Thanks Zack for your quick response.
I have checked the registers values of 0x0020,0x0022,0x0023,0x0024~0x0029. but not found any issues.We can read out the digital RSSI value, which varied with input analogue applitude.
BTW, Our system is sole 1.8V power supply with inner LDO used. the board is very similar to Limesdr-mini board. We only use one receiver channel of lms7002m to capture the signal.
I have sent my ini setting to you with e-mail. Could you pls help me to check it?
Thanks very much!