ASAHI KASEI
[AK4370]
D7
ATS
R/W
0
D6
DATTC
R/W
0
D5
LMUTE
R/W
1
D4
SMUTE
R/W
0
D3
BST1
R/W
0
D2
BST0
R/W
0
D1
DEM1
R/W
0
D0
DEM0
R/W
1
Addr Register Name
04H Mode Control 1
R/W
Default
DEM1-0: De-emphasis Filter Frequency Select (Table 9)
Default: “01” (OFF)
BST1-0: Low Frequency Boost Function Select (Table 10)
Default: “00” (OFF)
SMUTE: Soft Mute Control
0: Normal operation (Default)
1: DAC outputs soft-muted
LMUTE: Mute control for LOUT/ROUT (Note 19)
0: Normal operation. ATTS3-0 bits control attenuation value.
1: Mute. ATTS3-0 bits are ignored. (Default)
DATTC: DAC Digital Attenuator Control Mode Select
0: Independent (Default)
1: Dependent
At DATTC bit = “1”, ATTL7-0 bits control both channel attenuation levels, while register values of
ATTL7-0 bits are not written to the ATTR7-0 bits. At DATTC bit = “0”, the ATTL7-0 bits control the left
channel level and the ATTR7-0 bits control the right channel level.
ATS: Digital attenuator transition time setting (Table 8)
0: 1061/fs (Default)
1: 7424/fs
D7
ATTL7
ATTR7
R/W
D6
ATTL6
ATTR6
R/W
D5
ATTL5
ATTR5
R/W
D4
ATTL4
ATTR4
R/W
D3
ATTL3
ATTR3
R/W
D2
ATTL2
ATTR2
R/W
D1
ATTL1
ATTR1
R/W
D0
ATTL0
ATTR0
R/W
Addr Register Name
05H DAC Lch ATT
06H DAC Rch ATT
R/W
0
0
0
0
0
0
0
0
Default
ATTL7-0: Setting of the attenuation value of output signal from DACL (Table 7)
ATTR7-0: Setting of the attenuation value of output signal from DACR (Table 7)
Default: “00H” (MUTE)
MS0595-E-00
2007/03
- 41 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
