wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 147

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

Pre-Production
R118 (76h)
GPIO
Control 3
Register 76h GPIO Control 3
w
REGISTER
ADDRESS
13:8
BIT
7
6
5
4
3
2
1
0
GP3_INTMODE
GP3_OP_CFG
GP3_IP_CFG
GP3_FN[5:0]
GP3_DIR
GP3_LVL
GP3_PD
GP3_PU
GP3_DB
LABEL
DEFAULT
00_0000
1
0
1
0
1
0
0
0
GPIO 3 Pin Function select
00h = GPIO output
01h = Reserved
02h = IRQ output
03h = GPIO input
04h = MICBIAS Current detect
05h = MICBIAS Short Circuit detect
06h - 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 GP3_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
WM8903
147