AK4367 Datasheet, PDF (31/38 Pages) Asahi Kasei Microsystems – OUTPUT MIXER & HP - AMP 24 BIT 2 CH DAC

ASAHI KASEI
[AK4367]
Addr
03H
Register Name
Mode Control 2
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
ATS DATTC BCKP LRP
RD
RD
RD
RD
R/W R/W R/W R/W
0
0
0
0
0
0
0
0
LRP: LRCK Polarity Select
0: Normal (Default)
1: Invert
BCKP: BICK Polarity Select
0: Normal (Default)
1: Invert
DATTC: DAC Digital Attenuator Control Mode Select
0: Independent (Default)
1: Dependent
At DATTC bit = “1”, ATTL7-0 bits control both Lch and Rch attenuation level, while register values of
ATTL7-0 bits are not written to ATTR7-0 bits. At DATTC bit = “0”, ATTL7-0 bits control Lch level and
ATTR7-0 bits control Rch level.
ATS: Digital attenuator transition time setting (Table 5)
0: 1061/fs (Default)
1: 7424/fs
Addr
04H
05H
Register Name
DAC Lch ATT
DAC Rch ATT
R/W
Default
D7
ATTL7
ATTR7
R/W
0
D6
ATTL6
ATTR6
R/W
0
D5
ATTL5
ATTR5
R/W
0
D4
ATTL4
ATTR4
R/W
0
D3
ATTL3
ATTR3
R/W
0
D2
ATTL2
ATTR2
R/W
0
D1
ATTL1
ATTR1
R/W
0
D0
ATTL0
ATTR0
R/W
0
ATTL7-0: Setting of the attenuation value of output signal from DACL (Table 4)
ATTR7-0: Setting of the attenuation value of output signal from DACR (Table 4)
Default: “00H” (MUTE)
The AK4367 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.
MS0247-E-01
- 31 -
2004/11