wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 54

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

WM9712L
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Table 39 Using GPIO Pins for Non-GPIO Functions
Table 40 Additional Functionality for GPIO Pins
56h
GPIO pins
function
select
58h
Additional
Functional
Control
REGISTER
REGISTER
ADDRESS
ADDRESS
2
3
4
5
0
1
BIT
BIT
GE2
GE3
GE4
GE5
IRQ INV
WAKEEN
LABEL
LABEL
1
1
1
1
DEFAULT
0
0
DEFAULT
GPIO2 / IRQ output select
0: Pin 45 disconnected from GPIO logic
1: Pin 45 connected to GPIO logic (IRQ disabled)
GPIO3 / PENDOWN output select
0: Pin 46 disconnected from GPIO logic
1: Pin 46 connected to GPIO logic
GPIO4 / ADA / MASK output select
0: Pin 47 disconnected from GPIO logic
1: Pin 47 connected to GPIO logic
GPIO5 / SPDIF output select
0: Pin 48 = SPDIF (disconnected from GPIO logic)
1: Pin 48 connected to GPIO logic (SPDIF
disabled)
Inverts the IRQ signal (pin 45)
0: IRQ signal not inverted
1: IRQ signal inverted
Enables GPIO wake-up
0: Disabled
1: Enabled
set 4Ch, bit 2 to ‘0’ to output IRQ signal
set 4Ch, bit 3 to ‘0’ to output PENDOWN signal
set 4Ch, bit 4 to ‘0’ to output ADA signal
set 4Ch, bit 4 to ‘1’ to input MASK signal
set 4Ch, bit 5 to ‘0’ to output SPDIF signal
DESCRIPTION
DESCRIPTION
PD Rev 4.5 August 2006
Production Data
54