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Signal Pin # Description I/O PU/PD Comment

LID# 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# 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)

3.3.18. 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 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. Nominally +3.0V. 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

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Adlink cExpress-BT2 Manual de usuario Pagina 25