TMS320F280049: Launchpad schematic

Shengnan Li

Expert 1010 points

Part Number: TMS320F280049

I am referencing the lauchpad schematic, for Vregenz pin, it is connected to both 3.3 and 0V? why?

0 Kevin Allen18 over 4 years ago

Hi Shengnan Li,

VREGENZ is connected to GND by default to enable the internal VREG. R11 is DNP by default for variant 001, which is what's used during production.

You can see this in the generated schematic PDF. In Altium you'll need to select the 001 variant where R11 is configured is "not fitted".

Best,

Kevin

0 Shengnan Li over 4 years ago in reply to Kevin Allen18

Expert 1010 points

how to select variant 001 in altium designer?

Thank you!

+1 Kevin Allen18 over 4 years ago in reply to Shengnan Li

Right click the 001 variant and select "Set as current".

You then need to select the tab below to see the DNP components in the schematic view. The normal editor view doesn't seem to show them.

Best,

Kevin

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