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AD9361 PRBS/Tone logic not working

Question asked by henry1211 on Mar 22, 2017
Latest reply on Mar 27, 2017 by sripad
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Hi all,

currently we are using AD9361-FMCOMMS3-EBZ to test, firstly we want to verify the DIGIQ interface timing, we want to use PRBS/TONE function of AD9361 for testing RX, and our data clock frequency is 160MHz, LVDS mode, 2T2R, full port mode, and we can measure the DATA_CLK_P/N is 160MHz already after initialize the AD9361 through SPI, but after we config the register 0x3F4 to 0x0b(tone signal) or 0x09(PRBS signal), we can not measure any change for RX_FRAME_P/N, it seems BIST logic not working, is there any other conditions or registers should we config for the AD9361 PRBS BIST test? and the following is AD9361 some key registers value after initializing. 

 

register address:             register value

0x010                                  0xCC              rx_frame pulse mode, 2R2T timing

0x012                                   0x12              LVDS mode, full port

0x013                                   0x01              FDD mode

0x014                                   0x79

0x015                                   0x84

0x017                                   0x1A              calibration done, ENSM is in the FDD state

 

and we keep the Enable and TXNRX pin to low in the test.

 

How to make the PRBS/Tone logic working?

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