Cs43l21 – Cirrus Logic CS43L21 User Manual
Page 47
DS723F1
47
CS43L21
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
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
for single-, multiple- and continuous-beep configurations using the REPEAT and
BEEP bits.
Beep Volume (BPVOL[4:0])
Default: 00000
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
for single-, multiple- and continuous-beep configurations using the REPEAT
and BEEP bits. Levels are decoded as described in the table above.
OFFTIME[2:0]
Off Time
Fs = 12, 24, 48 or
96 kHz
000
1.23 s
001
2.58 s
010
3.90 s
011
5.20 s
100
6.60 s
101
8.05 s
110
9.35 s
111
10.80 s
Binary Code
Volume Setting
00110
+12.0 dB
···
···
00000
0 dB
11111
-2 dB
11110
-4 dB
···
···
00111
-50 dB