Inova High Performance CPU board ICP-PII - Manual (Page 44)

©2002 Inova Computers GmbH Page 3-10 Doc. PD00581013.004
Interfaces ICP-PIII
3.1 CompactPCI Backplane
The form factor defined for CompactPCI boards is based upon the Euro-card industry standard.
Both 3U (100 mm by 160 mm) and 6U (233 mm by 100 mm) board sizes are defined. A Com-
pactPCI system is composed of up to eight CompactPCI cards. The CompactPCI backplane con-
sists of one System Slot, and up to seven Peripheral Slots.
The System Slot provides arbitration, clock distribution, and reset functions for all boards on the
bus. The System Slot is responsible for performing system initialization by managing each local
board’s IDSEL signal.
Physically, the System Slot may be located at either end of the backplane but Inova have placed
theirs on the right to cater for physical expansion due to heat-sink, hard disk, extended function-
ality etc. The Peripheral Slots may contain simple boards, intelligent slaves, or PCI bus masters.
Note:
Inova’s 3U CompactPCI CPU boards
can be used as either master or slave
boards i.e. occupying either the system
slot or the peripheral slot. The choice
of PCI/PCI bridge (multiprocessing or
standard) decides which of the slots is
used.