WM8993 datasheet(155/229 Pages) WOLFSON

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Production Data

WM8993

PD, November 2010, Rev 4.0

155

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

MICB2_ENA

Microphone Bias 2 Enable

0 = OFF (high impedance output)

1 = ON

MICB1_ENA

Microphone Bias 1 Enable

0 = OFF (high impedance output)

1 = ON

2:1

VMID_SEL

[1:0]

00b

VMID Divider Enable and Select

00 = VMID disabled (for OFF mode)

01 = 2 x 40k

Ω divider (Normal mode)

10 = 2 x 240k

Ω divider (Standby mode)

11 = Reserved

BIAS_ENA

Enables the Normal bias current

generator (for all analogue functions)

0 = Disabled

1 = Enabled

R2 (02h)

Power

Management

(2)

TSHUT_ENA

Thermal Sensor Enable

0 = Disabled

1 = Enabled

TSHUT_OPDIS

Thermal Shutdown Control

(Causes audio outputs to be disabled if

an over-temperature occurs. The thermal

sensor must also be enabled.)

0 = Disabled

1 = Enabled

OPCLK_ENA

GPIO Clock Output Enable

0 = Disabled

1 = Enabled

MIXINL_ENA

Left Input Mixer Enable

(Enables MIXINL and RXVOICE input to

MIXINL)

0 = Disabled

1 = Enabled

MIXINR_ENA

Right Input Mixer Enable

(Enables MIXINR and RXVOICE input to

MIXINR)

0 = Disabled

1 = Enabled

IN2L_ENA

IN2L Input PGA Enable

0 = Disabled

1 = Enabled

IN1L_ENA

IN1L Input PGA Enable

0 = Disabled

1 = Enabled

IN2R_ENA

IN2R Input PGA Enable

0 = Disabled

1 = Enabled

IN1R_ENA

IN1R Input PGA Enable

0 = Disabled

1 = Enabled

ADCL_ENA

Left ADC Enable

0 = ADC disabled

1 = ADC enabled

ADCR_ENA

Right ADC Enable

0 = ADC disabled

1 = ADC enabled

WM8993 Datasheet(PDF) 155 Page - Wolfson Microelectronics plc

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