ts=1024/fs
When PDN pin goes to “L”, the ATT values are set to 00H. The ATT values fade to FFH(0dB) during Ts after
PDN pin returns to “H”. When RSTN bit goes to “0”, the ATT values are set to 00H. The ATT values fade to their
current values after RSTN bit returns to “1”. Digital attenuator is independent of soft mute function.
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