cExpress-TL User’s Guide
PICMG COM.0 R3.0
Page 58
Copyright © 2021 ADLINK Technology, Inc.
5.2.
Status LEDs
Status LED’s are mounted on the module to facilitate easier maintenance.
Name
Color
Connection
Function
LED1 Blue BMC
output
Power Sequence Status Code (BMC) Power Changes, RESET (see Exception Codes below)
LED2
Green
Power Source 3Vcc
S0 LED ON
S3/S4/S5 LED OFF
ECO mode LED OFF
LED3 Red
BMC output and same signal as WDT (B27)
on BtB connector
Module power up WD LED = LED OFF
Watchdog counting WD LED = Keep Last State
Watchdog timed out WD LED = LED ON
Watchdog RESET WD LED = LED ON
Rebooted after WD RESET WD LED = LED ON
Rebooted after PWRBTN WD LED = LED OFF
Rebooted after RESET BTN WD LED = LED OFF
Note: only a RESET not initiated by the BMC can clear the WD LED (user action)
LED1
LED2
LED3
