[AK4634]
OFF Time of BEEP Generator [msec]
Step [msec]
BPOFF7-0 bit
fs = 48kHz
system
fs = 44.1kHz
system
fs = 48kHz
system
fs = 44.1kHz
system
(Note 34)
(Note 35)
(Note 34)
(Note 35)
0H
1H
2H
3H
4H
8.0
16.0
24.0
32.0
40.0
:
7.98
15.86
23.95
31.93
39.9
8.0
7.98
(default)
:
:
FDH
FEH
FFH
2032
2040
2048
2027.3
2035.3
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
1H
1
2
(default)
2H
3
3H
:
:
125
7DH
7EH
7FH
126
127
128
Table 43. Beep output Repeat Count
BPLVL3-0 bit
Beep Output Level
0dB
STEP
3dB
0H
1H
2H
3H
4H
5H
6H
7H
(default)
−3dB
−6dB
−9dB
−12dB
−18dB
−24dB
−30dB
6dB
Note 36. Power supply is 3.3V
Note 37. Beep output amplitude as 0dB setting is 4.4Vpp@ load resistance = 8Ω + 10µH, SVDD=3.3V
Table 44. Beep output level
Rev. 0.5
2007/10
- 55 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
