12048321 Rev. 01 (Draft)
67
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5.5. System-State Status LEDs
RefDes
PCB
Silkscreen
Marking
Color Signal / Function
Signal Description
D62
3V3
(STBY)
red
CB_STBY_3V3#
(SUS_S3#)
LED active when SMARC module is NOT in S0 state
D57
CBON
green
CB_PWR_ON_3V3
(SUS_S5#)
LED active when SMARC carrier-board is powered on
D64
PGS5
green PG_V_S5
LED active when all voltages of S5 power domain are active
and within their specified range
D65
PGS0
green PG_V_S0
LED active when all voltages of S0 power domain are active
and within their specified range
D66
VVBO
green PG_V_VBO
LED active when all voltages of the V-by-One function-block
are active and within their specified range
Note D62: there is an error in the printed PCB silkscreen information of D62. The marking will be corrected to
“STBY” in
the next PCB revision.
5.6. M.2 and SATA-Activity LEDs
RefDes
PCB
Silkscreen
Marking
Color Signal / Function
Signal Description
D10
M2A
red LED_1# of M.2 Key-A Depending on used M.2 card
D11
M2B
red
LED_1# of M.2 Key-B Depending on used M.2 card
D81
SAct
red SMARC_SATA_ACT# LED blinks on activity at the SATA interface
5.7. USB Type-C Status LEDs
RefDes
PCB
Silkscreen
Marking
Color Signal / Function
Signal Description
D73
TC_5V
green USBC_PDO0
LED active when the USB Type-C connector-voltage is 5.0V
D72
TC_9V
green USBC_PDO1
LED active when the USB Type-C connector-voltage is 9.0V
D75
TC_15V
green USBC_PDO2
LED active when the USB Type-C connector-voltage is 15.0V
D74
TC_20V
green USBC_PDO3
LED active when the USB Type-C connector-voltage is 20.0V
D76
TC_CTL1
green USBC_MUX_CTL1
LED active when CTL1 pin of the USB Type-C port multiplexer is
high;
Refer to configuration-scheme according to chapter "USB Type-
C Port Controller"
D77
TC_FLP
green USBC_MUX_FLIP
LED active when the USB Type-C controller detects a device
plugged in flipped mode. Refer to configuration-scheme
according to chapter "USB Type-C Port Controller"
D78
TC_TCL0
green USBC_MUX_CTL0
LED active when CTL0 pin of the USB Type-C port multiplexer is
high;
Refer to configuration-scheme according to chapter "USB Type-
C Port Controller"