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Altera_Forum
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8 years ago

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'...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

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I had already tried that before I post this question.

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hello, I have encountered the same problem. The board design only have REFCLK1 and REFCLK4. But it seems that I can only use REFCLK2 and REFCLK3 in cyclone iv GX device. So I am very curious have you ever solved this problem???