Use PLL CLKOUT pins as regular I/O pins in Stratix 10

[Wujun]

Hello,

Can I use PLL_2C_CLKOUT0n and PLL_2C_CLKOUT0p,PLL_2C_CLKOUT0,PLL_2C_FB0 as regular I/O pins in Stratix 10?

Refer to the Pin list of 1sg280es UF50, they are IO function, and PLL CLKOUT are optional function. So I think they can treat as regular I/O pins?

Regards,

[Rahul_S_Intel1]

Hi,

Please note the above pins can be used as I/O or dedicated clock signals . Please refer the page no: 5 of the pin connection guidelines.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/stratix-10/pcg-01020.pdf

Regards,

RS

[Wujun]

Hi,

Thank you for your explanation.

Page no 5 has a description about PLL_2C_CLKOUT0,PLL_2C_FB0, and it can be treated as I/O. Page no 6 has a description about PLL_2C_CLKOUT0n, but it says "can be used as two single-ended clock output pins or one differential clock output pair." Does PLL_2C_CLKOUT0n cannot be treated as a single-ended input pins?

[Rahul_S_Intel1]

Hi Wujun,

Apology for the confusions, the sentence only meant that the pin have the capability to use as an single ended and as differential ended signals. That means to say PLL_2C_CLKOUT0 pin pair ( p and n) can be used as differential pair signals. and Individually can be used as single ended signals.

PLL_2C_CLKOUT0p one signal

PLL_2C_CLKOUT0n another signal

Hope it clarifies.

Regards,

Rs

[Wujun]

Hi RSree

Thank you. I made a typo, and actually I wanted to ask “Does PLL_2C_CLKOUT0n cannot be treated as a single-ended input pins?” Anyway, these two pins can be treated as two single ended I/O signals.