ak4620b AKM Semiconductor, Inc., ak4620b Datasheet - Page 22

• Manufacturer Part Number: ak4620b
• Description: 24-bit 192khz Audio Codec With Ipga
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
2. DSD Mode
In DSD mode, DIF0-2 is ignored. The frequency of DCLK is fixed at 64fs. The DCKB bit inverts the polarity of DCLK.
Caution: In DSD mode, the signal level ranges from 25% to 75%. Peak levels of DSD signal above this range are not
MS0401-E-00
D/A conversion mode switching timing
D/A Data
D/A Data
RSTDA bit
D/A Mode
RSTDA bit
D/A Mode
recommended by the SACD format book (Scarlet Book).
DCLK (64fs)
DCLK (64fs)
DSDL,DSDR
DSDL,DSDR
DCKB=1
DCKB=0
Normal
Phase Modulation
PCM Data
Figure 9. D/A Mode Switching Mode Timing (DSD to PCM)
Figure 8. D/A Mode Switching Timing (PCM to DSD)
D0
D0
PCM Mode
DSD Data
Figure 7. DSD Mode Timing
DSD Mode
≥4/fs
D1
D1
- 22 -
≥4/fs
D1
D2
DSD Data
≥0
D2
D2
DSD Mode
PCM Mode
PCM Data
D3
D3
[AK4620B]
2005/07