EKF PC7-FESTIVAL, User Manual

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User Guide • PC7-FESTIVAL • CompactPCI® PlusIO CPU Board
1) Various PCI control signals pulled up with 1kOhm to V(I/O). This resistor value is specified for +5V V(I/O) but
works as well with +3.3V V(I/O) under all environments which have been tested by EKF. On request, 2.7kOhm
P/U resistors can be stuffed.
2) GA pins and some other signals are not connected
3) SYSEN# is pulled up with 10kOhm to +3.3V
4) Signals terminated by P/U resistors, but not in use
5) PPS (pulse per second) and PPM (pulse per minute) as defined by IEEE 1588. These signals are derived from
NIC1 (I210IT), and must be enabled by GPIO27 of the APL-I SoC, since this feature is EKF proprietary.
According to the CompactPCI® Serial specification the SGPIO pins (i.e. PPM/PPS when enabled) are distributed
via the CompactPCI® Serial backplane, and therefore can be used on a suitable peripheral card for triggering
events. If a CompactPCI® Serial peripheral card makes use of the SGPIO sideband signals, the PPS/PPM signals
should be disabled on the PC7-FESTIVAL.
6) As an exclusive stuffing option J2-C15 can be utilised as PSON# output
7) PRST# is pulled up with 1kOhm to +3.3V. This is normally an input, for optional connection to a push button
(manual reset actuator). As an option, this pin may be reconfigured as RST# output (platform reset). This will
be required for applications which address PCI Express® peripheral devices only via the rear I/O backplane
connector J2, e.g. RIO modules. A similar situation arises as result of an optional PC7-FESTIVAL stand-alone
configuration, where the backplane connector J1 has been replaced by a +5V terminal block. While J1 is
present, RST# would be available on pin J1 C5. Without J1 however, the RST# output must be derived from J2
C17 as an alternate. Hence, if J1 is not populated on the PC7-FESTIVAL, backplane slots which are based on
PCI Express® (typically configured according to CompactPCI® Serial) must be connected to J2/P2 C17 as
platform reset.
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