Could the refclk_1 of Cyclone IV GX (EP4CGX50CF23I7) be input refclk of transceiver?

Hi, all: I'm using Cyclone IV GX (EP4CGX50CF23I7) to design some SerDes project. When I assign the refclk_1 pin (BANK 3B, REFCLK_1 , M8、N8) to the pll_clkin of transceiver, it can'...