WM8321 datasheet(125/253 Pages) WOLFSON

125 / 253 page

Production Data

WM8321

PD, February 2012, Rev 4.0

125

ADDRESS

BIT

LABEL

DESCRIPTION

R16401

(4011h)

Interrupt Status

PPM_SYSLO_EINT

Power Path SYSLO interrupt

(Rising Edge triggered)

Note: Cleared when a ‘1’ is written.

R16409

(4019h)

Interrupt Status

1 Mask

IM_PPM_SYSLO_EINT

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

Table 71 Power Path Management Interrupts

23.2.8 REAL TIME CLOCK AND CRYSTAL OSCILLATOR INTERRUPTS

The primary RTC_INT interrupt comprises four secondary interrupts as described in Section 20.3. The

secondary interrupt bits are defined in Table 72.

Each of the secondary interrupts can be masked except for XTAL_TAMPER_EINT, which cannot be

masked. When a mask bit is set, the corresponding interrupt event is masked and does not trigger a

RTC_INT interrupt. The secondary interrupt bits in R16401 (4011h) and R16404 (4014h) are valid

regardless of whether the mask bit is set.

The secondary interrupts are all masked by default, except for XTAL_TAMPER_EINT, which cannot

be masked.

ADDRESS

BIT

LABEL

DESCRIPTION

R16401

(4011h)

Interrupt Status

RTC_PER_EINT

RTC Periodic interrupt

(Rising Edge triggered)

Note: Cleared when a ‘1’ is written.

RTC_ALM_EINT

RTC Alarm interrupt

(Rising Edge triggered)

Note: Cleared when a ‘1’ is written.

R16404

(4014h)

Interrupt Status

XTAL_START_EINT

Crystal Oscillator Start Failure interrupt

(Rising Edge triggered)

Note: Cleared when a ‘1’ is written.

XTAL_TAMPER_EINT

Crystal Oscillator Tamper interrupt

(Rising and Falling Edge triggered)

Note: Cleared when a ‘1’ is written.

R16409

(4019h)

Interrupt Status

1 Mask

IM_RTC_PER_EINT

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

IM_RTC_ALM_EINT

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

R16412

(401Ch)

Interrupt Status

4 Mask

IM_XTAL_START_EINT

Interrupt mask.

0 = Do not mask interrupt.

1 = Mask interrupt.

Default value is 1 (masked)

Table 72 Real Time Clock (RTC) and Crystal Oscillator (XTAL) Interrupts

WM8321 Datasheet(PDF) 125 Page - Wolfson Microelectronics plc

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