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AWann1's avatar
AWann1
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Cyclone V VCCPD = 1.8V

Hello, I've been given this CCA to program, it contains a Cyclone V, 5CEFA5. The config memory is 1.8V, so the programming bank 3A is set to 1.8V. VCCIO3A is 1.8V, VCCPGM is 1.8V. But, it looks...
NurAiman_M_Intel's avatar
NurAiman_M_Intel
Icon for Super Contributor rankSuper Contributor
3 years ago

Hi,


Apologize for the delay in response.


Per your statement below;

'it looks like VCCPD3A is tied to 1.8V. I know it should be set to 2.5V.'


Please clarify. Do you mean it is set automatically to 1.8V?

Any error message you get?

Can you explain further.


Regards,

Aiman



  • AWann1's avatar
    AWann1
    Icon for Occasional Contributor rankOccasional Contributor
    3 years ago

    In the attached schematic above, you can see there was an error in the connection. The pin VCCPD3A is tied to 1.8V, when, according to the pin connection guidelines PCG-01014-3.2, the PD pins should not be less than 2.5V.

    When I attempt to connect to the FPGA via JTAG, I get a JTAG error. I am wondering if this voltage pin is the reason why. And, if there is anything I can do to get around this.