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Altera_Forum's avatar
Altera_Forum
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10 years ago

Filter Error (11999): Channel(s) under reference clocks:

the device 10ax115u3f45e2sge3 have 96 HSSI, but when i use >48, filter error

Error (11999): Channel(s) under reference clocks: are 0 tx channels, 72 rx channels, which exceeds the capacity for the targeted device's HSSI strip, 48 channels.

why?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    You are correct that there are 96 transceivers. However you always must pay attention to the FPGA layout.

    For the Arria 10 that you are using, there are 48 transceivers on the left side and the other 48 are on the right side.

    Transceivers on the left cannot share the same reference clock as transceivers on the right.