參數(shù)資料
型號(hào)： AK4586
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi)： Codec
英文描述： MULTI CHANNEL AUDIO CODEC WITH DIR
中文描述： 多通道音頻編解碼器迪爾
文件頁(yè)數(shù)： 34/54頁(yè)
文件大?。?/td> 586K
代理商： AK4586
ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 34 -
Soft mute operation
Soft mute operation is performed at digital domain. When the SMUTE bit goes to “1”, the output signal is attenuated by
-
∞
during 1024 LRCK cycles. When the SMUTE bit is returned to “0”, the mute is cancelled and the output attenuation
gradually changes to 0dB during 1024 LRCK cycles. If the soft mute is cancelled within 1024 LRCK cycles after starting
the operation, the attenuation is discontinued and returned to 0dB. The soft mute is effective for changing the signal
source without stopping the signal transmission.
SMUTE
Attenuation
DZF1,2
1024/fs
(1)
0dB
-
∞
AOUT
1024/fs
8192/fs
GD
(2)
GD
(3)
(4)
Notes:
(1) The output signal is attenuated by -
∞
during 1024 LRCK cycles (1024/fs).
(2) Analog output corresponding to digital input have the group delay (GD).
(3) If the soft mute is cancelled within 1024 LRCK cycles, the attenuation is discontinued and returned to 0dB.
(4) When the input data of all channels in the group are continuously zeros for 8192 LRCK cycles, DZF pin
corresponding to the group goes to “H”. DZF pin immediately goes to “L” if input data of any channel in the group
is not zero after going DZF “H”.
Figure 20. Soft mute and zero detection
相關(guān)PDF資料
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