wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 146

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8903
R117 (75h)
GPIO
Control 2
Register 75h GPIO Control 2
w
REGISTER
ADDRESS
13:8
BIT
7
6
5
4
3
2
1
0
GP2_INTMODE
GP2_OP_CFG
GP2_IP_CFG
GP2_FN[5:0]
GP2_DIR
GP2_LVL
GP2_PD
GP2_PU
GP2_DB
LABEL
DEFAULT
00_0000
1
0
1
0
1
0
0
0
GPIO 2 Pin Function select
00h = GPIO output
01h = Reserved
02h = IRQ output
03h = GPIO input
04h = MICBIAS Current detect
05h = MICBIAS Short Circuit detect
06h = DMIC_DAT Data input
07h to 3Fh = Reserved
GPIO Pin Direction
0 = Output
1 = Input
Output pin configuration
0 = CMOS
1 = Open-drain
Input pin configuration
0 = Active low
1 = Active high
GPIO Output Level
(when GP2_FN = 00000)
0 = Logic 0
1 = Logic 1
GPIO Pull-Down Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 100kΩ)
GPIO Pull-Up Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 100kΩ)
GPIO Interrupt Mode
0 = Level triggered
1 = Edge triggered
GPIO de-bounce
0 = GPIO is not debounced
1 = GPIO is debounced
DESCRIPTION
PP, Rev 3.1, August 2009
Pre-Production
146