AK4438 Datasheet, PDF (53/63 Pages) Asahi Kasei Microsystems – 108dB 768kHz 32bit 8-Channel Audio DAC

[AK4438]
■ Register Definitions
Addr
00H
Register Name
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
1
RSTN: Internal Timing Reset
0: Reset The DZF pin goes “H” but register values are not initialized.
1: Normal Operation (default)
DIF2-0: Audio Data Interface Modes (Table 9)
Default value is “110” (Mode 6: 32-bit MSB justified).
ACKS: Master Clock Frequency Auto Setting Mode Enable
0: Disable, Manual Setting Mode (default)
1: Enable, Auto Setting Mode
When ACKS bit = “1”, the MCLK frequency is detected automatically.
Addr
01H
Register Name
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 8)
Default value is “01” (OFF).
DFS2-0: Sampling Speed Control (Table 1)
Default value is “000” (Normal Speed).
A click noise occurs when switching DFS2-0 bits setting.
SD: Short delay Filter Enable. (Table 11)
0: Sharp roll off filter or Slow roll off filter
1: Short delay Sharp roll off filter or Short delay Slow roll off filter (default)
016001925-E-00
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2016/03