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Original question:

AWR1243: AWR1243

AWR1243: AWR1243P 20GHz LO Sync Pins Connectivity

SimonWong
Intellectual 800 points
Part Number: AWR1243

Hi ,

we're going to desgin a cascade system with two XA1243FPBGABL .

Quenstion about connectivity with "AWR1243 Cascade Application Note" :

01、20GHz LO Sync Pins Connectivity : ti recommended 2 conbinations of pins to be used ,however as i know the DFP firmware(v1.2.0) currently only support FM_CW_SYNCIN1 input in cascade mode and for the purpose of easy layout we'd like to connect Master FM_CW_SYNCOUT[D1] to Slave FM_CW_SYNCIN2[D15] and feed back to Master FM_CW_SYNCIN1[B1] . is that ok ? 

02、In this cascade system , can we directly connect SYNC_OUT[P11]/SYNC_IN[N10] and OSC_CLKOUT[A14]/CLKP[E14] without buffer ?

03、3 Transmitters can simultaneously be deployed in AWR1243P device with 1V / LDO bypass and PA LDO disable mode. In this case the peak 1V supply current goes up to 2500 mA.Do you have some power solutioins for this case ?

Best Regards,
Simon