AK4682 Datasheet, PDF (25/43 Pages) Asahi Kasei Microsystems – Multi-channel CODEC with 2Vrms Stereo Selector

[AK4682]
The stereo matrix control has the four channel independent soft transition using soft muting function.
DAC1 Lch Setting
(Control Register)
L
(L+R)/2
R
L
R
R
ATT Level
Attenuation
-∞
DAC1 Lch OUT
(1)
(1)
(1)
(3) (3)
(1)
GD
GD
(2)
GD (2)
(2)
L
(L+R)/2
L
R
Notes:
(1) ATT_DATA×ATT transition time (Table 18, Table 19). For example, in Normal Speed Mode, this time is
1061/fs cycles (256/fs) at ATT_DATA=00H. ATT transition of the soft-mute is from 00H to FFH
(2) The analog output corresponding to the digital input has a group delay, GD.
(3) If the soft mute is cancelled before attenuating to -∞ after starting the operation, the attenuation is discontinued
and returned to ATT level by the same cycle.
Figure 10. Soft Mute Function for Stereo Matrix Control
MS0610-E-01
- 25 -
2007/07