Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual page 1086

Set DINDIS to disable the input of a gpio port. The pull-up, pull-down and glitch filter function can optionally be applied to the input, see
Figure 32.2 Tristated Output With Optional Pull-up or Pull-down on page
When MODEn is PUSHPULL or PUSHPULLALT, the pin operates in push-pull mode. In this mode, the pin can have alternate port con-
trol values and can be driven either high or low, dependent on the value of GPIO_Px_DOUT. The push-pull configuration is shown in
Figure 32.3 Push-Pull Configuration on page
When MODEn is WIREDOR or WIREDORPULLDOWN, the pin operates in open-source mode (with a pull-down resistor for WIRE-
DORPULLDOWN). When driving a high value in open-source mode, the pull-down is disconnected to save power.
When the mode is prefixed with WIREDAND, the pin operates in open-drain mode as shown in
In open-drain mode, the pin can have an input filter, a pull-up, alternate port control values or any combination of these. When driving a
low value in open-drain mode, the pull-up is disconnected to save power.
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Filter enable
Glitch
DIN suppression
filter
Analog connections
Figure 32.2. Tristated Output With Optional Pull-up or Pull-down
1086.
DOUT
DIN
Figure 32.3. Push-Pull Configuration
Filter enable
Glitch
DIN
suppression
filter
DOUT
Figure 32.4. Open-drain
GPIO - General Purpose Input/Output
1086.
IOVDD
Optional
Input enable
pull-up
Optional
pull-down
V
SS
Output Enable
Input Enable
IOVDD
Optional
pull-up
V
SS
Reference Manual
Figure 32.4 Open-drain on page
Rev. 1.1 | 1086
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