I try to use J-Flash to Connect my Test board including with Aducm322.
My Test board power supply is separated into 3.3V for Aducm322 and 1.8V for Macom CDR IC.
I try to use J-Flash(Segger) to connect Aducm322 but some situations fail.
3.3V current consumption: 48mA
1.8V current consumption: 219mA
I list different kinds of conditions and connect result.
(1)power supply=3.3V, connect OK.
(2)power supply=3.3V & 1.8V , connect NOK.
(3)power supply=3.3V & 1.8V CDR at the same time, turn off 1.8V , connect NOK. (3.3V only)
(4)power supply=3.3V, turn on 1.8V CDR , turn off 1.8V , connect OK. (3.3V only)
(5)power supply=3.3V, turn on 1.7V CDR , connect OK.
I feel strange that it generates different results for actions (3) & (4)
I can not see any big different from scope for 1.8V & 3.3V.
Do you provide any direction for me to debug?