WM8778 datasheet(44/50 Pages) WOLFSON

Nome de Peças	WM8778

Descrição Electrónicos	24 BIT 192KHZ STEREO CODEC

PDF	50 Pages

Scroll/Zoom	100%

Fabricante Electrônico	WOLFSON [Wolfson Microelectronics plc]

Página de início	http://www.wolfsonmicro.com

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44 / 50 page

WM8778

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PP Rev 1.7 June 2004

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

Maximum Attenuation of PGA

3:0

MAXATTEN

[3:0]

0110

Limiter

(attenuation below static)

0011 or lower: -3dB

0100: -4dB

…. (-1dB steps)

1100 or higher: -12dB

ALC

(lower PGA gain limit)

1010 or lower: -1dB

1011 : -5dB

….. (-4dB steps)

1110 : -17dB

1111 : -21dB

R20 (14h)

0010100

Limiter

Control

6:4

TRANWIN [2:0]

010

Length of Transient Window:

000: 0us (disabled)

001: 62.5us

010: 125us

…..

111: 4ms

MUTERA

Mute for Right Channel ADC:

0: Mute off

1: Mute on

MUTELA

Mute for Left Channel ADC:

0: Mute off

1: Mute on

R21 (15h)

0010101

ADC Mux

Control

LRBOTH

Right Channel Input PGA Controlled by Left Channel Register:

0 : Right channel uses RAG and MUTERA.

1 : Right channel uses LAG and MUTELA.

MXDAC

(DAC

playback)

VOUT Output Select DAC (see Figure 22)

R22 (16h)

0010110

Output Mux

MXBYP

(not selected)

VOUT Output Select Bypass Path.

R23 (17h)

0010111

Software

Reset

[8:0]

RESET

Not reset

Writing to this register will apply a reset to the device registers.

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