Cyclone V GX using all 6 transceivers in both directions

As I read the literature, I should be able to source a fPLL from one of the RefClk inputs in the transceiver banks, and then use this fPLL to source all transmitters. All channel CMU PLLs are to be used as CDR PLLs.

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Transmitter PLL

In Cyclone V GX/GT/SX/ST devices, there are two transmitter PLL sources: CMU PLL (channel PLL) and

fPLL. The channel PLL can be used as CMU PLL to clock the transceivers or as clock data recovery (CDR)

PLL.

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Is this possible?