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TDA2EVM5777: TDA2EVM5777 EVM_3V3_SD

Locust Huang
Prodigy 100 points

Part Number: TDA2EVM5777
Other Parts Discussed in Thread: TDA2

Hello

Why the R823 in TDA2 EVM is no-pop? 

Why the TPD2E001DRL need power supply?

And why shouldn't R823 connect to  EVM_3V3 for continue power for card detection function but EVM_3V3_SD?

Thank you