8-Slot NI PXIe-1062Q Backplane Installation Guide
4
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System Timing Slot
The system timing slot is slot 4. The system timing slot accepts the
following peripheral modules:
•
A PXI Express system timing module with a x4 or x1 PCI Express link
to the system slot.
•
A PXI Express peripheral with a x4 or x1 PCI Express link to the
system slot.
•
A CompactPCI Express Type-2 peripheral with a x4 or x1 PCI Express
link to the system slot.
The system timing slot has three dedicated differential pairs
(PXIe_DSTAR) connected from the TP2 connector to the XP3 connector
for each hybrid peripheral slot, as well as routed back to the XP3 connector
of the system timing slot, as shown in Figure 2. You can use the
PXIe_DSTAR pairs for high-speed triggering, synchronization, and
clocking. Refer to the
PXI Express Specification
for details.
The system timing slot also has a single-ended (PXI Star) trigger connected
to every slot. Refer to Figure 2 for details.
The system timing slot has a pin (PXI_CLK10_IN) through which a system
timing module can source a 10 MHz clock to which the backplane
phase-locks. Refer to the
section for details.
The system timing slot has a pin (PXIe_SYNC_CTRL) through which a
system timing module can control the PXIe_SYNC100 timing. Refer to the
PXI Express Specification
and the
section for details.
