Cirrus Logic CS42L52 - Manual (Page 59)

DS680F2 59
CS42L52
3/1/13
6.21 Beep Frequency and On Time (Address 1Ch)
6.21.1 Beep Frequency
Sets the frequency of the beep signal.
Notes:
1. This setting must not change when BEEP is enabled.
2. Beep frequency will scale directly with sample rate, Fs, but is fixed at the nominal Fs within each
speed mode.
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
Application: “Beep Generator” on page 29