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Altera_Forum's avatar
Altera_Forum
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15 years ago

Please, help with sdi-receiver (Altera SDI-MegaCore)

hello,

I use HD-SDI receiver block in ArriaGX 20CF484C6.

Operations:

- MegaWizard Plug-In Manager - Altera SDI MegaCore function v11.0;

- Protocol Options: HD-SDI 3G Receiver;

- Transceiver Options: Generate transceiver and protocol block; stating channel number: 0;

After compilation the QuartusII (version 11) reports following messages:

"Critical Warning: GXB Central Management Unit (CMU) Sdi_Soft:Sdi|verilog_sdi_rxu:rxu|…|alt2gxb:alt2gxb_component|channel_quad[0].cent_unit is not connected to a GXB_RECONFIG logic block, but the dprio reconfiguration feature requires that you must connect the gxb cmu to a gxb_reconfig logic block"

«Critical Warning: Output port reconfig_fromgxb of alt2gxb megafunction containing CMU atom "Sdi_Soft:Sdi|verilog_sdi_rxu:rxu|…|alt2gxb:alt2gxb_component|channel_quad[0].cent_unit" in channel reconfiguration mode or channel and tx pll select reconfig mode must be connected to alt2gxb_reconfig megafunction»

Who works with Altera SDI-Megacore Function, please, help.

As I understand, in my case I have no need to use transceiver dynamic reconfiguration. But don't know, how to disable this "Channel Reconfiguration mode". How to solve this problem and run HD-receiver?

I would be grateful if you would help me.

Thank you

2 Replies

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

    --- Quote Start ---

    Hi, you need to connect to reconfig controller as stated in this solution.

    --- Quote End ---

    "for stratix® ii gx or arria® gx devices, if the transceiver quad doesn't use reconfiguration, you can leave sdi_reconfig_clk, sdi_reconfig_togxb, sdi_reconfig_fromgxb unconnected" - but QII reports critical warnings

    Who knows, can i use Cyclone's IV principles with Arria GX:

    - can i connect ALTGX and ALTGX_RECONFIG in Channel Reconfiguration mode as it images on Figure 3-10 (Cyclone IV Dynamic Reconfiguration. Cyclone IV Device Handbook)

    - or use Offset Cancellation Feature - Figure 3-2 (Cyclone IV Dynamic Reconfiguration. Cyclone IV Device Handbook)

    sorry, i am unable to post links or images now.