WM8775EDSSLASHR datasheet(31/36 Pages) WOLFSON

номер детали	WM8775EDS/R

подробное описание детали	24 BIT 96 KHZ ADC WITH 4 CHANNEL I/P MULTIPLEXER

PDF	36 Pages

Scroll/Zoom	100%

производитель	WOLFSON [Wolfson Microelectronics plc]

домашняя страница	http://www.wolfsonmicro.com

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WM8775

PP Rev 1.8, June 2004

NGAT

Noise gate enable (ALC only)

0 : disabled

1 : enabled

R19 (13h)

0010011

Noise Gate

Control

4:2

NGTH

000

Noise gate threshold

000: -78dBFS

001: -72dBfs

… 6 dB steps

110: -42dBFS

111: -36dBFS

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

3:0

AMX[3:0]

0001

ADC left channel input mixer control bits

AMX[3:0]

ADC LEFT IN

ADC RIGHT IN

0001

AIN1L

AIN1R

0010

AIN2L

0100

AIN3L

AIN3R

1000

AIN4L

AIN4R

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 Mixer

Control

LRBOTH

Setting LRBOTH will write the same gain value to RAG[7:0] and

LAG[7:0].

R23 (17h)

0010111

Software

Reset

[8:0]

RESET

Not reset

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

Table 13 Register Map Description

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