CS42L51 查看數據表（PDF） - Cirrus Logic

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CS42L51

Low Power, Stereo CODEC with Headphone Amp

Cirrus Logic 

CS42L51

OFFTIME[2:0]

110

111

Function:

Off Time

Fs = 12, 24, 48 or

96 kHz

9.35 s

10.80 s

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

Figure 15 on page 36 for single-, multiple- and continuous-beep configurations using the REPEAT and

BEEP bits.

Beep Volume (BPVOL[4:0])

Default: 00000

Binary Code

00110

···

00000

11111

11110

···

00111

Function:

Volume Setting

+12.0 dB

···

0 dB

-2 dB

-4 dB

···

-50 dB

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 Figure 15 on page 36 for single-, multiple- and continuous-beep configurations using the REPEAT

and BEEP bits. Levels are decoded as described in the table above.

6.16 Beep Configuration & Tone Configuration (Address 14h)

7

REPEAT

6

BEEP

5

Reserved

4

3

2

TREB_CF1 TREB_CF0 BASS_CF1

1

BASS_CF0

0

TC_EN

Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.

Repeat Beep (REPEAT)

Default: 0

0 - Disabled

1 - Enabled

Function:

This bit is used in conjunction with the BEEP bit to mix a continuous or periodic beep with the analog output.

Refer to Figure 15 on page 36 for a description of each configuration option.

Beep (BEEP)

Default: 0

0 - Disabled

1 - Enabled

Function:

64

DS679F1

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