ak4395 AKM Semiconductor, Inc., ak4395 Datasheet - Page 20

• Manufacturer Part Number: ak4395
• Description: Advanced Multi-bit 192khz 24-bit ?? Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0040-E-01
Addr
Addr
02H
03H
04H
SLOW: Slow Roll-off Filter Enable
DZFE: Data Zero Detect Enable
DZFM: Data Zero Detect Mode
DZFB: Inverting Enable of DZF
ATT7-0: Attenuation Level
GA1-0: Output Gain Control
FFH (0dB) to 00H (MUTE). If PDN pin goes to “L”, the ATTs are initialized to FFH. The ATTs are FFH when
RSTN = “0”. When RSTN return to “1”, the ATTs fade to their current value. This digital attenuator is
independent of soft mute function.
Output Gain
AOUTL ATT Control
AOUTR ATT Control
The transition between set values is soft transition of 7425 levels. It takes 7424/fs (168ms@fs=44.1kHz) from
default
default
Register Name
Register Name
256 levels, 0.5dB step
Data
FFH
FEH
FDH
02H
01H
00H
:
:
0: Sharp Roll-off Filter
1: Slow Roll-off Filter
0: Disable
1: Enable
Zero detect function can be disabled by DZFE bit “0”. In this case, the DZF pins of all channels are
always “L”.
0: Channel Separated Mode
1: Channel ANDed Mode
If the DZFM bit is set to “1”, the DZF pins of all channels go to “H” only when the input data at all
channels are continuously zeros for 8192 LRCK cycles.
0: DZF goes “H” at Zero Detection
1: DZF goes “L” at Zero Detection
00: -1.16dB
01: -2.18dB
10: +1.34dB
11: 0dB
Attenuation
-0.5dB
-1.0dB
-126.5dB
-127.0dB
MUTE (- )
0dB
:
:
ATT7
ATT7
GA1
D7
D7
1
1
ATT6
ATT6
GA0
D6
D6
1
1
- 20 -
ATT5
ATT5
D5
D5
0
0
1
ATT4
ATT4
D4
D4
0
0
1
ATT3
ATT3
D3
D3
0
0
1
DZFB
ATT2
ATT2
D2
D2
0
1
ATT1
ATT1
D1
D1
0
0
1
[AK4395]
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ATT0
ATT0
D0
D0
0
0
1