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3.5.1.7.
Hot Swap HA (High Availability) Signals
Signal
Pin Assignation
BDSEL S2-S5
A15, B15, E15, D19
HEALTHY S2-S4
A16, B16, D17
PCIRST S2-S4
A17, C15, E17
3.5.1.8.
Miscellaneous Signals
Signal
Pin Assignation
PWRBT#
A19
EXT-SMI
B19
PX4-NMI
C19
PWROK-33
E19
3.5.2 J4 Signal Specification
3.5.2.1.
Power Management
Signal
Pin Assignation
I2C:CLK
A1
I2C:DATA
B1
LID
C1
EXTFANFAIL0#
D1
EXTFAN1FAIL1#
E1
SM-BYPASS#
A2
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Description
Board Select, one of the shortest pins (the last to
mate and the first to break contact).
Used to acknowledge the health of the board
Used to indicate the CompactPCI Bus reset signal
Description
ACPI Reserved
System Management Interrupt Input
Non Maskable Interrupt Input
High when 3.3V supply is valid on the board
Description
I2C clock signal
I2C data signal
Reserved
Enclosure fan 0 fail
Enclosure fan 1 fail
Reserved
3-31
Installing the Board
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