Article ID: 000078948 Content Type: Troubleshooting Last Reviewed: 09/03/2012

If JTAG is recommended to be powered by VCCA can I use a separate 2.5V supply instead of VCCA?

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Description

Yes, if the JTAG interface for your device is recommended to be powered by VCCA you may use any other 2.5V power supply as long it is supplying a stable 2.5V.

The reason we recommend using VCCA for JTAG interfaces in some devices is that VCCA is a required supply and will be available if your board does not contain any other 2.5V supplies.

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