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Why IQ is swapped when framer input loopback to deframer output by setting 0x667c[D4]=1?

Category: Software
Product Number: ADRV9029
Software Version: SW 6.0.0.41

Why IQ is swapped when framer input loopback to deframer output by setting 0x667c[D4]=1?

SG output 735MHz CW, inject to 9025 RX(RX LO is 733MHz),BB get +2MHz CW.

setting 0x667c[D4]=1.

I see 9025 TX output is 786MHz CW(TX LO is 788MHz), DAC input is -2MHz CW?

Is it that IQ is swapped when framer input loopback to deframer output by setting 0x667c[D4]=1?


How can i do that IQ is not swapped when framer input loopback to deframer output?

please help me
Please let me out.
Thanks in advance.

  • How can i do that IQ is not swapped when framer input loopback to deframer output?

    You can avoid the IQ swapping when framer input loopback to deframer output by swapping the framer input lanes as shown in below example usecase. 

    Is it that IQ is swapped when framer input loopback to deframer output by setting 0x667c[D4]=1?

    Yes, IQ is swapped when framer to deframer loop backed which is not expected. We are working on this. You can use the above modification only for framer to deframer loopback testing as of now. Hope this is not a blocker for your testing because this loopback testing is for debug purpose only.