LM3S101-CRN20-XNPP ETC1 [List of Unclassifed Manufacturers], LM3S101-CRN20-XNPP Datasheet - Page 99

• Manufacturer Part Number: LM3S101-CRN20-XNPP
• Description: Microcontroller
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

General-Purpose Input/Outputs (GPIOs)
Table 8-3.
a. The default reset value for the GPIOAFSEL register is 0x00000000 for all GPIO pins, with the exception of the five JTAG pins
8.5
99
0xFDC
0xFEC
Offset
0x50C
0x51C
0xFD0
0xFD4
0xFD8
0xFE0
0xFE4
0xFE8
0xFFC
0xFF0
0xFF4
0xFF8
0x500
0x504
0x508
0x510
0x514
0x518
(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 0x00000080 while the default reset value of GPIOAFSEL for Port C is 0x0000000F.
GPIOPeriphID4
GPIOPeriphID5
GPIOPeriphID6
GPIOPCellID3
Name
GPIODR2R
GPIODR4R
GPIODR8R
GPIOODR
GPIOPUR
GPIOPDR
GPIOSLR
GPIODEN
GPIOPeriphID7
GPIOPeriphID0
GPIOPeriphID1
GPIOPeriphID2
GPIOPeriphID3
GPIOPCellID0
GPIOPCellID1
GPIOPCellID2
Register Descriptions
The remainder of this section lists and describes the GPIO registers, in numerical order by
address offset.
GPIO Register Map
0x0000000D
0x000000B1
0x000000FF
0x00000000
0x00000000
0x00000000
0x000000FF
0x00000000
0x00000000
0x000000FF
0x00000000
0x00000000
0x00000000
0x00000000
0x00000061
0x00000000
0x00000018
0x00000001
0x000000F0
0x00000005
Reset
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Preliminary
Description
2-mA drive select
4-mA drive select
8-mA drive select
Open drain select
Pull-up select
Pull-down select
Slew rate control select
Digital input enable
Peripheral identification 4
Peripheral identification 5
Peripheral identification 6
Peripheral identification 7
Peripheral identification 0
Peripheral identification 1
Peripheral identification 2
Peripheral identification 3
GPIO PrimeCell identification 0
GPIO PrimeCell identification 1
GPIO PrimeCell identification 2
GPIO PrimeCell identification 3
March 22, 2006
See
page
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