wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 119
wm8352
Manufacturer Part Number
wm8352
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8352.pdf
(335 pages)
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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
GPIO PIN
GPIO10
GPIO11
GPIO12
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
DOMAIN
POWER
DBVDD
DBVDD
DBVDD
DBVDD
DBVDD
DBVDD
VRTC
VRTC
VRTC
VRTC
LINE
LINE
LINE
The default GPIO settings for configuration mode 01 are shown below in Table 65.
Table 65 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.
GP10_FN [3:0] = 0011
GP11_FN [3:0] = 0010
GP12_FN [3:0] = 0011
GP4_FN [3:0] = 0000
GP5_FN [3:0] = 0000
GP8_FN [3:0] = 0000
GP0_FN [3:0] = 0000
GP1_FN [3:0] = 0000
GP2_FN [3:0] = 0011
GP3_FN [3:0] = 0000
GP6_FN [3:0] = 0000
GP7_FN [3:0] = 0000
GP9_FN [3:0] = 0000
DEFAULT GPIO
FUNCTION
/WAKEUP
LINE_SW
CH_IND
32kHz
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
Output, Open Drain
Output, Open Drain
Input, Active High
Input, Active High
Input, Active High
Input, Active High
Input, Active High
Input, Active High
Input, Active High
Input, Active High
Input, Active High
GP10_CFG =1
GP11_CFG =1
GP12_CFG =0
Output, CMOS
GP10_DIR = 0
GP11_DIR = 1
GP12_DIR = 0
GP0_CFG =1
GP1_CFG =1
GP2_CFG =1
GP3_CFG =1
GP4_CFG =1
GP5_CFG =1
GP6_CFG =1
GP7_CFG =1
GP8_CFG =1
GP9_CFG =1
GP0_DIR = 1
GP1_DIR = 1
GP2_DIR = 0
GP3_DIR = 1
GP4_DIR = 1
GP5_DIR = 1
GP6_DIR = 1
GP7_DIR = 1
GP8_DIR = 1
GP9_DIR = 1
DIRECTION
DEFAULT
(see note)
DEFAULT PULL-UP /
PULL-DOWN
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
Normal Mode
GP10_PD=0
GP10_PU=0
GP11_PD=0
GP11_PU=0
GP12_PD=0
GP12_PU=0
GP0_PD=0
GP0_PU=0
GP1_PD=0
GP1_PU=0
GP2_PD=0
GP2_PU=0
GP3_PD=0
GP3_PU=0
GP4_PD=0
GP4_PU=0
GP5_PD=0
GP5_PU=0
GP6_PD=0
GP6_PU=0
GP7_PD=0
GP7_PU=0
GP8_PD=0
GP8_PU=0
GP9_PD=0
GP9_PU=0
PD, June 2009, Rev 4.1
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
Debounce enabled
GP10_DB = 1
GP11_DB = 1
GP12_DB = 1
DE-BOUNCE
GP0_DB = 1
GP1_DB = 1
GP2_DB = 1
GP3_DB = 1
GP4_DB = 1
GP5_DB = 1
GP6_DB = 1
GP7_DB = 1
GP8_DB = 1
GP9_DB = 1
DEFAULT
WM8352
119
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