WM8321 datasheet(165/253 Pages) WOLFSON

165 / 253 page

Production Data

WM8321

PD, February 2012, Rev 4.0

165

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16422

(4026h)

RTC Trim

9:0

RTC_TRIM

[9:0]

00_0000_0

000

RTC frequency trim. Value is a 10bit fixed point <4,6>

2's complement number. MSB Scaling = -8Hz.

The register indicates the error (in Hz) with respect to

the ideal 32768Hz) of the input crystal frequency.

Protected by security key.

RTC Trim

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16429

(402Dh)

AuxADC

Data

15:12

AUX_DATA_S

RC [3:0]

0000

AUXADC Data Source

1 = GPIO10

2 = GPIO11

3 = GPIO12

5 = Chip Temperature

7 = PVDD voltage

All other values are Reserved

11:0

AUX_DATA

[11:0]

0000_0000

_0000

AUXADC Measurement Data

Voltage (mV) = AUX_DATA x 1.465

ChipTemp (°C) = (498 - AUX_DATA) / 1.09

AuxADC Data

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16430

(402Eh)

AuxADC

Control

AUX_ENA

AUXADC Enable

0 = Disabled

1 = Enabled

Note - this bit is reset to 0 when the OFF power state is

entered.

AUX_CVT_EN

AUXADC Conversion Enable

0 = Disabled

1 = Enabled

In automatic mode, conversions are enabled by setting

this bit.

In manual mode (AUX_RATE = 0), setting this bit will

initiate a conversion; the bit is reset automatically after

each conversion.

AUX_SLPENA

AUXADC SLEEP Enable

0 = Disabled

1 = Controlled by AUX_ENA

5:0

AUX_RATE

[5:0]

00_0000

AUXADC Conversion Rate

0 = Manual

1 = 2 samples/s

2 = 4 samples/s

3 = 6 samples/s

…

31 = 62 samples/s

32 = Reserved

33 = 16 samples/s

34 = 32 samples/s

35 = 48 samples/s

…

63 = 496 samples/s

AuxADC Control

WM8321 Datasheet(PDF) 165 Page - Wolfson Microelectronics plc

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