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How can I set the attenuation of RX about adrv9009

Category: Software
Product Number: ADRV9009
Software Version: Vivado 2018.3, no-os-2019_r2

Hi Team,

              we are using ADRV9009 with ZC706.And now I wanna set the attenuation of RX not TX.I find the library and I only find a API TALISE_setTxAttenuation to set the TX attenuation. There is not the TALISE_setRxAttenuation API.So I read the ug1295 and I find that there is GainTable about Front-End Attenuator  and Signed Digital Gain/Attenuation but it is so difficult for me to understand it.So Is there any method to control the attenuation  of RX.

Thanks in Advance
Roe