CS42L55 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42L55

Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

Cirrus Logic 

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6.16 Beep Frequency & On Time (Address 14h)

7

FREQ3

6

FREQ2

5

FREQ1

4

FREQ0

3

ONTIME3

2

ONTIME2

CS42L55

1

ONTIME1

0

ONTIME0

6.16.1 Beep Frequency

Sets the frequency of the beep signal.

FREQ[3:0]

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

Application:

Frequency (Fs = 12, 24 or 48 kHz)

254.76 Hz

509.51 Hz

571.65 Hz

651.04 Hz

689.34 Hz

756.04 Hz

869.45 Hz

976.56 Hz

1019.02 Hz

1171.88 Hz

1302.08 Hz

1378.67 Hz

1562.50 Hz

1674.11 Hz

1953.13 Hz

2130.68 Hz

“Beep Generator” on page 31

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.

DS773F1

53

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