Other Parts Discussed in Thread: IWR1642
Hello!
I have a trouble to activate our IWR6843 test module which is composed of IWR6843 boost B'd and RF module.
Basically, the circuit was reviewed and confirmed by TI. The only different point compared with TI's reference circuit is warmRst pull-up resistor is not connected in our module. [ SOP0, 1 are closed, SOP2 is open for a DCA B'd connection]
Is this root cause? The issue is a RS232 connectivity in mmwaveStudio.
And there is no oscillation of a 40MHz crystal on module board.
Each of 1v4_synth and vout_PA is 1.37V and 1.0V. And the 1v4_APLL and VBGAP output are 0V.
This case is very similar with "IWR1642: no crystal oscillation" that I have seen on E2E forum.
However, I couldn't notice the solution to resolve this issue.
Please let me know how to resolve it.
I'm looking forward to hearing from you.
Thank you!
Regards,