AK4640_05 Datasheet, PDF (54/78 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4640]
Addr
06H
Register Name
DAC Control
R/W
Default
D7
TM1
R/W
0
D6
TM0
R/W
0
D5
SMUTE
R/W
0
D4
DATTC
R/W
1
D3
BST1
R/W
0
D2
BST0
R/W
0
D1
DEM1
R/W
0
D0
DEM0
R/W
1
DEM1-0: De-emphases response (Table 16)
Default is “01” (OFF).
BST1-0: Select Low Frequency Boost Function (Table 17)
Default is “00” (OFF).
DATTC: DAC Digital Attenuator Control Mode Select
0: Independent
1: Dependent (Default)
When DATTC= “1”, ATTL7-0 bits control both Lch and Rch at same time. ATTR7-0 bits are not changed
when the ATTL7-0 bits are written.
SMUTE: Soft Mute Control
0: Normal Operation (Default)
1: DAC outputs soft-muted
Soft mute operation is independent of digital attenuator and is performed in the digital domain.
TM1-0: Soft Mute Time Select (Table 24)
Default: “00” (1024/fs)
TM1
TM0
Cycle
0
0
1024/fs Default
0
1
512/fs
1
0
256/fs
1
1
128/fs
Table 24. Soft Mute Time Setting
MS0273-E-02
- 54 -
2005/04