WM8321 datasheet(224/253 Pages) WOLFSON

224 / 253 page

WM8321

Production Data

PD, February 2012, Rev 4.0

224

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16528

(4090h)

Clock

Control 1

CLKOUT_ENA

CLKOUT output enable

0 = Disabled

1 = Enabled

Protected by security key.

CLKOUT_OD

CLKOUT pin configuration

0 = CMOS

1 = Open Drain

10:8

CLKOUT_SLO

T [2:0]

000

CLKOUT output enable ON slot select

000 = Do not enable

001 = Enable in Timeslot 1

010 = Enable in Timeslot 2

011 = Enable in Timeslot 3

100 = Enable in Timeslot 4

101 = Enable in Timeslot 5

110 = Do not enable

111 = Do not enable

6:4

CLKOUT_SLP

SLOT [2:0]

000

CLKOUT output SLEEP slot select

000 = Controlled by CLKOUT_ENA

001 = Disable in Timeslot 5

010 = Disable in Timeslot 4

011 = Disable in Timeslot 3

100 = Disable in Timeslot 2

101 = Disable in Timeslot 1

110 = Controlled by CLKOUT_ENA

111 = Controlled by CLKOUT_ENA

Clock Control 1

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16529

(4091h)

Clock

Control 2

XTAL_INH

Crystal Start-Up Inhibit

0 = Disabled

1 = Enabled

When XTAL_INH=0, the internal RC oscillator will

provide CLKOUT until the crystal oscillator is valid.

When XTAL_INH=1, the ‘ON’ transition is inhibited until

the crystal oscillator is valid.

XTAL_ENA

Crystal Oscillator Enable

0 = Disabled at all times

1 = Enabled in OFF, ON, SLEEP states

(Note that the BACKUP behaviour is determined by

XTAL_BKUPENA.)

This field can only be written to by loading configuration

settings from OTP/ICE. In all other cases, this field is

Read Only.

XTAL_BKUPE

Selects the RTC and 32.768kHz oscillator in BACKUP

state

0 = RTC unclocked in BACKUP

1 = RTC maintained in BACKUP

(Note that XTAL_ENA must also be set if the RTC is to

be maintained in BACKUP)

Clock Control 2

WM8321 数据表(PDF) 224 Page - Wolfson Microelectronics plc

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