AK4358 Datasheet, PDF (19/35 Pages) Asahi Kasei Microsystems – 192 KHZ 24 BIT 8 CH DAC WITH DSD INPUT

ASAHI KASEI
[AK4358]
2) DSD Mode
In case of DSD mode, DIF0-2 is ignored. The frequency of DCLK is fixed to 64fs. DCKB bit can invert the polarity of
DCLK.
DCLK (64fs)
DCKB=1
DCLK (64fs)
DCKB=0
DSDL,DSDR
D0
D1
Normal
D2
D3
DSDL,DSDR
Phase Modulation ^D0
D1
D1
D2
D2
D3
Figure 11. DSD Mode Timing
„ D/A conversion mode switching timing
RSTN bit
D/A Mode
D/A Data
PCM Mode
PCM Data
≥4/fs
DSD Mode
≥0
DSD Data
Figure 12. D/A Mode Switching Timing (PCM to DSD)
RSTN bit
D/A Mode
D/A Data
DSD Mode
≥4/fs
DSD Data
PCM Mode
PCM Data
Figure 13. D/A Mode Switching Mode Timing (DSD to PCM)
Caution: In DSD mode, the signal level is ranging from 25% to 75%. Peak levels of DSD signal above this duty are not
recommended by SACD format book (Scarlet Book).
MS0203-E-00
- 19 -
2003/02