ADLINK Technology PXES-2301, Руководство пользователя

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14 Introduction
Leading
EDGE COMPUTING
PXI Express System Controller Slot
The System Controller slot is Slot 1 of the chassis as defined
by the PXI specification. The PXES-2301 chassis can accom-
modate a PXI Express system controller that occupies width up
to 4 slots. As defined in the PXI-5 specification, three controller
expansion slots allow the controller to expand to the left to pre-
vent the controller from using up peripheral slots.
PCI Express Hybrid Peripheral Slots
5 PXI Express hybrid peripheral slots are all connected with
PCIe x4 lanes. Each can accommodate a 3U PXI Express/
Compact PCI Express/hybrid slot compatible with PXI-1/Com-
pact PCI peripheral modules. The hybrid peripheral slots pro-
vide PXI Express functionality (excluding DSTAR and PXI Star)
and 32-bit PXI functionality.
Local Bus
The local bus on a PXI backplane is a daisy-chained bus that
connects each peripheral slot with adjacent peripheral slots to
the left and right. Local bus lines are decreased from 13 to one
(PXI_LBL6 and PXI_LBR6) on a PXI Express backplane. The
remaining local bus line can transmit analog or digital signals
between modules.
Trigger Bus
All six PXES-2301 slots share eight trigger lines, through which
PXI and PXI Express modules can exchange trigger or clock
signals via the trigger bus, allowing precisely timed response to
asynchronous external events the system is monitoring or con-
trolling.
NOTE:
NOTE:
Connector pin assignments of the PXI Express System Con-
troller Slot, PXI Express Hybrid Peripheral Slots, and PXI
Express Peripheral Slots comply with the default pin assign-
ments as defined in PXI-5 PXI Express hardware specification
Rev.1.0.