wm9713 Wolfson Microelectronics plc, wm9713 Datasheet - Page 114

• Manufacturer Part Number: wm9713
• Description: Ac?97 Audio + Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

4Ch
4Eh
50h
52h
54h
Bit definitions
for registers
4Ch to 54h
WM9713L
Register 4Ch to 54h control the GPIO pins and virtual GPIO signals.
w
REGISTER
ADDRESS
n
n
n
n
n
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
BIT
GCn
GPn
GSn
GWn
GIn
LABEL
1 (input)
1 (active high)
0 (not sticky)
0 (no wake-
up)
N/A
DEFAULT
GPIO Pin Configuration Control
0 = Output
1 = Input (GC9-15 are always inputs)
GPIO Pin Polarity / Type
Input (GCn = 1)
0 = Active low
1 = Acitve high
GPIO Pin Sticky Control
0 = Not sticky
1 = Sticky
GPIO Pin Wake-up Control
0 = No wake-up (no interrupts generated by GPIO)
1 = Wake-up (generate interrupts from GPIO)
GPIO Pin Status
Read = Returns status of GPIO
Write = Writing 0 clears sticky bits
Controls Comparator 1 signal (virtual GPIO)
Controls Comparator 2 signal (virtual GPIO)
Controls Pen-Down Detector signal (virtual GPIO)
Controls ADA signal (virtual GPIO)
Controls Thermal sensor signal (virtual GPIO)
Controls Microphone short detect (virtual GPIO)
Controls Microphone insert detect (virtual GPIO)
Controls GPIO8 (pin 3)
Controls GPIO7 (pin 11)
Controls GPIO6 (pin 12)
Controls GPIO5 (pin 48)
Controls GPIO4 (pin 47)
Controls GPIO3 (pin 46)
Controls GPIO2 (pin 45)
Controls GPIO1 (pin 44)
DESCRIPTION
Output (GCn = 0)
0 = CMOS output
1 = Open drain
PP Rev 3.2 September 2008
Pre-Production
GPIO and
Interrupt
Control
REFER TO
114