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6478 Discussions

VCC pin connection of JTAG chain

VHou0
Beginner
‎06-22-2020 08:57 AM
1,118 Views

The red box in the figure below recommends that we connect the VCC of the download cable to 2.5V.

If we connect the VCC of the download cable to 3.3V and provide clamping diodes between the FPGA and JTAG as shown in the below , is it feasible?

cyclone10.PNG

Doenload cable.png

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VHou0
Beginner
‎06-22-2020 09:08 AM
1,114 Views

Hi Support team,

Our current connection is show below.

 

Doenload cable.png

 

Thanks in advance.

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ShafiqY_Intel
Employee
‎08-24-2020 05:19 AM
1,083 Views
In response to VHou0

Hi VHou0,

 

We recommend to power up the VCC of the download cable with a 2.5-V supply from VCCA.

Other than this value, we are not recommend and you can try use other value on your own risk.

Thanks.

 

Regards,

Matt

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