WM8593 datasheet(53/98 Pages) WOLFSON

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WM8593

PP Rev 1.0 January 2007

USING GPIO PINS AS ADDITIONAL DATA PINS

There are two GPIO pins, GPIO1 and GPIO2, which can be used as additional pins to connect to

external devices. GPIO1 is controlled by GPIO1_SEL[2:0] and GPIO2 by GPIO2_SEL[2:0].

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

3:1

GPIO1_

SEL[2:0]

000

GPIO1 Pin Function Select

000 = Source DIO1

001 = Source DIO2

010 = Source DIO3

011 = Source DIO4

100 = Source DIO5

101 = Input to WM8593

110 = Source GPIO2

111 = Source ADC Data Output

R45

AIF_MUX9

2Dh

GPIO1_

UPD

GPIO1 Update

0 = Latch corresponding GPIO1 settings into

1 = Latch corresponding GPIO1 settings into

Table 41 GPIO1 Audio Interface Mux Configuration

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

3:1

GPIO2_

SEL[2:0]

000

GPIO2 Pin Function Select

000 = Source DIO1

001 = Source DIO2

010 = Source DIO3

011 = Source DIO4

100 = Source DIO5

101 = Source GPIO1

110 = Input to WM8593

111 = Source ADC Data Output

R46

AIF_MUX10

2Eh

GPIO2_

UPD

GPIO2 Update

0 = Latch corresponding GPIO2 settings into

1 = Latch corresponding GPIO2 settings into

Table 42 GPIO2 Audio Interface Mux Configuration

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