AK4396VF AKM [Asahi Kasei Microsystems], AK4396VF Datasheet - Page 23

• Manufacturer Part Number: AK4396VF
• Description: Advanced Multi-Bit 192kHz 24-Bit ?? DAC
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
Caution: In DSD mode, the signal level is ranging from 25% to 75%. Peak levels of DSD signal above this duty are not
A digital de-emphasis filter is available for 32kHz, 44.1kHz or 48kHz sampling rates (tc = 50/15µs) and is enabled or
disabled with DEM1-0 pins or DEM1-0 bits. In case of double speed and quad speed mode, the digital de-emphasis filter
is always off. When DSD mode, DEM1-0 bits are ignored. The setting value is held even if PCM mode and DSD mode
are switched.
The AK4396 includes channel independent digital output volumes (ATT) with 256 levels at linear step including MUTE.
These volumes are in front of the DAC and can attenuate the input data from 0dB to –48dB and mute. When changing
levels, transitions are executed via soft changes; thus no switching noise occurs during these transitions. The transition
time of 1 level and all 256 levels is shown in Table 13.
MS0336-E-00
D/A conversion mode switching timing
De-emphasis Filter
Output Volume
D/A Data
D/A Data
RSTN bit
D/A Mode
RSTN bit
D/A Mode
recommended by SACD format book (Scarlet Book).
PCM Data
Normal Speed Mode
Double Speed Mode
Figure 6. D/A Mode Switching Timing (PCM to DSD)
Figure 7. D/A Mode Switching Timing (DSD to PCM)
Quad Speed Mode
Table 12. De-emphasis Control (Normal Speed Mode)
Sampling Speed
DEM1
PCM Mode
0
0
1
1
DSD Data
Table 13. ATT Transition Time
DSD Mode
≥4/fs
DEM0
1
0
0
1
- 23 -
≥4/fs
16LRCK
4LRCK
8LRCK
1 Level
44.1kHz
48kHz
32kHz
Transition Time
Mode
OFF
Default
1020LRCK
2040LRCK
4080LRCK
DSD Data
255 to 0
≥0
DSD Mode
PCM Mode
PCM Data
[AK4396]
2004/08