LM3S5652 Luminary Micro, Inc, LM3S5652 Datasheet - Page 248

• Manufacturer Part Number: LM3S5652
• Description: Lm3s5652 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

General-Purpose Input/Outputs (GPIOs)
Table 10-3. GPIO Register Map
248
Offset
0x40C
0x41C
0x50C
0x51C
0x000
0x400
0x404
0x408
0x410
0x414
0x418
0x420
0x500
0x504
0x508
0x510
0x514
0x518
0x520
0x524
0x528
Name
GPIODATA
GPIODIR
GPIOIS
GPIOIBE
GPIOIEV
GPIOIM
GPIORIS
GPIOMIS
GPIOICR
GPIOAFSEL
GPIODR2R
GPIODR4R
GPIODR8R
GPIOODR
GPIOPUR
GPIOPDR
GPIOSLR
GPIODEN
GPIOLOCK
GPIOCR
GPIOAMSEL
Note:
The default reset value for the GPIOAFSEL, GPIOPUR, and GPIODEN registers are
0x0000.0000 for all GPIO pins, with the exception of the four JTAG/SWD pins (PC[3:0]).
These four pins default to JTAG/SWD functionality. Because of this, the default reset value
of these registers for Port C is 0x0000.000F.
The default register type for the GPIOCR register is RO for all GPIO pins, with the exception
of the NMI pin and the four JTAG/SWD pins (PB7 and PC[3:0]). These five pins are
currently the only GPIOs that are protected by the GPIOCR register. Because of this, the
register type for GPIO Port B7 and GPIO Port C[3:0] is R/W.
The default reset value for the GPIOCR register is 0x0000.00FF for all GPIO pins, with the
exception of the NMI pin and the four JTAG/SWD pins (PB7 and PC[3:0]). To ensure that
the JTAG port is not accidentally programmed as a GPIO, these four pins default to
non-committable. To ensure that the NMI pin is not accidentally programmed as the
non-maskable interrupt pin, it defaults to non-committable. Because of this, the default reset
value of GPIOCR for GPIO Port B is 0x0000.007F while the default reset value of GPIOCR
for Port C is 0x0000.00F0.
Type
W1C
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
-
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.00FF
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0000
0x0000.0001
0x0000.0000
Reset
-
-
-
-
Preliminary
Description
GPIO Data
GPIO Direction
GPIO Interrupt Sense
GPIO Interrupt Both Edges
GPIO Interrupt Event
GPIO Interrupt Mask
GPIO Raw Interrupt Status
GPIO Masked Interrupt Status
GPIO Interrupt Clear
GPIO Alternate Function Select
GPIO 2-mA Drive Select
GPIO 4-mA Drive Select
GPIO 8-mA Drive Select
GPIO Open Drain Select
GPIO Pull-Up Select
GPIO Pull-Down Select
GPIO Slew Rate Control Select
GPIO Digital Enable
GPIO Lock
GPIO Commit
GPIO Analog Mode Select
June 02, 2008
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