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BrianSune_Froum's avatar
BrianSune_Froum
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1 month ago

Cyclone 5 SoC FPGA Bank Supply Prerequisite

Dear Altera Support Team, I am not sure this is correct and did not found much info on Handbook. Device 5CSXF6C6U23 CASE 1: BANK 5A 5B only supplied VCCPD to 2.5V and VCCIO is floated. JTAG s...
Configuration
Generic Io
Power
Programmable Logic Device
AqidAyman_Altera's avatar
AqidAyman_Altera
Icon for Regular Contributor rankRegular Contributor
1 month ago

Hi Brian,

 

The Cyclone® V Pin Connection Guidelines state: “Connect these pins (VCCIO) to a power supply” Your test results align with the expectations, where when you left VCCIO floating, it can cause programming failure. For best and safest device hardware configuration, always connect VCCIO to the correct supply for every I/O bank, including BANK 5A/5B.

 

Reference: Cyclone® V GX, GT, E, SX, ST and SE Device Family Pin Connection Guidelines

 

Regards,
Aqid

AqidAyman_Altera's avatar
AqidAyman_Altera
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27 days ago

Hi Brian,


Since you left it as default, can you confirm that you tied those pins pull-up to VCCPGM and not VCCIO5A?

 

Regards,
Aqid

  • BrianSune_Froum's avatar
    BrianSune_Froum
    Icon for Contributor rankContributor
    27 days ago

    AqidAyman_Altera​ 

    You know this is making no sense?

    I suggests Altera staff or actual FAE confirm.
    You are simply guessing and not reading the document.

    Thanks,

    Brian

    • AqidAyman_Altera's avatar
      AqidAyman_Altera
      Icon for Regular Contributor rankRegular Contributor
      24 days ago

      Hi BrianSune_Froum,


      I really apologies if you think my question is not valid.

      I am trying to isolate the issue by getting further confirmation on your setup because I don't have all the details. 

       

      Anyhow, I will try to bring your questions to the internal team to get further confirmation. I will contact you privately on this.

       

      Again, I am sorry for the questions I asked.

       

      Regards,
      Aqid