ADLINK Technology cExpress-AL, User Manual

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22
Pinouts and Signal Descriptions
Signal Pin Description I/O PU/PD Comment
SUS_STAT# B18 Indicates imminent suspend operation; used to notify
LPC devices.
O 3.3VSB
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.
O 3.3VSB
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 Not supported.
connected to
SUS_S4#
WAKE0# B66 PCI Express wake up signal. I 3.3VSB PU 10k
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 Not supported.
Connected to
WAKE0#
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* Emulated on
GPIO (BIOS)
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* Emulated on
GPIO (BIOS)
*Note:
PU 47K 3.3VSB supported by project basis, Please contact your local representataive.
3.3.17. 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 4.75-20 V
VCC_5V_S
BY 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, A60,
A66, A70 , A80, A90,
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