ThingMagic Micro Hardware User Manual
Page 62
Antenna Ports
A D I V I S I O N O F T R I M B L E
Functionality of the Micro
57
GPIO 1 & 2 Used for Antenna Switching
If only one GPIO Output line is used for antenna control, the combinations of the available
output control line states (the GPIO line in use and the module port) result in a subset of
logical antenna settings which can be used.
ONLY GPIO 1 Used for Antenna Switching
Note
The “missing” logical antenna settings are still usable when only one GPIO
line is used for antenna control and simply results in redundant logical
antenna settings. For example, using only GPIO 1, logical setting 1 and 3
both result in GPIO1=Low and Micro port A1 active.
Logical Antenna
Setting
GPIO
Output 1
State
GPIO
Output 2
State
Active Micro
Physical Port
1
Low
Low
A1
2
Low
Low
A2
3
Low
High
A1
4
Low
High
A2
5
High
Low
A1
6
High
Low
A2
7
High
High
A1
8
High
High
A2
Logical Antenna
Setting
GPIO
Output 1
State
Active Micro
Physical Port
1
Low
A1
2
Low
A2
5
High
A1
6
High
A2