ak4566vn AKM Semiconductor, Inc., ak4566vn Datasheet - Page 37

• Manufacturer Part Number: ak4566vn
• Description: 20bit Stereo Codec With Built-in Ipga & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
REV 0.5
Addr
0AH
Addr
0BH
0CH
ATTL7-0: Setting of the attenuation value of output signal from DACL
ATTR7-0: Setting of the attenuation value of output signal from DACR
ATTM3-0: Analog volume control for MOUT
MMUTE: Mute control for MOUT
Register Name
DAC Lch ATT
DAC Rch ATT
Register Name
MOUT ATT
The AK4566 has channel-independent digital attenuator (256 levels, 0.5dB step). This digital attenuator is
placed before D/A converter. ATTL/R7-0 bits set the attenuation level (0dB to -127dB or MUTE) of each
channel. Digital attenuator is independent of soft mute function.
Default
Default
0: Normal operation. Attenuation value is controlled by ATTM3-0 bits.
1: Mute. ATTM3-0 bits are ignored. (Default)
MMUTE
0
1
ATTR7
ATTL7
ATTL/R7-0
D7
D7
0
0
0
Table 20. MOUT Volume ATT values
Table 19. Digital Volume ATT values
FEH
FDH
FCH
FFH
02H
01H
00H
:
:
AKM CONFIDENTIAL
ATTR6
ATTL6
ATTM3-0
D6
D6
0DH
0CH
0
0
0
0FH
0EH
01H
00H
x
:
:
MUTE (
Attenuation
ATTR5
ATTL5
- 37 -
126.5dB
127.0dB
D5
D5
0.5dB
1.0dB
1.5dB
0dB
0
0
0
:
:
Attenuation
MUTE
)
ATTR4
ATTL4
MMUTE
0dB
28dB
30dB
2dB
4dB
6dB
D4
D4
:
:
0
1
Default
ATTL3
ATTR3
ATTM3
D3
D3
0
0
Default
ATTL2
ATTR2
ATTM2
D2
D2
0
0
ATTL1
ATTR1
ATTM1
D1
D1
0
0
[AK4566]
ATTL0
ATTR0
ATTM0
2002/2
D0
D0
0
0