WM8956 Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

Número de pieza

componentes Descripción

Fabricante

WM8956

Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers

Wolfson Microelectronics plc 

WM8956

REGISTER BIT

ADDRESS

4

3

2

1:0

R48 (30h) 8

Additional 7

Control (4)

6:4

3:2

1

0

R49 (31h) 8

Class D

7:6

Control (1)

5:0

R50 (32h) 8:0

R51 (33h) 8:6

Class D

5:3

Control (2)

LABEL

RMIC

LOMIX

ROMIX

GPIOPOL

GPIOSEL[2:0]

HPSEL[1:0]

TSENSEN

MBSEL

SPK_OP_EN[1:0]

DCGAIN[2:0]

DEFAULT

DESCRIPTION

0

0

0

00

0

0

000

00

1

0

0

00

110111

001001101

010

000

Right Channel Input PGA Enable

0 = PGA disabled

1 = PGA enabled (if AINR = 1)

Left Output Mixer Enable Control

0 = Disabled

1 = Enabled

Right Output Mixer Enable Control

0 = Disabled

1 = Enabled

Reserved

Reserved

GPIO Polarity Invert

0 = Non inverted

1 = Inverted

GPIO1 GPIO Function Select:

000 = Jack detect input

001 = Reserved

010 = Temperature ok

011 = Debounced jack detect output

100 = SYSCLK output

101 = PLL lock

110 = Logic 0

111 = Logic 1

Headphone Switch Input Select

0X = GPIO1 used for jack detect input (Requires

pin to be configured as a GPIO using

ALRCGPIO)

10 = JD2 used for jack detect input

11 = JD3 used for jack detect input

Temperature Sensor Enable

0 = Temperature sensor disabled

1 = Temperature sensor enabled

Microphone Bias Voltage Control

0 = 0.9 * AVDD

1 = 0.65 * AVDD

Reserved

Enable Class D Speaker Outputs

00 = Off

01 = Left speaker only

10 = Right speaker only

11 = Left and right speakers enabled

Reserved

Reserved

Reserved

DC Speaker Boost (Boosts speaker DC output

level by up to 1.8 x on left and right channels)

000 = 1.00x boost (+0dB)

001 = 1.27x boost (+2.1dB)

010 = 1.40x boost (+2.9dB)

011 = 1.52x boost (+3.6dB)

100 = 1.67x boost (+4.5dB)

101 = 1.8x boost (+5.1dB)

110 to 111 = Reserved

Production Data

REFER TO

Input Signal

Path

Output Signal

Path

Output Signal

Path

General

Purpose Input /

Output

General

Purpose Input /

Output

Headphone Jack

Detect

Thermal

Shutdown

Input Signal

Path

Enabling the

Outputs

Analogue

Outputs

w

PD, November 2011, Rev 4.1

70

Share Link: