RadiSys EPC-5A, Справочное руководство по аппаратному и программному обеспечению

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EPC-5A Hardware & Software Reference Manual
Page 8
2 2
Slot-1 Controller
Jumper
P1
P2
Front
Panel
JP1
Jumpers
Figure 2-1. Slot-1 Jumper Location.
Additionally, the EPC-5A has another jumper (see Figure 2-1 above) that rarely needs
to be changed - the MODID jumper on JP1. The EPC-5A uses pin 30, Row A of the
P2 connector for module identification. If the J2 backplane is other than a standard
VME or VXI backplane (e.g., a VSB backplane) or Pin 30, Row A is defined for
another purpose, remove this jumper.
Selecting the EPC-5A Slot Location
There are two main considerations in determining where the EPC-5A should be
positioned in the chassis.
•
When used as a Slot-1 controller, and per the VMEbus specification (Rule
3.3), a Slot-1 controller must be in Slot 1. All other boards must be to the
right of the Slot-1 controller.
•
The EPC-5A connects to its peripherals via a subplane which extends to the
right of the EPC-5A. Make sure that the location you choose provides
sufficient room for all the attached peripherals (EXMs and mass storage
module).