AK4390 Datasheet, PDF (26/32 Pages) Asahi Kasei Microsystems – Ultra Low Latency 32-Bit ΔΣ DAC

[AK4390]
Addr Register Name
02H Control 3
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
DZFB
0
0
0
0
0
0
0
0
0
0
DZFB: Inverting Enable of DZF
0: DZF pin goes “H” at Zero Detection (default)
1: DZF pin goes “L” at Zero Detection
Addr Register Name
03H Lch ATT
04H Rch ATT
Default
D7
ATT7
ATT7
1
D6
ATT6
ATT6
1
D5
ATT5
ATT5
1
D4
ATT4
ATT4
1
D3
ATT3
ATT3
1
D2
ATT2
ATT2
1
D1
ATT1
ATT1
1
D0
ATT0
ATT0
1
ATT7-0: Attenuation Level
256 levels, 0.5dB step
Data
FFH
FEH
FDH
:
:
02H
01H
00H
Attenuation
0dB
-0.5dB
-1.0dB
:
:
-126.5dB
-127.0dB
MUTE (-∞)
The transition between set values is a soft transition of 7425 levels. It takes 7424/fs (168ms@fs=44.1kHz) from
FFH (0dB) to 00H (MUTE). If the PDN pin goes to “L”, the ATTs are initialized to FFH. The ATT values are
FFH when RSTN = “0”. When RSTN return to “1”, the ATT values fade to their current value. This digital
attenuator is independent of the soft mute function.
MS1046-E-00
- 26 -
2009/01