CS42L51 查看數據表（PDF） - Cirrus Logic

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CS42L51

Low Power, Stereo CODEC with Headphone Amp

Cirrus Logic 

CS42L51

Function:

The level of the shelving treble gain filter is set by Treble Gain Level. The level can be adjusted in 1.5 dB

increments from +12.0 to -10.5 dB.

Bass Gain Level (BASS[3:0])

Default: 1000 dB (No Bass Gain)

Binary Code

0000

···

0111

1000

1001

···

1111

Function:

Gain Setting

+12.0 dB

···

+1.5 dB

0 dB

-1.5 dB

···

-10.5 dB

The level of the shelving bass gain filter is set by Bass Gain Level. The level can be adjusted in 1.5 dB in-

crements from +10.5 to -10.5 dB.

6.18 AOUTx Volume Control:

AOUTA (Address 16h) & AOUTB (Address 17h)

7

6

5

4

3

2

1

0

AOUTx_VOL7 AOUTx_VOL6 AOUTx_VOL5 AOUTx_VOL4 AOUTx_VOL3 AOUTx_VOL2 AOUTx_VOL1 AOUTx_VOL0

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

AOUTX Volume Control (AOUTX_VOL[7:0])

Default = 00h

Binary Code

0001 1000

···

0000 0000

1111 1111

1111 1110

···

0011 0100

···

0001 1001

Function:

Volume Setting

+12.0 dB

···

0 dB

-0.5 dB

-1.0 dB

···

-102 dB

···

-102 dB

The analog output levels can be adjusted in 0.5 dB increments from +12 to -102 dB as dictated by the DAC

Soft and Zero Cross bits (DACX_SZC[1:0]). Levels are decoded in unsigned binary as described in the table

above.

Note: When the limiter is enabled, the AOUT Volume is automatically controlled and should not be ad-

justed manually. Alternative volume control may be achieved using the PCMMIXx_VOL[6:0] bits.

66

DS679F1

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