Express-SL/SLE
27
Signal
Pin # Description
I/O
PU/PD
Comment
SUS_S4# A18
Indicates
system is in Suspend to Disk state. Active low output.
O 3.3VSB
SUS_S5#
A24
Indicates system is in Soft Off state.
O 3.3VSB
WAKE0#
B66
PCI Express wake up signal.
I 3.3VSB
PU 1k 3.3VSB
WAKE1#
B67
General purpose wake up signal. May be used to implement wake-up on
PS/2 keyboard or mouse activity.
I 3.3VSB
PU 1k 3.3VSB Connect to
WAKE 0#
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.
I 3.3VSB
PU 10k
3.3VSB
LID#
A103 LID button. Low active signal used by the ACPI operating system for a LID
switch.
I OD
3.3VSB
PU 10k
3.3VSB
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.
I OD
3.3VSB
PU 10K
3.3VSB
3.3.19
Power and Ground
Signal
Pin #
Description
I/O PU/PD
Comment
VCC_12V A104-A109
B104-B109
Primary power input: +12V nominal (wide range 5 ~ 20V).
All available VCC_12V pins on the connector(s) shall be used.
P
8.5~20
V
VCC_5V_SBY B84-B87
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.
P
5Vsb
±5%
VCC_RTC
A47
Real-time clock circuit-power input. Nom3.0V.
P
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
Ground - DC power and signal and AC signal return path.
P
