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Chapter 12
Constraining the Core
This chapter defines the constraint requirements of the Ethernet
See the Ethernet
Required Constraints
Device, Package, and Speedgrade Selection
The Ethernet
•Device must be large enough to accommodate the core
•Device must contain a sufficient number of IOBs
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•The RocketIO transceiver is only supported in
I/O Location Constraints
No specific I/O location constraints required.
Placement Constraints
No specific placement constraints required.
Virtex-II Pro RocketIO MGTs for 1000BASE-X Constraints
The constraints defined in this section are implemented in the UCF for the example designs delivered with the core. Sections from the UCF are copied into the descriptions in the following sections to serve as examples. These should be studied in conjunction with
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