JYTEK PXI-62700, Руководство пользователя

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3 Backplane Overview
3�1 CompactPCI Compatibility
The PXI-62700 backplane cBX-3018L is compatible with PXI-compatible products and
standard CompactPCI products.
The signals on the P1 connector of the backplane meet the requirements of the CompactPCI
specification for both the peripheral and system modules.
The PXI-specific signals are located on P2. Only the signals that are reserved or not used
in the CompactPCI 64-bit specification are found on PXI-specific signals. Therefore, all
modules that meet the requirements of the CompactPCI 64-bit specification will function
in the PXI-62700.
3�2 System Controller Slot
The System Controller slot is Slot 1 of the chassis as defined by the PXI specification. It has
three controller expansion slots, which are used for system controller modules that are
wider than one slot. As defined in the PXI specification, these slots allow the controller to
expand to the left to prevent the controller from using up peripheral slots.
3�3 Star Trigger Slot
The Star Trigger (ST) slot is Slot 2. This slot has a dedicated trigger line between itself and
slots 3-15 is intended for modules with ST functionality that can provide individual triggers
to the peripherals.
3�4 Peripheral Slots
There are 17 peripheral slots including the Star Trigger controller slot.
3�5 Local Bus
The local bus of PXI backplane cBX-3018L is a daisy-chained bus that connects each
peripheral slot with its adjacent peripheral slots to the left and right. Each local bus is 13
lines wide and can pass analog signals between modules or provide a high-speed side-band
communication path that does not affect the PXI bandwidth.
In accordance with the PXI specification, the local bus connections between all slots except
slots 1 and 2.
3�6 Trigger Bus
JYTEK PXI-62700 has three PXI separate trigger bus segments. The PXI trigger bus is divided
into three separate trigger bus at these locations. The trigger bus divisions represented by