[AK4438]
Addr
02H
Register Name
Control 3
R/W
D7
0
D6
0
D5
0
D4
0
D3
MONO1
R/W
D2
DZFB
R/W
0
D1
D0
SELLR1 SLOW
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Default
0
SLOW: Slow Roll-off Filter Enable (Table 11)
0: Sharp Roll-off Filter (default)
1: Slow Roll-off Filter
SELLR1: The data selection of DAC1 (Table 15)
Default value is “0”
DZB: Inverting Enable of DZF (Table 12)
0: DZF pin goes “H” at Zero Detection (default)
1: DZF pin goes “L” at Zero Detection
MONO1: DAC1 enters monaural output mode when MONO bit = “1” (Table 15).
0: Stereo mode (default)
1: MONO mode
Addr
03H
04H
Register Name
L1ch ATT
R1ch ATT
R/W
D7
ATT7
ATT7
R/W
1
D6
ATT6
ATT6
R/W
1
D5
ATT5
ATT5
R/W
1
D4
ATT4
ATT4
R/W
1
D3
ATT3
ATT3
R/W
1
D2
ATT2
ATT2
R/W
1
D1
ATT1
ATT1
R/W
1
D0
ATT0
ATT0
R/W
1
Default
ATT7-0: Attenuation Level (Table 13)
Default value is “FF” (0dB)
Addr Register Name
D7
INVL1
R/W
0
D6
INVR1
R/W
0
D5
INVL2
R/W
0
D4
D3
D2
D1
D0
SSLOW
R/W
05H
Control 4
R/W
INVR2
R/W
0
SELLR2
R/W
0
0
R/W
0
DFS2
R/W
0
Default
0
SSLOW: Digital Filter bypass mode Enable (Table 11)
0: Disable (default)
1: Enable
DFS2-0: Sampling Speed Control (Table 1)
Default value is “000” (Normal Speed).
A click noise occurs when switching DFS2-0 bits setting.
SELLR2: The data selection of DAC2 (Table 16)
Default value is “0”
INVL1: AOUTL1 Output Phase Inverting Bit (Table 15)
INVR1: AOUTR1 Output Phase Inverting Bit (Table 15)
INVL2: AOUTL2 Output Phase Inverting Bit (Table 16)
INVR2: AOUTR2 Output Phase Inverting Bit (Table 16)
0: Normal (default)
1: Inverted
016001925-E-00
2016/03
- 54 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
