AK4458 Datasheet, PDF (70/84 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 8ch Premium DAC

[AK4458]
■ Register Definitions
Addr Register Name
00H Control 1
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
ACKS
0
0
0
DIF2
DIF1
DIF0 RSTN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
1
1
0
0
RSTN: Internal Timing Reset
0: Reset (default)
Internal clock timings are reset, but all other registers are not reset to their default value and R/W
access is still allowed.
1: Normal Operation
DIF2-0: Audio Data Interface Modes (Table 13)
Default value is “110” (Mode 6: 32-bit MSB justified).
Be careful because Format varies in TDM1 and TDM0.
ACKS: Master Clock Frequency Auto Setting Mode Enable (PCM only)
0: Disable : Manual Setting Mode (default)
1: Enable : Auto Setting Mode
When ACKS bit = “1”, the sampling frequency and MCLK frequency are detected automatically.
Addr Register Name
01H Control 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
SD
DFS1
DFS0 DEM11 DEM10 SMUTE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
1
0
0
0
1
0
SMUTE: Soft Mute Enable.
0: Normal Operation (default)
1: DAC outputs soft-muted.
DEM11-0: DAC1 De-emphasis Response (Table 17)
Default value is “01” (OFF).
DFS1-0: Sampling Speed Control (Table 2)
Default value is “00” (Normal Speed). See also register address 05H for DFS2.
A click noise occurs when switching DFS2-0 bits setting.
SD: Short delay Filter Enable. (Table 12)
0: Sharp roll-off filter
1: Short delay filter (default)
014011794-E-01
- 70 -
2015/08