User Guide CC9-SAMBA •
CompactPCI®
Pentium M CPU Board
© EKF -32- ekf.com
Power Supply Status (DEG#, FAL#)
Power supply failures may be detected before the system crashes down by monitoring the signals
DEG# or FAL#. These active low lines are additions of the
CompactPCI
specification and may be
driven by the power supply. DEG# signals the degrading of the supply voltages, FAL# there possible
failure. On the CC9-SAMBA FAL# is routed to the GPI6 and DEG# to the GPI7 of the ICH4.
PXI Trigger Signals
As an option, the CC9-SAMBA supports four of the eight trigger signals of the PXI standard, as
defined by National Instruments. The trigger signals are provided by the local SIO (Super-I/O) chip
IT8761E. GPIO20/21 are routed to TRIG0/1, and GPIO26/27 are used to control TRIG6/7. These signals
can also be used as GPIO lines in a non-PXI environment.
Local GPIO Option
In addition to the GPIO / PXI-Trigger lines optionally available on J2, the expansion connector PEXP
provides another two GPIO lines available for user specific application. The 5V TTL signals
sio_gpio16/17 are controlled by the on-board SIO IT8761E, with an internal 50k
Ω
PU resistor and
capable of sinking 24mA each.
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