Other Parts Discussed in Thread: LMX2581
I have connected the LMX2581EVM to a Xilinx ZCU102 UltraScale board. I am able to write messages through
the standard Linux SPI interface to the LMX2581 and configure the synthesizer. But I am having difficulty reading back
the part ID and the registers. I have followed the instructions on readback to use the MUXout_Select and wired the
MUXout pin to LE. I also read with CS high from Linux. I have tried different sequences but have not been able to read
back the data I want. Has anyone done this successfully, from Linux or other SPI masters? Can someone show me
a working example of the sequence of messages to send to the LMX2581 in order to read the part ID? The part ID is
supposed to be one of these sequences: 0x00000500, 0x00000510, 0x00000520, 0x00000530. In my attempts, I always
read back 0x00000280 after sending my message sequence.
Thanks,
TW