WM8281ECSSLASHR datasheet(224/392 Pages) CIRRUS

224 / 392 page

WM8281

224

Rev 4.0

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R3408

(0D50h)

AOD wkup

and trig

MICD_CLAMP_FALL_

TRIG_STS

MICDET Clamp Trigger Status

(Falling edge triggered)

Note: Cleared when a ‘1’ is written

MICD_CLAMP_RISE_

TRIG_STS

MICDET Clamp Trigger Status

(Rising edge triggered)

Note: Cleared when a ‘1’ is written

GP5_FALL_TRIG_STS

GP5 Trigger Status

(Falling edge triggered)

Note: Cleared when a ‘1’ is written

GP5_RISE_TRIG_STS

GP5 Trigger Status

(Rising edge triggered)

Note: Cleared when a ‘1’ is written

JD1_FALL_TRIG_STS

JD1 Trigger Status

(Falling edge triggered)

Note: Cleared when a ‘1’ is written

JD1_RISE_TRIG_STS

JD1 Trigger Status

(Rising edge triggered)

Note: Cleared when

a ‘1’ is written

Table 83 JD1, GP5 and MICDET Clamp Trigger Status Registers

Note that the de-bounce function on all inputs (including JD1, GP5 and MICDET Clamp status) use

the 32kHz clock (see “Clocking and Sample Rates”). The 32kHz clock must be enabled whenever

input de-bounce functions are required.

Note that the MCLK2 input pin is on the ‘Always-On’ domain, and is supported in Sleep mode.

(MCLK1 input is not supported in Sleep mode.)

If input de-bounce is enabled in Sleep mode, the 32kHz clock must use MCLK2 (direct) input as its

source (CLK_32K_SRC = 01).

WAKE-UP TRANSITION

A Wake-Up transition (exit from Sleep) can be associated with any of the JD1, GP5 or MICDET

Clamp trigger status bits. This is selected using the register bits described in Table 84.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R64 (0040h)

Wake

Control

WKUP_MICD_CLAMP

_FALL

MICDET Clamp (Falling) Wake-Up

Select

0 = Disabled

1 = Enabled

WKUP_MICD_CLAMP

_RISE

MICDET Clamp (Rising) Wake-Up

Select

0 = Disabled

1 = Enabled

WKUP_GP5_FALL

GP5 (Falling) Wake-Up Select

0 = Disabled

1 = Enabled

WKUP_GP5_RISE

GP5 (Rising) Wake-Up Select

0 = Disabled

1 = Enabled

WKUP_JD1_FALL

JD1 (Falling) Wake-Up Select

0 = Disabled

1 = Enabled

WKUP_JD1_RISE

JD1 (Rising) Wake-Up Select

0 = Disabled

1 = Enabled

Table 84 JD1, GP5 and MICDET Clamp Wake-Up Control Registers

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