I came across a strange problem . All of a sudden the board stopped
working, i mean there was no data on serial port. I checked the serial
port using an oscilloscope and found that there was no data on the
port and also i observed that the power input section ic (u1) is
getting heated up. Then i checked all the voltage points as mentioned
in the hardware reference manual and i found two problems
1) there is a voltage drop in VDD_PLL1
(expected - 1.8 v and actual coming is 1.48v)
2) no voltage at VBUS_5V0
The revision of the board that am using is C3.
Please help me ......
Thanks for your time