wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 103

• Manufacturer Part Number: wm9714l
• Description: Ac?97 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

4Ch
4Eh
50h
52h
54h
Bit definitions
for registers
4Ch to 54h
56h
Pre-Production
Register 4Ch to 54h control the GPIO pins and virtual GPIO signals.
Register 56h controls the use of GPIO pins for non-GPIO functions.
w
REGISTER
REGISTER
ADDRESS
ADDRESS
n
n
n
n
n
15
14
12
11
10
9
8
7
6
5
4
3
2
1
8
6
5
4
2
BIT
BIT
GCn
GPn
GSn
GWn
GIn
GE8
GE6
GE5
GE4
GE2
LABEL
LABEL
1 (input)
1 (active high)
0 (not sticky)
0 (no wake-
up)
N/A
1 (GPIO)
1 (GPIO)
1 (GPIO)
1 (GPIO)
1 (GPIO)
DEFAULT
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 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)
GPIO8 (Pin 12) Function Control
0 = Pin 12 is not controlled by GPIO logic
1 = Pin 12 is controlled by GPIO logic
GPIO6 (Pin 3) Function Control
0 = Pin 3 is not controlled by GPIO logic
1 = Pin 3 is controlled by GPIO logic
GPIO5 (Pin 48) Function Control
0 = Pin 48 is not controlled by GPIO logic
1 = Pin 48 is controlled by GPIO logic
GPIO4 (Pin 47) Function Control
0 = Pin 47 is not controlled by GPIO logic
1 = Pin 47 is controlled by GPIO logic
GPIO2 (Pin 45) Function Control
0 = Pin 45 is not controlled by GPIO logic
1 = Pin 45 is controlled by GPIO logic
DESCRIPTION
DESCRIPTION
0 = CMOS output
1 = Open drain
Output (GCn = 0)
PP, Rev 3.2, October 2008
WM9714L
GPIO and
Interrupt
Control
GPIO and
Interrupt
Control
REFER TO
REFER TO
103