The clock IC connected to the REFCLK for PCI-Express in Arria V GT devices can use both HCSL/LVDS, but which is the recommended I/O standard for clocking the FPGA mosquito?
Clock/PLL
PCI Express
Category: PCI-Express®
tool:-
Device: Arria® V
The reference clock I/O standard feeding REFCLK for PCI-Express (PCIe) in Arria V GT devices can be either HCSL or LVDS.
However, HCSL is defined by the PCI-SIG® standard.
Please use HCSL if you want to completely comply with the PCIe standard.
However, there is a track record of operation with LVDS.
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