LM3S3748 Datasheet, PDF (256/753 Pages) List of Unclassifed Manufacturers – Microcontroller

General-Purpose Input/Outputs (GPIOs)
Table 10-2. GPIO Interrupt Configuration Example
Register Desired
Pin 2 Bit Value^a
Interrupt
Event
7
6
5
4
Trigger
GPIOIS
0=edge
X
X
X
X
1=level
GPIOIBE
0=single
X
X
X
X
edge
1=both
edges
GPIOIEV 0=Low level,
X
X
X
X
or negative
edge
1=High level,
or positive
edge
GPIOIM
0=masked
0
0
0
0
1=not
masked
a. X=Ignored (don’t care bit)
3
X
X
X
0
2
0
0
1
1
1
X
X
X
0
0
X
X
X
0
10.3
Register Map
Table 10-3 on page 257 lists the GPIO registers. The offset listed is a hexadecimal increment to the
register’s address, relative to that GPIO port’s base address:
■ GPIO Port A (legacy): 0x4000.4000
■ GPIO Port A (high-speed): 0x4005.8000
■ GPIO Port B (legacy): 0x4000.5000
■ GPIO Port B (high-speed): 0x4005.9000
■ GPIO Port C (legacy): 0x4000.6000
■ GPIO Port C (high-speed): 0x4005.A000
■ GPIO Port D (legacy): 0x4000.7000
■ GPIO Port D (high-speed): 0x4005.B000
■ GPIO Port E (legacy): 0x4002.4000
■ GPIO Port E (high-speed): 0x4005.C000
■ GPIO Port F (legacy): 0x4002.5000
■ GPIO Port F (high-speed): 0x4005.D000
■ GPIO Port G (legacy): 0x4002.6000
■ GPIO Port G (high-speed): 0x4005.E000
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April 08, 2008
Preliminary