Stratix IV GX devices have Transceiver Blocks on the left and right. Is it possible, for example, to route the clock input to the Refclk pin of the right transceiver to the left transceiver?
No, I can not.
Stratix IV GX Device handbok, Volume2 Chapter2 p2-8 has the following description.
The ITB clock lines provide input reference clock paths from the refclk pins of one transceiver block to the CMU PLLs and receiver CDRs of other transceiver blocks located on the same side of the device.
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