AK4566 Datasheet, PDF (33/45 Pages) Asahi Kasei Microsystems – 20bit Stereo CODEC with built-in IPGA & HP-AMP

ASAHI KASEI
AKM CONFIDENTIAL
[AK4566]
Addr Register Name
06H Mode Control
Default
D7
D6
D5
MCKAC MCKPD
0
0
0
0
D4
D3
D2
D1
D0
ATS HPM DIF1 DIF0 DFS
0
0
1
0
0
DFS: Sampling Speed Mode Select (Table 2)
DIF1-0: Audio Data Interface Format
Default: “10” (Mode 2)
HPM: Mono Output Select of Headphone
0: Normal Operation (Default)
1: Mono. (L+R)/2 signal from DAC is output to Lch and Rch of headphone.
Setting of HPM bit is enabled only at DACL=DACR= “1”.
DACL
0
1
HPM
x
0
1
HPL pin Output
No output from DAC
Output from Lch of DAC
Output (L+R)/2 from DAC
Default
Table 14. Mono Output Select of Headphone
(Note. Rch is same.)
ATS: Digital attenuator transition time setting (Table 15)
ATS
ATT speed
0dB to MUTE
1 step
0
1061/fs
4/fs
1
7424/fs
29/fs
Default
Table 15. Transition time between set values of ATT7-0 bits
MCKPD: MCLK Input Buffer Control
0: Enable (Default)
1: Disable
When MCLK input with AC coupling is stopped, MCKPD bit should be set to “1”.
MCKAC: MCLK Input Mode Select
0: CMOS input (Default)
1: AC coupling input
REV 0.5
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