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TerraX's avatar
TerraX
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4 years ago
Solved

Cyclone V - Differential Pair Pin Assignment 1.5V PCML fitter error

When creating a new Quartus project similar to a demo example, I am trying to place XCVR pins in a blank project and getting an error from the 1.5V PMCL differential pins (HSMC_GXB_RX_p0 and HSMC_GXB...
  • Kshitij_Intel's avatar
    Kshitij_Intel
    4 years ago

    Hi Terra,


    I have told you earlier, you cannot directly connect, Please design custom logic to reconstruct the word. First correct your design then try to compile.


    Thank you

    Kshitij Goel


TerraX's avatar
TerraX
Icon for New Contributor rankNew Contributor
4 years ago

So I should:

1. Instantiate SDI_II as Receiver only, Do I need to include the Protocol option?

2. Instantiate SDI_II as Transmitter only, Do I need to include the Protocol option?

3. Instantiate Intel_PLL as Fractional, 1 Output Clk, Frequency 74.25MHz.

4. Create Logic block to glue the rx_dataout[19..0] to the tx inputs: tx_datain[19..0], tx_datain_valid, tx_dataout_valid.

5. Connect the REFCLK_p0 to xcvr_refclk for the Receiver.

6. Connect the same REFCLK_p0 to the xcvr_refclk for the Transmitter.

7. Connect the PLL 74.25MHz clock to both the Receiver and the Transmitter and the Glue Logic Block.

Sound right?

Sincerely,

Terra