SC6-TANGO • CompactPC® Serial • Intel® Atom™ E39xx Processor (APL-I SoC)
Hot Swap Detection
The CompactPCI® specification added the signal ENUM# to the PCI bus to allow board hot
swapping. This signal is routed to a GPIO (ISH GPIO7 APL-I SoC).
An interrupt can be requested, if ENUM# changes, caused by insertion or removal of a peripheral
board.
Note that the SC6-TANGO itself is not a hot swap device, because it makes no sense to remove the
system controller from a CompactPCI® system. However, it is capable to recognize the hot swap
of peripheral boards and to start software that is performing any necessary system
reconfiguration.
Power Supply Status (PWR_FAIL#)
Power supply failures may be detected before the system crashes down by monitoring the signal
FAL#. These active low lines are additions to the CompactPCI® specification and may be driven by
the power supply. FAL# there possible failure. On the SC6-TANGO DEG# is pulled to VCC and FAL#
is routed to APL-I SoC GPIO17.
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