2-10
Themis Computer
PMC/XMC Carrier Board Manual
2.2.3
2P2 PMC/XMC Module Slots
The
2P2 PMC/XMC Carrier Board supports a combination of two PMC Module
slots (to support vendor-specific, 32/64-bit, 66-MHz, PMC expansion Modules) and
two XMC Module slots. Each XMC module slot provides x4 PCI Express. (See
Table 1
on page xii for a list of processor boards that support XMC modules.)
2.2.3.1 PMC Module Slots
In addition to the standard I/O, 64 bits of configurable user I/O are provided from the
VME P2 connector directly to the PMC 1 and PMC 2 Module slot positions. All 64
bits can be routed to PMC 1, leaving 0 bits of user I/O for PMC 2. Alternatively,
32 bits can be routed to PMC 1 and 32 bits to PMC 2. In the latter case, PMC 1 will
utilize the upper VME P2 signals—VME P2 A[32..17] and VME P2 C[32..17]—
while PMC 2 will utilize the lower VME P2 signals—VME P2 A[16..1] and VME
P2 C[16..1]. The signals are available on the J14_PMC1 connector of PMC slot 1
and the J14_PMC2 connector of PMC slot 2. If all 64 bits of user I/O are routed to
PMC slot 1, it utilizes all 64 signals of the VME P2 connector. In this case, all 64
signals are available on the J14_PMC1 connector of PMC slot 1.
This section provides the pinouts of the PMC user I/O signals that can be brought
from PMC Module
Slot 1
and
Slot 2
to the VME P2 connector of the 2P2
PMC/XMC Carrier Board.
Note:
User I/O is directed to PMC 1 and PMC 2 Modules through solder-bead
configurations (see
Table 2-11
on page 2-26).
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