Cirrus Logic CS42L51 - Manual (Page 63)

DS679F1 63
CS42L51
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
Figure 15 on
page 36 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
Figure
15 on page 36 for single-, multiple- and continuous-beep configurations using the REPEAT and BEEP bits.
6.15 Beep Off Time & Volume (Address 13h)
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
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
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
FREQ[3:0] Frequency
Fs = 12, 24, 48 or 96
kHz
Pitch