AK4440 Datasheet, PDF (24/31 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit 8ch DAC with 2Vrms Output

[AK4440]
■ Register Map
Addr
00H
01H
02H
03H
Register Name
Control 1
Control 2
Power Down Control
DEM Control
D7
ACKS
RRST
0
0
D6
TDM1
0
0
0
D5
TDM0
SLOW
0
0
D4
DIF2
DFS1
0
0
D3
DIF1
DFS0
PW4
DEMA
D2
DIF0
DEM1
PW3
DEMB
D1
0
DEM0
PW2
DEMC
D0
RSTN
SMUTE
PW1
DEMD
Note: For addresses from 04H to 1FH, data must not be written.
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 Definitions
Addr Register Name
00H Control 1
Default
D7
ACKS
1
D6
TDM1
0
D5
TDM0
0
D4
DIF2
0
D3
DIF1
1
D2
DIF0
0
D1
D0
0 RSTN
0
1
RSTN: Internal timing reset
0: Reset. Any registers are not initialized.
1: Normal operation
DIF2-0: Audio data interface modes (Table 8)
Default: “010”
TDM0-1: TDM Mode Select
Mode
Normal
TDM256
TDM128
TDM1
0
0
1
TDM0
0
1
1
BICK
32fs∼
256fs fixed
128fs fixed
SDTI
1-4
1
1-2
Sampling Speed
Normal, Double, Quad Speed
Normal Speed
Normal, Double Speed
ACKS: Master Clock Frequency Auto Setting Mode Enable
0: Disable, Manual Setting Mode
1: Enable, Auto Setting Mode
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.
Addr Register Name
01H Control 2
Default
D7
D6
D5
D4
D3
D2
D1
D0
RRST 0 SLOW DFS1 DFS0 DEM1 DEM0 SMUTE
0
0
0
0
0
0
1
0
SMUTE: Soft Mute Enable
0: Normal operation
1: DAC outputs soft-muted
DEM1-0: De-emphasis Response (Table 9, Table 10)
Default: “01”, OFF
DFS1-0: Sampling speed control (Table 1)
00: Normal speed
01: Double speed
MS1088-E-01
- 24 -
2011/03