Maxim Integrated MAX32660 - Table 6-25: GPIO Pullup;Pulldown Select Register

MAX32660 User Guide
Maxim Integrated Page 70 of 195
GPIO Drive Strength 1 Select Register
GPIO0_DS1_SEL
[0x00B4]
Bits
Name
Access
Reset
Description
1:0
-
R/W
0
GPIO Drive Strength 1 Select
The output drive strength supports four modes. The mode selection is set using the
combination of the GPIO0_DS1_SEL and GPIO0_DS0_SEL bits for the associated GPIO
pin. Refer to the GPIO Drive Strength section, above, for the selection options on these
I/O pins.
Refer to the symbols V
OL_GPIO
and V
OH_GPIO
in the MAX32660 Data Sheet Electrical
Characteristics table for details of the drive strengths for these I/O pins.
Table 6-25: GPIO Pullup/Pulldown Select Register
GPIO Pullup/Pulldown Select Register
GPIO_PULL_SEL
[0x00B8]
Bits
Name
Access
Reset
Description
31:14
-
R/W
0
Reserved for Future Use
Do not modify this field.
13:10
-
R/W
0
Pullup/Pulldown Resistor Select
Selects either a weak pull-up or weak pull-down resistor for the respective I/O pin.
0: Pull-down resistor selected
1: Pull-up resistor selected
Refer to the MAX32660 Data Sheet Electrical Characteristics table for details of the
pull-up/pull-down resistors for the respective I/O pins.
9:8
-
R/W
0
Pulldown Resistor Select
This bit should always be set to 0. The I/O pins with I
2
C as an alternate function only a
weak pull-down resistor.
0: Pull-down resistor selected
1: Invalid
Refer to the MAX32660 Data Sheet Electrical Characteristics table for details of the
pull-up/pull-down resistors for the respective I/O pins.
7:4
-
R/W
0
Pullup/Pulldown Resistor Select
Selects either a weak pull-up or weak pull-down resistor for the respective I/O pin.
0: Pull-down resistor selected
1: Pull-up resistor selected
Refer to the MAX32660 Data Sheet Electrical Characteristics table for details of the
pull-up/pull-down resistors for the respective I/O pins.
3:2
-
R/W
0
Pulldown Resistor Select
This bit should always be set to 0. The I/O pins with I
2
C as an alternate function only a
weak pull-down resistor.
0: Pull-down resistor selected
1: Invalid
Refer to the MAX32660 Data Sheet Electrical Characteristics table for details of the
pull-up/pull-down resistors for the respective I/O pins.
1:0
-
R/W
0
Pullup/Pulldown Resistor Select
Selects either a weak pull-up or weak pull-down resistor for the respective I/O pin.
0: Pull-down resistor selected
1: Pull-up resistor selected
Refer to the MAX32660 Data Sheet Electrical Characteristics table for details of the
pull-up/pull-down resistors for the respective I/O pins.