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MMWCAS-RF-EVM: Cannot detect that the host IRQ is high after configured master radar using "SingleClip_NonOS_Example".

Part Number: MMWCAS-RF-EVM
Other Parts Discussed in Thread: AWR2243

Hello, TI experts
I am using a FPGA(Xilinx ZCU102) to develop the evaluation board of the cascaded radar. I have customized the adapter board between the two boards and completely implemented "mmWaveLink_SingleClip_NonOS_Example" on the ARM host. I am now using this program to configure the AWR2243 main radar. But after I complete the SOP configuration([SOP3 SOP2 SOP1] = [001]) and release Reset, (I can see the reset indicator LED of the corresponding chip), but I cannot detect that the host IRQ is high, So I get the error "mmWave Device Power on failed for deviceMap 1 with error - 8".
I'd like to ask a few questions here:
1. What are the differences between the configurations of cascaded radar and single chip radar? Can I configure the cascaded radar separately by "SingleClip_NonOS_Example"?
2. Can I use a single chip example program for cascaded radars?
3. If I can, how can I troubleshoot the problem that the host IRQ cannot be raised(I have checked SOP,power and  Reset)?