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how to identify the status of synchronization for ad9739

Question asked by mdilu on Dec 27, 2012
Latest reply on Jan 10, 2013 by danf

I use two ad9739 for synchronization. One is master and the other is slave. The figure 52 in the datasheet on page 35(Rev.B) is taken. I configure the register as the table 32 on page 47 in the datasheet. The readback value of register 0x21 is 0x99 for master and 0x09 for slave, which means both of  the synchronization and Rx controller work well. However, the phase difference between the output signals of the two DACs are not constant for each time.  So I read the  registers of 0x16, 0x17, 0x18 of the master and all of them are zeros for each time. The same thing happens for the slave one. I also read the register 0x1B and find that the SYNCOUT_PH is changed some time for master and it always is zero for the slave. So my question is that if the synchronization component doesnot work in the slave ?