WM1811A datasheet(41/328 Pages) WOLFSON

tên linh kiện	WM1811A

Giải thích chi tiết về linh kiện	Multi-Channel Audio Hub CODEC for Smartphones

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Production Data

WM1811A

PD, November 2013, Rev 4.1

MICBIAS2 (eg. for a digital microphone supply), then the respective MICBIAS generator must be

configured in Bypass mode.

The MICBIAS configuration is illustrated in Figure 10.

Figure 10 MICBIAS Generator

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

(0001h)

Power

Managem

ent (1)

MICB2_ENA

Microphone Bias 2 Enable

0 = Disabled

1 = Enabled

MICB1_ENA

Microphone Bias 1 Enable

0 = Disabled

1 = Enabled

R61

(003Dh)

MICBIAS

MICB1_RATE

Microphone Bias 1 Rate

0 = Fast start-up / shut-down

1 = Pop-free start-up / shut-down

MICB1_MODE

Microphone Bias 1 Mode

0 = Regulator mode

1 = Bypass mode

3:1

MICB1_LVL [2:0]

100

Microphone Bias 1 Voltage Control

(when MICB1_MODE = 0)

000 = 1.5V

001 = 1.8V

010 = 1.9V

011 = 2.0V

100 = 2.2V

101 = 2.4V

110 = 2.5V

111 = 2.6V

MICB1_DISCH

Microphone Bias 1 Discharge

0 = MICBIAS1 floating when disabled

1 = MICBIAS1 discharged when disabled

R62

(003Eh)

MICBIAS

MICB2_RATE

Microphone Bias 2 Rate

0 = Fast start-up / shut-down

1 = Pop-free start-up / shut-down

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