WM8321 datasheet(34/253 Pages) WOLFSON

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WM8321

Production Data

PD, February 2012, Rev 4.0

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

RESET_HW

Most recent ON event type

0 = Not caused by Hardware

Reset

1 = Caused by Hardware Reset

RESET_WDOG

Most recent ON event type

0 = Not caused by the Watchdog

1 = Caused by a Device Reset

triggered by the Watchdog timer

R16399

(400Fh)

OFF Source

OFF_INTLDO_ERR

Most recent OFF event type

0 = Not caused by LDO13 Error

condition

1 = Caused by LDO13 Error

condition

OFF_PWR_SEQ

Most recent OFF event type

0 = Not caused by Power

Sequence Failure

1 = Caused by a Power Sequence

Failure

OFF_GPIO

Most recent OFF event type

0 = Not caused by GPIO input

1 = Caused by GPIO input

OFF_PVDD

Most recent OFF event type

0 = Not caused by PVDD

1 = Caused by the SYSLO or

SHUTDOWN threshold

OFF_THERR

Most recent OFF event type

0 = Not caused by temperature

1 = Caused by over-temperature

OFF_SW_REQ

Most recent OFF event type

0 = Not caused by software OFF

1 = Caused by software OFF

command (CHIP_ON = 0)

OFF_ON_PIN

Most recent OFF event type

0 = Not caused by the ON pin

1 = Caused by the ON pin

Table 2 Power State Control Registers

Table 3 lists all of the events which can trigger an ON, WAKE, OFF or SLEEP transition sequence. It

also lists the associated status bits of the ‘ON Source’ and ‘OFF Source’ register bits which are

asserted under each condition.

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