User's Guide

ThingMagic M6e User Guide 6
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loader by Reset Line being held low. Lines configured as outputs consume no excess power if the output is
left open. Specified module power consumption is achieved for one or more GPIO lines set as output and
left open. Users who are not able to provide external pull ups or pull downs on any given input, and who do
not need that GPIO line, may configure it as an output and leave it open to achieve specified module power
consumption.
Configuring GPIO Settings
The GPIO lines are configured as inputs or outputs through the MercuryAPI by setting the reader
configuration parameters /reader/gpio/inputList and /reader/gpio/outputList. Once configured as inputs or
outputs the state of the lines can be Get or Set using the gpiGet() and gpoSet() methods, respectively. See
the language specific reference guide for more details.
Reset Line
Upon power up, the RESET line (pin 15) is configured as an input. The input value will determine whether
the
Boot Loader will wait for user commands (if pulled LOW) or immediately load the Application Firmware
image and enter application mode (if left open or pulled up). After that action is completed, the line is
configured by the firmware as an output line. Whenever the module is in bootloader the line is in the
bootloader state and driven high.
Once in application mode, the RESET line is driven low. If the module returns to the bootloader mode,
either due to an assert or “boot bootloader,” the RESET line will again be driven high.
To minimize power consumption in the application, the RESET line should be either left open or pulled
weakly low (1.5k ohm to ground).
See Note about baud rate applicable when using
TTL Level UART Interface.
Power Requirements
RF Power Output
The M6e supports separate read and write power levels which are command adjustable via the
MercuryAPI. Power levels must be between:
• Minimum RF Power = +5 dBm
• Maximum RF Power = +31.5 dBm (+/- 0.5 dB accuracy above +15 dBm)
NOTE: Maximum power may have to be reduced to meet regulatory limits, which specify the combined
effect of the module, antenna, cable and enclosure shielding of the integrated product.
NOTE: FCC regulations limit the maximum RF Power to 30 dBm in NA Region. For 31.5 dBm operation
in the NA Region the M6e-A must be purchased.
Special RF Power Output Requirements for the M6e-A
Warning: Operation of the M6e-A requires professional installation to correctly set the TX power for
the RF cable and antenna selected.