WM8960CGEFL/V 데이터 시트보기 (PDF) - Cirrus Logic

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WM8960CGEFL/V

Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

Cirrus Logic 

Production Data

WM8960

REGISTER

ADDRESS

R21 (15h)

Left ADC

Digital Volume

BIT

7:0

LABEL

LADCVOL

[7:0]

8

ADCVU

R22 (16h)

7:0

Right ADC

Digital Volume

RADCVOL

[7:0]

8

ADCVU

Table 10 ADC Digital Volume Control

DEFAULT

DESCRIPTION

11000011

( 0dB )

0

11000011

( 0dB )

0

Left ADC Digital Volume Control

0000 0000 = Digital Mute

0000 0001 = -97dB

0000 0010 = -96.5dB

... 0.5dB steps up to

1111 1111 = +30dB

ADC Volume Update

0 = Store LADCVOL in intermediate

latch (no gain change)

1 = Update left and right channel

gains (left = LADCVOL, right =

intermediate latch)

Right ADC Digital Volume Control

0000 0000 = Digital Mute

0000 0001 = -97dB

0000 0010 = -96.5dB

... 0.5dB steps up to

1111 1111 = +30dB

ADC Volume Update

0 = Store RADCVOL in intermediate

latch (no gain change)

1 = Update left and right channel

gains (left = intermediate latch, right

= RADCVOL)

ADC DIGITAL FILTERS

The ADC filters perform true 24-bit signal processing to convert the raw multi-bit oversampled data

from the ADC to the correct sampling frequency to be output on the digital audio interface.

HIGH PASS FILTER

A digital high pass filter is applied by default to the ADC path to remove DC offsets. This filter can be

disabled using the ADCHPD register bit.

REGISTER

ADDRESS

R5 (05h)

ADC and DAC

Control (1)

BIT

0

LABEL

ADCHPD

Table 11 ADC High Pass Filter

DEFAULT

DESCRIPTION

0

ADC High Pass Filter Disable

0 = Enable high pass filter on left and

right channels

1 = Disable high pass filter on left and

right channels

The high pass filter characteristics are shown in the Digital Filter Characteristics section.

w

PD, August 2013, Rev 4.2

27

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