Hi, Im Juan.
I need to program the AD9576 via SPI, so I have set pins 22 and 49 high for this purpose. For the configuration of the registers I have used the ACE software, I have selected the reference correctly (ref1 = CMOS 200 MHz) and the outputs enabled but still nothing is displayed at the output. My biggest doubt is that the instruction word is not being sent correctly. My method is to configure the single instruction first through register 0x001 (SPI configuration B) and then update through register 0x00F (I/O update) and start sending address followed by data. It is worth mentioning that I do this by sending 8 byte packets and I don't know if this is a problem. I would like to know if there is a bug in this communication method.
Juan Camilo Peña A.