When we debug the AM1802,the power sequence is 1.2V->1.8v->3.3V.When the 1.2V power up,we can test a 1.3V on 3.3V power pin. We disconnect the 3.3V power,the 1.3V still
exist.Remove all the outside devices except the DDR,the 1.3V still on the pin.
6646.AM1802-CPU-SCH.pdf
Hi Fisher
The field team has escalated this issue internally and we are looking at it.
Can you confirm that following
1) When you say you disconnect 3.3V , can you elaborate what you meant by this, did you remove discrete power ic that sources 3.3V?
2) Are you suspecting the AM1802 driving a 1.3V on the 3.3V supply?
3) When you say you removed all components , can you reconfirm that the only thing remaining on the board was the AM1802 and DDR memory?
4) Do you see a 1.3V on the 3.3V power pins only , or do you also see any voltage level on the 1.8V supply also?
Regards
Mukul
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