AK4342 Datasheet, PDF (26/43 Pages) Asahi Kasei Microsystems – 24-Bit Stereo DAC with HP-AMP & 2V Line-Out

ASAHI KASEI
[AK4342]
„ Transition Time
Changing volume level, power-up/down and switching signal path don’t have any pop noise. The following registers
have a transition time shown in Table 13 and Table 15. It depends the sampling frequency (FS3-0 bits) and the setting of
PUT1-0 bits and PTS1-0 bits. It is necessary to take the interval time when the register is changed continually. The
interval time depends on the transition time. The setting of transition time should not be changed during transition.
Address
Register Name
PUT1-0 bit
00H
PMHP, PMLO
Table 12. Registers with transition time (PUT1-0 bits)
PUT1 bit
0
0
1
1
PUT0 bit Sampling Frequency (FS3-0 bits)
8k / 16k / 32k / 64kHz
0
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
1
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
0
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
1
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
Table 13. Transition Time (PUT1-0 bits)
Transition Time
32ms
34.8ms
32ms
64ms
69.7ms
64ms
128ms
139ms
128ms
256ms
278ms
256ms
Default
Address
Register Name
01H
AMUTE
04H
PTS1-0 bit
05H
HMUTEL, PGAL4-0
HMUTER, PGAR4-0
06H
RINR, RINL, LINR, LINL, DACLR
07H
LMUTE, LPGA4-0
Table 14. Registers with transition time (PTS1-0 bits)
PTS1 bit
0
0
1
1
PTS0 bit Sampling Frequency (FS3-0 bits)
8k / 16k / 32k / 64kHz
0
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
1
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
0
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
8k / 16k / 32k / 64kHz
1
11.025k / 22.05k / 44.1k/ 88.2kHz
12k / 24k / 48k / 96kHz
Table 15. Transition Time (PTS1-0 bits)
Transition Time
16ms
17.4ms
16ms
32ms
34.8ms
32ms
64ms
69.7ms
64ms
128ms
139ms
128ms
Default
MS0506-E-02
- 26 -
2006/07