WM8993 datasheet(197/229 Pages) WOLFSON

197 / 229 page

Production Data

WM8993

PD, November 2010, Rev 4.0

197

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R57 (39h)

AntiPOP2

6:5

VMID_RAMP

[1:0]

VMID soft start enable / slew rate control

00 = Normal / Slow start

01 = Normal / Fast start

10 = Soft / Slow start

11 = Soft / Fast soft start

VMID_BUF_EN

VMID Buffer Enable

0 = Disabled

1 = Enabled

STARTUP_BIA

S_ENA

Enables the Start-Up bias current generator

0 = Disabled

1 = Enabled

BIAS_SRC

Selects the bias current source

0 = Normal bias

1 = Start-Up bias

VMID_DISCH

Connects VMID to ground

0 = Disabled

1 = Enabled

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R58 (3Ah)

MICBIAS

7:6

JD_SCTHR

[1:0]

Jack Detect (MICBIAS) Short Circuit threshold

00 = 300uA

01 = 600uA

10 = 1200uA

11 = 2400uA

These values are for AVDD1=3.0V and scale

proportionally with AVDD1.

5:3

JD_THR [2:0]

000

Jack Detect (MICBIAS) Current Detect threshold

00 = 150uA

01 = 300uA

10 = 600uA

11 = 1200uA

These values are for AVDD1=3.0V and scale

proportionally with AVDD1.

JD_ENA

Jack Detect (MICBIAS) function enable

0 = disabled

1 = enabled

MICB2_LVL

Microphone Bias 2 Voltage Control

0 = 0.9 * AVDD1

1 = 0.65 * AVDD1

MICB1_LVL

Microphone Bias 1 Voltage Control

0 = 0.9 * AVDD1

1 = 0.65 * AVDD1

WM8993 Datasheet(PDF) 197 Page - Wolfson Microelectronics plc

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