LM3S308 Luminary Micro, Inc, LM3S308 Datasheet - Page 131

• Manufacturer Part Number: LM3S308
• Description: Lm3s308 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Table 8-3. GPIO Register Map
June 04, 2008
Offset
0x40C
0x41C
0x50C
0x51C
0xFD0
0xFD4
0x000
0x400
0x404
0x408
0x410
0x414
0x418
0x420
0x500
0x504
0x508
0x510
0x514
0x518
Name
GPIODATA
GPIODIR
GPIOIS
GPIOIBE
GPIOIEV
GPIOIM
GPIORIS
GPIOMIS
GPIOICR
GPIOAFSEL
GPIODR2R
GPIODR4R
GPIODR8R
GPIOODR
GPIOPUR
GPIOPDR
GPIOSLR
GPIODEN
GPIOPeriphID4
GPIOPeriphID5
■
■
■
■
Important:
Note:
GPIO Port B: 0x4000.5000
GPIO Port C: 0x4000.6000
GPIO Port D: 0x4000.7000
GPIO Port E: 0x4002.4000
The default reset value for the GPIOAFSEL register is 0x0000.0000 for all GPIO pins, with
the exception of the five JTAG pins (PB7 and PC[3:0]). These five pins default to JTAG
functionality. Because of this, the default reset value of GPIOAFSEL for GPIO Port B is
0x0000.0080 while the default reset value for Port C is 0x0000.000F.
The GPIO registers in this chapter are duplicated in each GPIO block, however,
depending on the block, all eight bits may not be connected to a GPIO pad. In those
cases, writing to those unconnected bits has no effect and reading those unconnected
bits returns no meaningful data.
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
RO
RO
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
0x0000.00FF
0x0000.0000
0x0000.0000
0x0000.00FF
0x0000.0000
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 Peripheral Identification 4
GPIO Peripheral Identification 5
LM3S308 Microcontroller
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