CS43L21 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS43L21' PDF : 63 Pages View PDF
CS43L21
6.9 Beep Off Time & Volume (Address 13h)
7
OFFTIME2
6
OFFTIME1
5
OFFTIME0
4
BPVOL4
3
BPVOL3
2
BPVOL2
1
BPVOL1
0
BPVOL0
Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.
Beep Off Time (OFFTIME[2:0])
Default: 000
OFFTIME[2:0]
000
001
010
011
100
101
110
111
Off Time
Fs = 12, 24, 48 or
96 kHz
1.23 s
2.58 s
3.90 s
5.20 s
6.60 s
8.05 s
9.35 s
10.80 s
Function:
The off-duration of the beep signal can be adjusted from approximately 75 ms to 680 ms. The off-duration
will scale inversely with sample rate, Fs, but is fixed at the nominal Fs within each speed mode. Refer to
Figure 10 on page 26 for single-, multiple- and continuous-beep configurations using the REPEAT and
BEEP bits.
Beep Volume (BPVOL[4:0])
Default: 00000
Binary Code
00110
···
00000
11111
11110
···
00111
Volume Setting
+12.0 dB
···
0 dB
-2 dB
-4 dB
···
-50 dB
Function:
The level of the beep into the output mixer can be adjusted in 2.0 dB increments from +12 dB to -50 dB.
Refer to Figure 10 on page 26 for single-, multiple- and continuous-beep configurations using the REPEAT
and BEEP bits. Levels are decoded as described in the table above.
46
DS723A1
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