9 beep off time & volume (address 13h), Beep off time & volume, P 46 – Cirrus Logic CS43L21 User Manual
Page 46: Cs43l21
46
DS723F1
CS43L21
6.8
Beep Frequency & Timing Configuration (Address 12h)
Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.
Beep Frequency (FREQ[3:0])
Default: 0000
Function:
The frequency of the beep signal can be adjusted from 260.87 Hz to 2181.82 Hz. Beep frequency will scale
directly with sample rate, Fs, but is fixed at the nominal Fs within each speed mode. Refer to
for single, multiple and continuous beep configurations using the REPEAT and BEEP bits.
Beep On Time Duration (ONTIME[3:0])
Default: 0000
Function:
The on-duration of the beep signal can be adjusted from approximately 86 ms to 5.2 s. The on-duration will
scale inversely with sample rate, Fs, but is fixed at the nominal Fs within each speed mode. Refer to
for single-, multiple- and continuous-beep configurations using the REPEAT and BEEP bits.
6.9
Beep Off Time & Volume (Address 13h)
7
6
5
4
3
2
1
0
FREQ3
FREQ2
FREQ1
FREQ0
ONTIME3
ONTIME2
ONTIME1
ONTIME0
FREQ[3:0]
Frequency
Fs = 12, 24, 48 or 96
kHz
Pitch
0000
260.87 Hz
C4
0001
521.74 Hz
C5
0010
585.37 Hz
D5
0011
666.67 Hz
E5
0100
705.88 Hz
F5
0101
774.19 Hz
G5
0110
888.89 Hz
A5
0111
1000.00 Hz
B5
1000
1043.48 Hz
C6
1001
1200.00 Hz
D6
1010
1333.33 Hz
E6
1011
1411.76 Hz
F6
1100
1600.00 Hz
G6
1101
1714.29 Hz
A6
1110
2000.00 Hz
B6
1111
2181.82 Hz
C7
TIME[3:0]
On Time
Fs = 12, 24, 48 or 96 kHz
0000
86 ms
···
···
1111
5.2 s
7
6
5
4
3
2
1
0
OFFTIME2
OFFTIME1
OFFTIME0
BPVOL4
BPVOL3
BPVOL2
BPVOL1
BPVOL0