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BrianSune_Froum's avatar
BrianSune_Froum
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3 months 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
2 months ago

Hi BrianSune_Froum ,

 

As per check in the device pinout file, there are some configuration pins located in BANK 5A, especially the INIT_DONE pin. If INIT_DONE is never asserted, it can cause configuration failure as per my understanding.

 

Regards,
Aqid

  • BrianSune_Froum's avatar
    BrianSune_Froum
    Icon for Contributor rankContributor
    2 months ago

    AqidAyman_Altera​ 

    I am not sure you are Altera staff?

    With basic electronic knowledge I guess open-drain should be easily understood.


    With all do respect:

    "Output OD"

    Disabled

     

    Default:

    Again Output OD:

     

    Again off: Output OD


    So with the project default turned off the possible input function pins that you would like to "guess"

    How could this introduce issue?

    Brian