WM8351 datasheet(279/330 Pages) WOLFSON

279 / 330 page

Production Data

WM8351

PD, April 2012, Rev 4.5

279

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

10:8

AUXADC_CRATE[2:0]

000

AUXADC measurement frequency in

Continuous mode

000 = 1Hz

001 = 4Hz

010 = 8Hz

011 = 16Hz

100 = 32Hz

101 = 64Hz

110 = 128Hz

111 = 256Hz

Reset by state machine.

AUXADC_CAL

Configure AUX3 input to be the VREF supply

for AUXADC calibration.

0 = AUX3 input connected to AUX3 pin

1 = AUX3 input connected to unbuffered

VREF

Reset by state machine.

AUXADC_RBMODE

Enable for AUXADC bandgap (VREF) buffer.

0 = AUXADC REFBUF is only enabled

during conversions that use the VREF as a

reference

1 = AUXADC REFBUF is always enabled

when the AUXADC is enabled

Reset by state machine.

AUXADC_WAIT

Whether the old data must be read before

new conversions can be made

0 = No effect (new conversions overwrite

old)

1 = New conversions are held back (and

measurements delayed) until AUX_DATAn

has been read.

Reset by state machine.

Digitiser Control (2)

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R152 (98h)

AUX1

Readback

14:13

AUXADC_SCALE1[1:0]

AUX1 input select:

00 = Off

01 = Input divided by 1

10 = Input divided by 2

11 = Input divided by 4

AUXADC_REF1

AUX1 reference select

0 = AUX1 measured relative to VRTC

1 = AUX1 measured relative to VREF

11:0

AUXADC_DATA1[11:0] 0000_0000_0000 Measured AUX1 data value relative to

reference:

000 = 0V

FFF = measured voltage after divide

matches reference

AUX1 Readback

WM8351 Datasheet(PDF) 279 Page - Wolfson Microelectronics plc

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