ADLINK cExpress-BT - Manual (Page 40)

Page 40 cExpress-BT
5.1.4. Exception Codes
In case of an error, the BMC drives a blinking code on the blue Status LED (LED1). The same error code is also reported by the BMC Flags
register. The Exception Code is not stored in the Flash Storage and is cleared when the power is removed. Therefore, a “Clear Exception
Code” command is not needed or supported.
Exception Code Error Message
0 NOERROR
2 NO_SUSCLK
3 NO_SLP_S5
4 NO_SLP_S4
5 NO_SLP_S3
6 BIOS_FAIL
7 RESET_FAIL
8 POWER_FAIL
9 LOW_VIN
10 VCORE
11 VGFX
12 V1P05S
13 VMEM
14 V1P0A
15 V3P3A
16 +P12V_5V
18 CRITICAL_TEMP
19 NO_CB_PWROK
20 NO_HW_PWORK
21 NO_V1P24A_PG
5.1.5. BMC Flags
The BMC Flags register returns the last detected Exception Code since power-up and shows the BIOS in use and the power mode.
Bit Description
[ 0 ~ 4 ] Exception Code
[ 6 ] 0 = AT mode
1 = ATX mode
[ 7 ] 0 = Standard BIOS
1 = Fail-safe BIOS.