AK4425A AKM [Asahi Kasei Microsystems], AK4425A Datasheet - Page 21

• Manufacturer Part Number: AK4425A
• Description: 192kHz 24-Bit Stereo ?? DAC with 2Vrms Output
• Manufacturer: AKM [Asahi Kasei Microsystems]

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MS1127-E-01
Addr
Addr
00H
01H
Register Definitions
SLOW: Slow Roll-off Filter Enable
RSTN: Internal timing reset control
PW: Power down control
DIF2-0: Audio data interface formats
ACKS: Master Clock Frequency Auto Setting Mode Enable
SMUTE: Soft Mute Enable
DEM1-0: De-emphasis Response
DFS1-0: Sampling speed control
Control 1
Control 2
Register Name
default
Register Name
default
1: Normal Operation
0: Reset. All registers are not initialized.
1: Normal Operation
The click noise, which occurs when MCLK frequency or DFS is changed, can be reduced by RSTN
bit.
0: Power down. All registers are not initialized.
Initial: “010”, Mode 2
0: Disable, Manual Setting Mode
1: Enable, Auto Setting Mode
Master clock frequency is detected automatically at ACKS bit “1”. In this case, the settings of DFS1-0
are ignored. When this bit is “0”, DFS1-0 set the sampling speed mode.
0: Normal operation
1: DAC outputs soft muted
Initial: “01”, OFF
00: Normal Speed Mode
01: Double Speed Mode
10: Quad Speed Mode
When changing between Normal/Double Speed Mode and Quad Speed Mode, some click noise
occurs.
0: Sharp Roll-off Filter
1: Slow Roll-off Filter
ACKS
D7
D7
1
0
0
(Table
D6
D6
(Table
0
0
0
0
7)
6)
SLOW
D5
D5
0
0
0
- 21 -
DIF2
DFS1
D4
D4
0
0
DFS0
DIF1
D3
D3
1
0
DEM1
DIF0
D2
D2
0
0
DEM0
PW
D1
D1
1
1
[AK4425A]
SMUTE
2011/03
RSTN
D0
D0
1
0