WM8352 datasheet(119/336 Pages) WOLFSON

119 / 336 page

Production Data

WM8352

PD, February 2011, Rev 4.4

119

The default GPIO settings for configuration mode 01 are shown below in Table 66.

GPIO PIN

POWER

DOMAIN

DEFAULT GPIO

FUNCTION

DEFAULT

DIRECTION

DEFAULT PULL-UP /

PULL-DOWN

DEFAULT

DE-BOUNCE

GPIO0

VRTC

GP0_FN [3:0] = 0000

GPIO

GP0_DIR = 1

GP0_CFG =1

Input, Active High

GP0_PD=0

GP0_PU=0

Normal Mode

GP0_DB = 1

Debounce enabled

GPIO1

VRTC

GP1_FN [3:0] = 0000

GPIO

GP1_DIR = 1

GP1_CFG =1

Input, Active High

GP1_PD=0

GP1_PU=0

Normal Mode

GP1_DB = 1

Debounce enabled

GPIO2

VRTC

GP2_FN [3:0] = 0011

32kHz

GP2_DIR = 0

GP2_CFG =1

Output, Open Drain

GP2_PD=0

GP2_PU=0

Normal Mode

GP2_DB = 1

Debounce enabled

GPIO3

VRTC

GP3_FN [3:0] = 0000

GPIO

GP3_DIR = 1

GP3_CFG =1

Input, Active High

GP3_PD=0

GP3_PU=0

Normal Mode

GP3_DB = 1

Debounce enabled

GPIO4

DBVDD

GP4_FN [3:0] = 0000

GPIO

GP4_DIR = 1

GP4_CFG =1

Input, Active High

GP4_PD=0

GP4_PU=0

Normal Mode

GP4_DB = 1

Debounce enabled

GPIO5

DBVDD

GP5_FN [3:0] = 0000

GPIO

GP5_DIR = 1

GP5_CFG =1

Input, Active High

GP5_PD=0

GP5_PU=0

Normal Mode

GP5_DB = 1

Debounce enabled

GPIO6

DBVDD

GP6_FN [3:0] = 0000

GPIO

GP6_DIR = 1

GP6_CFG =1

Input, Active High

GP6_PD=0

GP6_PU=0

Normal Mode

GP6_DB = 1

Debounce enabled

GPIO7

DBVDD

GP7_FN [3:0] = 0000

GPIO

GP7_DIR = 1

GP7_CFG =1

Input, Active High

GP7_PD=0

GP7_PU=0

Normal Mode

GP7_DB = 1

Debounce enabled

GPIO8

DBVDD

GP8_FN [3:0] = 0000

GPIO

GP8_DIR = 1

GP8_CFG =1

Input, Active High

GP8_PD=0

GP8_PU=0

Normal Mode

GP8_DB = 1

Debounce enabled

GPIO9

DBVDD

GP9_FN [3:0] = 0000

GPIO

GP9_DIR = 1

GP9_CFG =1

Input, Active High

GP9_PD=0

GP9_PU=0

Normal Mode

GP9_DB = 1

Debounce enabled

GPIO10

LINE

GP10_FN [3:0] = 0011

CH_IND

GP10_DIR = 0

GP10_CFG =1

Output, Open Drain

GP10_PD=0

GP10_PU=0

Normal Mode

GP10_DB = 1

Debounce enabled

GPIO11

LINE

GP11_FN [3:0] = 0010

/WAKEUP

GP11_DIR = 1

GP11_CFG =1

(see note)

GP11_PD=0

GP11_PU=0

Normal Mode

GP11_DB = 1

Debounce enabled

GPIO12

LINE

GP12_FN [3:0] = 0011

LINE_SW

GP12_DIR = 0

GP12_CFG =0

Output, CMOS

GP12_PD=0

GP12_PU=0

Normal Mode

GP12_DB = 1

Debounce enabled

Note: The alternate GPIO function /WAKEUP is a system wakeup event. The debounce time of this function is

determined by GP_DBTIME[1:0] + 40ms

Table 66 Default GPIO Settings for Configuration Mode 01

Note that setting GP11_CFG = 1 results in Active Low function for /WAKEUP. In most cases, setting

GPn_CFG = 1 results in Active High function, but /MR, /WAKEUP and /LDO_ENA are exceptions to

this. See Section 20.

WM8352 Datasheet(PDF) 119 Page - Wolfson Microelectronics plc

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