[AK4685]
D0
Addr
02H
Register Name
Interface Settings
R/W
D7
D6
D5
D4
D3
DIFB
R/W
1
D2
0
RD
0
D1
CKSB1 CKSB0 DIFC1 DIFC0
R/W
0
DIFA1 DIFA0
R/W
0
R/W
1
R/W
1
R/W
1
R/W
1
Default
DIFA1-0: Audio format control for PORTA
(Default: I2S)
DIFB: Audio format control for PORTB
(Default: I2S)
DIFC1-0: Audio format control for PORTC
(Default: I2S)
CKSB1-0: ADC Clock control for Master mode.
(Default: 256fs)
Addr
03H
Register Name
DAC Speed Control
R/W
D7
0
RD
0
D6
D5
D4
D3
0
RD
0
D2
D1
D0
DFS10
R/W
0
ACKS2 DFS21 DFS20
R/W
0
ACKS1 DFS11
R/W
0
R/W
0
R/W
0
R/W
0
Default
DFS11-10: DAC1 Sampling Speed Control
(Default: Normal Speed Mode)
These settings are ignored in Auto Setting Mode.
ACKS1: DAC1 Auto Setting Mode
0: Disable, Manual Setting Mode (default)
1: Enable, Auto Setting Mode
When ACKS1 bit = “1”, the master clock frequency is detected automatically and the DFS11-10 bits
are ignored. When ACKS1 bit = “0”, DFS11-10 bits set the sampling speed mode.
DFS21-20: DAC2 Sampling Speed Control
(Default: Normal Speed Mode)
These settings are ignored in Auto Setting Mode.
ACKS2: DAC2 Auto Setting Mode
0: Disable, Manual Setting Mode (default)
1: Enable, Auto Setting Mode
When ACKS2 bit = “1”, the master clock frequency is detected automatically and the DFS21-20 bits
are ignored. When ACKS2 bit = “0”, DFS21-20 bits set the sampling speed mode.
MS1106-E-00
2009/08
- 45 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
