Part Number:TMS320F28377D
HI TI EE:
TMS320F28377DZWTT XRS Voltage fall to 2.3V
The sch as TI Recommand as bellow:
The real XRS Voltage as bellow CH4 Green waveform
CH2:VDDIO 3.3V CH4:XRS Voltage
When 3.3V Power on,the XRS Voltage follow the VDDIO Voltage,but after about 1.39S,the XRS Voltage fall to about 2.3V while the VDDIO is 3.3V as normal.
Please help to make sure it that phenomenon is normal.
Thank you very much!
BR
Cheney_Sun