ThingMagic M6e - Manual (Page 25)

Hardware Interfaces
A D I V I S I O N O F T R I M B L E
Hardware Overview 25
Digital/Power Connector
The digital connector provides power, serial communications signals, shutdown and reset
signals to the M6e module, and access to the GPIO inputs and outputs. These signals are
provided through connector part number: Molex 53261-1571 - 1.25mm pin centers, 1 amp
per pin rating. which mates with Molex housing p/n 51021-1500 with crimps p/n 63811-
0300
. See Cables and Connectors for more information on typical cable parts.
Control Signal Specification
TTL Level UART Interface
The module communicates to a host processor via a TTL logic level UART serial port or
via a USB port. Both ports are accessed on the 15-pin
Digital/Power Connector . The TTL
M6e Digital Connector Signal Definition
Molex
53261-1571
Pin Number
Signal
Signal
Direction
(In/Out of M6e)
Notes
1 GND P/S Return Must connect both GND pins to ground
2 GND P/S Return
3 +5VDC P/S Input Must connect both 5V supplies
4 +5 VDC P/S Input
5 GPIO1 Bi-directional Input 5VDC tolerant, 16mA Source/Sink
6 GPIO2 Bi-directional
7 GPIO3 Bi-directional
8 GPIO4 Bi-directional
9 UART_RX_TTL In In (Pull-down with +10k Ohm to Ground)
10 UART_TX_TTL Out Out
11 USB_DM Bi-directional USB Data (D-) signal
12 USB_DP Bi-directional USB Data (D+) signal
13 USB_5VSENSE In Input 5V to tell module to talk on USB
14 SHUTDOWN In Pull LOW to enable module. Set HIGH to dis-
able all 5V Inputs and shutdown module.
15 RESET Bi-directional HIGH output indicates Boot Loader is running
LOW output indicates Application Firmware is
running
Note: Not 5V tolerant.