[AK4480]
Addr Register Name
01H Control 2
Default
D7
DZFE
0
D6
DZFM
0
D5
SD
1
D4
DFS1
0
D3
DFS0
0
D2
DEM1
0
D1
DEM0
1
D0
SMUTE
0
SMUTE: Soft Mute Enable
0: Normal Operation (default)
1: DAC outputs soft-muted.
DEM1-0: De-emphasis Response (Table 17)
Initial value is “01” (OFF).
SD:
Minimum delay Filter Enable
0: Sharp roll-off filter (default)
1: Minimum delay filter
SD
0
0
1
1
SLOW
Mode
Sharp roll-off filter
Slow roll-off filter
Minimum delay filter (default)
Reserved
0
1
0
1
Table 22. Digital Filter setting
DFS1-0: Sampling Speed Control (Table 8)
The default is “00” (Normal Speed). A click noise occurs when switching DFS1-0 bits.
DZFM: Data Zero Detect Mode
0: Channel Separated Mode (default)
1: Channel ANDed Mode
If the DZFM bit is set to “1”, the DZF pins of both channels become “H” only when the input data at both
channels are continuously zeros for 8192 LRCK cycles.
DZFE:
Data Zero Detect Enable
0: Disable (default)
1: Enable
Zero detect function can be disabled by DZFE bit “0”. In this case, the DZF pins of both channels are
always “L”.
MS1146-E-03
2012/01
- 35 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
