List of Messages |
CAUSE: The fitter attempted to place the specified fast PLL, which has the specified differential I/O data rate. However, the target device with the specified speed grade can support only the specified minimum differential I/O data rate. As a result, the fitter cannot place the fast PLL.
ACTION: You must either modify the design so that the differential I/O data rate is greater than or equal to the specified minimum differential I/O data rate for the target device of the specified speed grade, or select a device with a faster speed grade.
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