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AD9361 RX channel  test,I receive data is correct, Q  receive data is wrong

Question asked by rf2685 on Mar 15, 2015


I'm working with the AD9361 with LVDS,FDD,Transmission channel test signal spectrum is correct。

Test receive channel,I'm using the AD9361 BIST data looopback (Tx data -> Rx data).Reg. set up: 0x3F4=0x00; 0x3F5=0x41;0x3F6=0x00 in order to achieve alignment I'm changing the Tx and Rx delay (Reg 0x006, 0x007).No matter how I debug time delay(Reg 006,007) there is always a way receive data is wrong, either I or Q。

What reason is this?