Cyclone V: PCIe x4 + XAUI.

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Hello!

I have 5CSXFC6D6F31C6.

Can I use PCIe x4 and XAUI simultaneously?

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According to the handbook, I came to the conclusion that answer is no.

Device has nine channels.

PCIe x4 requires all ( 3 ) channels fron GXB_L0 ( Сh0 - Ch2 ) and 1 channel from GXB_L1 ( Ch3 ). Also, one channel ( Ch4 ) from GXB_L1 is needed as CMU PLL.

XAUI requires all ( 3 ) channels from GXB_L2 ( Ch6 - Ch8 ), 1 channel from GXB_L1 ( Ch5 ). And also need channel for CMU PLL. But we have not left channels.

Am I wrong?

Cyclone V support FPLL as TX PLL feature.

Maybe you can use 1 of the FPLL to create 1.5625GHz Fast clock for XAUI? :p

Please check for the datasheet what is the MAX frequency the FPLL can support?

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Cyclone V support FPLL as TX PLL feature.

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Yes, in the "Upcoming Cyclone V Device Features" it is written that

"PMA clock output (fPLL as transmit PLL)" is currently supported.

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Please check for the datasheet what is the MAX frequency the FPLL can support?

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Yes, fPLL Serial Data Range is from 0.611 Gbps to 3.125 Gbps.

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Maybe you can use 1 of the FPLL to create 1.5625GHz Fast clock for XAUI? :p

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The most important question is how to make it? :)

When I am generating XAUI Megacore function I can choose only CMU PLL type.

I'm not sure you are using which QII version.

In CV Native PHY GUI, you should enable the "Use external PLL" option if you want to use fPLL a transmit PLL feature.

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I'm not sure you are using which QII version.

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Sorry, I am using QII 13.0.0 Build 156.

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In CV Native PHY GUI, you should enable the "Use external PLL" option if you want to use fPLL a transmit PLL feature.

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Unfortunately, there is no such option In "XAUI PHY v13.0" and "Cyclone V Hard IP for PCI Express v13.0" Megacore functions.

Oops...I'm not aware of you are using megawizard XAUI soft IP.

Unfortunately, you not able to use this option unless you build your own XAUI IP by using native phy ip.

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Oops...I'm not aware of you are using megawizard XAUI soft IP.

Unfortunately, you not able to use this option unless you build your own XAUI IP by using native phy ip.

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Thank you! Is there a guide, which describes how to set up a Native PHY in XAUI mode?

Basically, Native Phy is just a transceiver/Physical layer used in XAUI protocol.

In order to fully compliance the XAUI protocol, you need to write a a soft logic such as deskew fifo to compensate the lane skews, rate matcher to compensate the ppm difference and other blocks that required by XAUI protocol.