User's Manual l TQMxE39S UM 0101 l © 2019 TQ-Group
Page 14
3.6.3
Debug Module LED
The TQMxE39S includes a dual colour LED providing boot and BIOS information.
The following table shows some LED boot messages.
Table 8:
LED Boot Messages
Red LED
Green LED
Remark
ON
OFF
Power supply error
ON
ON
S4/S5 state
BLINKING
BLINKING
S3 state
OFF
BLINKING
uEFI BIOS is booting
OFF
ON
uEFI BIOS boot is finished
3.7
SMARC Connector Pinout List
This section describes the TQMxE39S SMARC connector pin assignment, which is compliant with the SMARC hardware
specification Version 2.0.
3.7.1
Signal Assignment Abbreviations
Table 9 lists the abbreviations used in Table 10.
Table 9:
Abbreviations used
Abbreviation
Description
GND
Ground
PWR
Power
I
Input
I PU
Input with pull-up resistor
I PD
Input with pull-down resistor
O
Output
OD
Open drain output
IO
Bi-directional
Note: Unused signals on the carrier board
If the input signals at the SMARC connector are not used, these signals can be left open on the carrier
board, since these signals have a termination on the TQMxE39S.
