AK4440 AKM [Asahi Kasei Microsystems], AK4440 Datasheet - Page 24

• Manufacturer Part Number: AK4440
• Description: 192kHz 24-Bit 8ch DAC with 2Vrms Output
• Manufacturer: AKM [Asahi Kasei Microsystems]

■
Note: For addresses from 04H to 1FH, data must not be written.
■
MS1088-E-01
Addr
00H
01H
02H
03H
Register Map
Register Definitions
Addr Register Name
Addr Register Name
00H
01H
RSTN: Internal timing reset
DIF2-0: Audio data interface modes
TDM0-1: TDM Mode Select
ACKS: Master Clock Frequency Auto Setting Mode Enable
SMUTE: Soft Mute Enable
DEM1-0: De-emphasis Response
DFS1-0: Sampling speed control
Do not write the registers within 10msec after the power supplies are fed.
All data can be written to the registers even if PW1-4 and RSTN bits are “0”.
When RSTN bit goes to “0”, only internal timing is reset, and the registers are not initialized to their default
values.
Register Name
Control 1
Control 2
Power Down Control
DEM Control
Control 1
Control 2
0: Reset. Any registers are not initialized.
1: Normal operation
Default: “010”
TDM256
TDM128
0: Disable, Manual Setting Mode
1: Enable, Auto Setting Mode
0: Normal operation
1: DAC outputs soft-muted
Default: “01”, OFF
00: Normal speed
01: Double speed
Default
Normal
Master clock frequency is detected automatically at ACKS bit “1”. In this case, the setting of DFS1-0
bits is ignored. When this bit is “0”, DFS1-0 bits set the sampling speed mode.
Default
Mode
TDM1
0
0
1
ACKS
RRST
RRST
TDM0
(Table
ACKS
(Table
D7
D7
0
0
0
D7
0
1
1
(Table
1
1)
9,
TDM1
256fs fixed
128fs fixed
8)
Table
TDM1
D6
D6
0
0
0
0
0
BICK
32fs ∼
D6
0
10)
- 24 -
SLOW
SLOW
TDM0
D5
TDM0
0
D5
0
0
D5
0
SDTI
1-4
1-2
1
DFS1
D4
DFS1
DIF2
0
DIF2
D4
Normal, Double, Quad Speed
Normal Speed
Normal, Double Speed
0
0
D4
0
DFS0
DEMA
D3
Sampling Speed
DFS0
DIF1
0
PW4
DIF1
D3
D3
1
DEM1
D2
DEMB
DEM1
0
DIF0
DIF0
PW3
D2
D2
0
DEM0
D1
DEMC
DEM0
1
PW2
D1
D1
0
0
0
[AK4440]
SMUTE
RSTN
2011/03
SMUTE
DEMD
D0
RSTN
D0
PW1
0
1
D0