WM8945ECSSLASHR datasheet(94/169 Pages) WOLFSON

94 / 169 page

WM8945

Production Data

PD, May 2011, Rev 4.1

GPn_FN

DESCRIPTION

COMMENTS

0000

Logic level input

External logic level is read from GPn_LVL.

Associated interrupt (when enabled) is level-triggered.

0001

Edge detection input

External logic level is read from GPn_LVL.

Associated interrupt (when enabled) is edge

triggered. Note that TOCLK_ENA must be set.

0010

CLKOUT output

Output clock frequency is set by CLKOUT_DIV.

0011

Interrupt (IRQ) output

Hardware output of all unmasked Interrupts.

0100

Pen Down output

Indicates Touch Panel Pen Down detection.

This flag is asserted whenever the Pen is in contact

with the Touch Panel.

0101

Touch Panel

measurement complete

Indicates a set of Touch Panel measurements has

been completed.

This function provides a pulse when new Touch Panel

measurement data is ready. The pulse duration is

approximately 1.95

s.

0110

Auxiliary ADC

measurement complete

Indicates a new Auxiliary ADC measurement has

been completed.

This function provides a pulse when new AUXADC

measurement data is ready. The pulse duration is

approximately 1.95

s.

0111

Temperature flag output

Indicates the temperature sensor output. This is a

hardware output of the TEMP_STS bit (assuming

GPn_POL = 0).

0 = Normal

1 = Overtemperature

1000

Reserved

1001

DMICCLK output

Output clock for digital microphone interface

1010

Logic level output

Pin logic level is set by GPn_LVL.

1011

LDO_UV output

Indicates the LDO undervoltage status. This is a

hardware output of the LDO_UV_STS bit (assuming

GPn_POL = 0).

0 = Normal

1 = LDO undervoltage

1100

Reserved

1101

Reserved

1110

Reserved

1111

Reserved

Table 63 GPIO Function Select

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