Compile Error when using one inclock for SERDES IPs in different I/O banks

[Jens]

Hi,

I'm using a Arria 10AX048H4F34E3SG device for interfacing an image sensor. The serial LVDS data channels from sensor are connected to 6 I/O banks. The serial data clock is just within one I/O bank. I have 6 SERDES IPs instantiated which should use this clock as inclock. The Quartus Fitter generates this error for the channels which are not in the same I/O bank like the clock:

Error (175006): Could not find path between source IOPLL and the LVDS_CHANNEL

Is there any option to avoid this error?

I tried using an external PLL for the SERDES but it produces the same error.

Jens

[AminT_Intel]

Hello Jens,

You might get this error because LVDS IOPLL clock is driven across multiple banks in Arria 10. 

All RX channels need to be in one I/O bank and each I/O bank can support up to 24 channels for LVDS SERDES IP Core Functional Modes.

You can refer to page 4, 13, 31 and 37 document on this link: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_altera_lvds.pdf

I hope this answer helps.