AK4635 AKM [Asahi Kasei Microsystems], AK4635 Datasheet - Page 51
AK4635
Manufacturer Part Number
AK4635
Description
16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
1.AK4635.pdf
(81 pages)
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Soft mute operation is performed in the digital input domain. When the SMUTE bit changes to “1”, the input signal is
attenuated by −∞ (“0”) during the cycle of 245/fs (31msec@fs=8kHz). When the SMUTE bit is returned to “0”, the mute
is cancelled and the input attenuation gradually changes to 0dB during the cycle of 245/fs (31msec@fs=8kHz). If the soft
mute is cancelled within the cycle of 245/fs (31msec@fs=8kHz), the attenuation is discontinued and returned to 0dB. The
soft mute for Playback operation is effective for changing the signal source without stopping the signal transmission.
(1) The input signal is attenuated by −∞ (“0”) during the cycle of 245/fs (31msec@fs=8kHz).
(2) Analog output corresponding to digital input has the group delay (GD).
(3) If the soft mute is cancelled within the cycle of 245/fs (31msec@fs=8kHz), the attenuation is discounted and returned
Rev. 0.6
SOFTMUTE
to 0dB within the same cycle.
S M U T E bit
A ttenuation
A nalog O utput
0dB
-∞
245/fs
(1)
Figure 44. Soft Mute Function
G D
- 51 -
(2)
245/fs
G D
(3)
[AK4635]
2007/10
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