WM8904ECSSLASHR datasheet(122/188 Pages) WOLFSON

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WM8904

Pre-Production

PP, Rev 3.3, September 2012

122

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

GPI7_EINT_DB

GPI7 input debounce

0 = disabled

1 = enabled

FLL_LOCK_EINT_DB

FLL Lock debounce

0 = disabled

1 = enabled

MIC_SHRT_EINT_DB

MICBIAS short circuit interrupt

debounce

0 = disabled

1 = enabled

MIC_DET_EINT_DB

MICBIAS current detect

interrupt debounce

0 = disabled

1 = enabled

Table 82 Interrupt Debounce Registers

USING IN1L AND IN1R AS INTERRUPT INPUTS

IN1L pin has three input functions.



Analogue audio input



Digital microphone input (DMICDAT1)



Digital interrupt input (GPI7)

IN1R pin has three input functions.



Analogue audio input



Digital microphone input (DMICDAT2)



Digital interrupt input (GPI8)

To use these pins as digital interrupt inputs, they must be enabled using the GPI7_ENA and

GPI8_ENA bits as described in Table 83.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R124 (7Ch)

GPIO Control 4

GPI7_ENA

GPI7 input enable

0 = disabled

1 = enabled

GPI8_ENA

GPI8 input enable

0 = disabled

1 = enabled

Table 83 Enabling IN1L and IN1R as Interrupts GPI7 and GPI8

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