CS42L52(2006) 查看數據表（PDF） - Cirrus Logic

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CS42L52
(Rev.:2006)

Low Power, Stereo CODEC w/Headphone & Speaker Amps

Cirrus Logic 

CS42L52

6.21 Beep Frequency & On Time (Address 1Ch)

7

FREQ3

6

FREQ2

5

FREQ1

4

FREQ0

3

ONTIME3

2

ONTIME2

1

ONTIME1

0

ONTIME0

6.21.1 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, 48 or 96 kHz)

260.87 Hz

521.74 Hz

585.37 Hz

666.67 Hz

705.88 Hz

774.19 Hz

888.89 Hz

1000.00 Hz

1043.48 Hz

1200.00 Hz

1333.33 Hz

1411.76 Hz

1600.00 Hz

1714.29 Hz

2000.00 Hz

2181.82 Hz

“Beep Generator” on page 30

Pitch

C4

C5

D5

E5

F5

G5

A5

B5

C6

D6

E6

F6

G6

A6

B6

C7

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.

DS680A1

59

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