AK4495SEQ Datasheet, PDF (46/58 Pages) Asahi Kasei Microsystems – Quality-oriented Premium 32-Bit 2ch DAC

[AK4495S]
Addr Register Name
01H Control 2
Default
D7
D6
D5
DZFE DZFM
SD
0
0
1
D4
DFS1
0
D3
DFS0
0
D2
DEM1
0
D1
DEM0
1
D0
SMUTE
0
SMUTE: Soft Mute Enable
0: Normal Operation (default)
1: DAC outputs soft-muted.
DEM1-0: De-emphasis Response
初期値は“01” (OFF)です。
DFS1-0: Sampling Speed Control (Table 9)
初期値は“000” (Normal Speed)です。DFS2-0 bitを切り替えた場合、クリックノイズが発生し
ます。
DFS2
0
0
0
0
1
1
1
1
DFS1
0
0
1
1
0
0
1
1
DFS0
Sampling Rate (fs)
0
Normal Speed Mode 30kHz  54kHz (default)
1
Double Speed Mode 54kHz  108kHz
0
Quad Speed Mode
120kHz 
216kHz
1
Reserved
-
0
Oct Speed Mode
384kHz
1
Hexa Speed Mode
768kHz
0
Reserved
-
1
Reserved
-
Table 9. Sampling Speed (Manual Setting Mode @Serial Mode)
SD: Minimum delay Filter Enable
0: Traditional filter
1: Short delay filter (default)
SD
SLOW
Mode
0
0
Sharp roll-off filter
0
1
Slow roll-off filter
1
0
Short delay sharp roll off
filter
(default)
1
1
Short delay slow roll off filter
Table 14. Digital Filter Setting
DZFM:
Data Zero Detect Mode
0: Channel Separated Mode (default)
1: Channel ANDed Mode
DZFM bitを“1”にすると両チャネルの入力データが8192回連続して“0”の場合のみ、両チャ
ネルのDZF pinが“H”になります。
DZFE:
Data Zero Detect Enable
0: Disable (default)
1: Enable
Zero detect function can be disabled by DZFE bit “0”. In this case, the DZF pins of both channels are
always “L”.
MS1560-J-01
- 46 -
2013/11