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AK4634 Datasheet, PDF (55/77 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP | |||
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[AK4634]
OFF Time of BEEP Generator [msec]
Step [msec]
BPOFF7-0 bit
fs = 48kHz
fs = 44.1kHz fs = 48kHz fs = 44.1kHz
system
system
system
system
(Note 34)
(Note 35)
(Note 34) (Note 35)
0H
8.0
7.98
8.0
7.98
(default)
1H
16.0
15.86
2H
24.0
23.95
3H
32.0
31.93
4H
40.0
39.9
:
:
:
FDH
2032
2027.3
FEH
2040
2035.3
FFH
2048
2043.4
Note 34. Sampling frequency is 8kHz, 16kHz, 32kHz or 48kHz.
Note 35. Sampling frequency is 11.025kHz, 22.05kHz or 44.1kHz.
Table 42. Beep output OFF-time (PLL Master/Slave Mode reference clock: MCKI)
BPTM6-0 bit
Repeat Count
0H
1
(default)
1H
2
2H
3
3H
:
:
125
7DH
126
7EH
127
7FH
128
Table 43. Beep output Repeat Count
BPLVL3-0 bit
Beep Output Level
STEP
0H
0dB
(default)
1H
â3dB
2H
â6dB
3dB
3H
â9dB
4H
â12dB
5H
â18dB
6H
â24dB
6dB
7H
â30dB
Note 36. Power supply is 3.3V
Note 37. Beep output amplitude as 0dB setting is 4.4Vpp@ load resistance = 8⦠+ 10µH, SVDD=3.3V
Table 44. Beep output level
Rev. 0.5
- 55 -
2007/10
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