Rfid module – ThingMagic Mercury xPRESS Platform v1.7 User Manual
Page 107
A D I V I S I O N O F T R I M B L E
Hardware Reference Guide
107
UARTx2 to Comm Bus Interface
ADC/DAC to Comm Bus Interface
CAN to Comm Bus Interface
JTAG
These interfaces allow the MCU to control and access a wide range of functionality:
Control of USB OTG functionality, and whether the USB interface will be powered by
the xPRESS motherboard
Access and control over module data (TTL UART, not USB), GPIO, reset and
shutdown lines.
Monitors user-defined switch and drives the power LED and three user-defined LEDs
Keeps track of time and will not forget it across a power-down reboot if the CR1220
coin cell or charged Li-ion battery is present.
Monitors critical system voltages (can measure their exact level though A-D
converters).
RFID Module
There are three module options available with the xPRESS platform: an M6e module, a
Micro or a Micro-LTE module.
The Micro-family modules are soldered down to a carrier board which provides access to
M6e-type I/O connectors:
M6e Power/Control connector
Two MMCX RF connectors.
USB type micro-A connector
The Micro carrier board is mounted on a heat spreader (identical to the bottom clam-shell
heat spreader on the M6e), which is then mounted to the xPRESS motherboard. For both
modules, the USB interface is not connected to the MCU, but is accessible though a
micro-A connector. The modules’ GPIO lines are connected to the processor, and