AK4392 Datasheet, PDF (34/41 Pages) Asahi Kasei Microsystems – High Performance 120dB Premium 32-Bit DAC

[AK4392]
Addr Register Name
02H Control 3
Default
D7
D6
D5
D4
D3
D2
D1
D0
DP
0
DCKS DCKB MONO DZFB SELLR
0
0
0
0
0
0
0
0
0
SELLR: The data selection of L channel and R channel, when MONO mode
0: All channel output R channel data, when MONO mode. (default)
1: All channel output L channel data, when MONO mode.
It is enabled when MONO bit is “1”, and outputs Rch date to both channels when “0”,outputs Lch data to
both channels when “1”.
DZFB: Inverting Enable of DZF
0: DZF pin goes “H” at Zero Detection (default)
1: DZF pin goes “L” at Zero Detection
MONO: MONO mode Stereo mode select
0: Stereo mode (default)
1: MONO mode
When MONO bit is “1”, MONO mode is enabled.
DCKB: Polarity of DCLK (DSD Only)
0: DSD data is output from DCLK falling edge. (default)
1: DSD data is output from DCLK rising edge.
DCKS: Master Clock Frequency Select at DSD mode (DSD only)
0: 512fs (default)
1: 768fs
DP: DSD/PCM Mode Select
0: PCM Mode (default)
1: DSD Mode
When D/P bit is changed, the AK4392 should be reset by RSTN bit.
Addr Register Name
03H Lch ATT
04H Rch ATT
Default
D7
ATT7
ATT7
1
D6
ATT6
ATT6
1
D5
ATT5
ATT5
1
D4
ATT4
ATT4
1
D3
ATT3
ATT3
1
D2
ATT2
ATT2
1
D1
ATT1
ATT1
1
D0
ATT0
ATT0
1
ATT7-0: Attenuation Level
256 levels, 0.5dB step
Data
FFH
FEH
FDH
:
:
02H
01H
00H
Attenuation
0dB
-0.5dB
-1.0dB
:
:
-126.5dB
-127.0dB
MUTE (-∞)
The transition between set values is soft transition of 7425 levels. It takes 7424/fs (168ms@fs=44.1kHz) from
FFH (0dB) to 00H (MUTE). If the PDN pin goes to “L”, the ATTs are initialized to FFH. The ATTs are FFH
when RSTN bit= “0”. When RSTN return to “1”, the ATTs fade to their current value. This digital attenuator is
independent of soft mute function.
MS1045-E-02
- 34 -
2009/04