Power And Ground - ADLINK Technology COM Express Express-BL User Manual

Signal Pin # Description
SUS_STAT# B18 Indicates imminent suspend operation; used to notify LPC devices.
SUS_S3# A15 Indicates system is in Suspend to RAM state. Active-low output. An inverted
copy of SUS_S3# on the carrier board (also known as "PS_ON") may be
used to enable the non-standby power on a typical ATX power supply.
SUS_S4# A18 Indicates system is in Suspend to Disk state. Active low output.
SUS_S5# A24 Indicates system is in Soft Off state.
WAKE0# B66 PCI Express wake up signal.
WAKE1# B67 General purpose wake up signal. May be used to implement wake-up on
PS/2 keyboard or mouse activity.
BATLOW# A27 Battery low input. This signal may be driven low by external circuitry to
signal that the system battery is low, or may be used to signal some other
external power-management event.
LID# A103 LID button. Low active signal used by the ACPI operating system for a LID
switch.
SLEEP# B103 Sleep button. Low active signal used by the ACPI operating system to bring
the system to sleep state or to wake it up again.

3.3.19. Power and Ground

Signal Pin #
VCC_12V A104-A109
B104-B109
VCC_5V_SBY B84-B87
VCC_RTC A47
GND A1, A11, A21, A31, A41, A51,
A57, A66, A80, A90, A96, A100,
A110, B1, B11, B21,B31, B41,
B51, B60, B70, B80, B90, B100,
B110
Description
Primary power input: +12V nominal (wide range 5 ~ 20V).
All available VCC_12V pins on the connector(s) shall be used.
Standby power input: +5.0V nominal. See section 7 "Electrical
Specifications" for allowable input range. If VCC5_SBY is used,
all available VCC_5V_SBY pins on the connector(s) shall be
used. Only used for standby and suspend functions. May be left
unconnected if these functions are not used in the system design.
Real-time clock circuit-power input. Nominally +3.0V.
Ground - DC power and signal and AC signal return path.
I/O PU/PD Comment
O 3.3VSB
O 3.3VSB
O 3.3VSB
O 3.3VSB
I 3.3VSB PU 10k
3.3VSB
I 3.3VSB PU 10k
3.3VSB
I 3.3VSB PU 8.2k
3.3VSB
I OD PU 10k Emulated on
3.3VSB 3.3VSB GPIO (BIOS)
I OD PU 10K Emulated on
3.3VSB 3.3VSB GPIO (BIOS)
I/O PU/PD Comment
P 8.5~20 V
P 5Vsb ±5%
P
P
Express-BL
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