ADLINK Technology cExpress-KL User Manual page 45

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.
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.
Smart Embedded Management Agent (SEMA)
Exception Code Error Message
0 NOERROR
2 NO_SUSCLK
3 NO_SLP_S5
4 NO_SLP_S4
5 NO_SLP_S3
6 NO_CB_PWRGD
7 BIOS_FAIL
8 RESET_FAIL
9 RESETIN_FAIL
10 CRITICAL_TEMP
11 POWER_FAIL
12 VOLTAGE_FAIL
13 NO_SYS_GD
14 NO_3V3_A_PGD
15 NO_VDDQ_PG
16 NO_P_5V_3V3_S0_PG
17 NO_1V0_A_PG
18 NO_VCORE_PG
Table 9: SEMA Exception Codes
Bit Description
[ 0 ~ 4 ] Exception Code
[ 6 ] 0 = AT mode
1 = ATX mode
[ 7 ] 0 = Standard BIOS
1 = Fail-safe BIOS.
Table 10: SEMA BMC Flags
cExpress-KL
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