I have a EVAL-HMC1023LP5 and driving it with a HMC6356 USB interface card. This interface card appears slightly different them the one shown in the the photos
The usb interface card is using DLP2232H. https://www.dlpdesign.com/dlp2232h-ds-v11.pdf.
There does not appear to be a SPI output coming from this output header. Do you have a schematic for the HMC6356?
Jumpers on DLP2232H (HMC6356) module should be set as JP1 short, JP2 and JP3.
There may or may not be a solder bridge on the underside of the interface board's header. If there is a solder bridge then there is an important case with the bottom solder on pins of eval board and jumper states which must be definitely avoided. If pin2 and pin3 of JP2 are shorted while the bottom solder is there, DLP2232H breaks. This configuration directs 5V to the GPIO supply of DLP2232H module which exceeds its absolute maximum rating of 3.3V.
Could your interface have been damaged in this way?
There is no solder bridge on the bottom of the card. The unit came with JP1 installed and JP2 and JP3 not installed. The EVAL-HMC1023LP5 is expecting 5V, and is expecting this from the USB buss via it's J10 connector pins 2/4 (I/O supply) and 1 (GND).
Given this what is the correct positions of the JP1,JP2 and Jp3 on the USB interface card.
Could I please get some clarity. You state "JP2 and JP3" what open or closed...you are missing a word here.
JP1 short and JP2/JP3 open. What software are you running with the interface board?
I am using https://www.analog.com/en/design-center/evaluation-hardware-and-software/baseband-programmable-lpf-evaluation-software.html
The target circuit card is a duplicate of the EVAL-HMC1023LP5 with a couple additional parts added.
I managed to dig up an old schematic of an USB interface card and now see that the buffers are supplied by the IO_Supply pin coming from the EVAL-HMC1023LP5. That of course was not clear. There also seems to be a RST pin 11 on the USB interface which is not used on EVAL-HMC1023LP5. Also not really not clear if the new drivers for the DLP-2232H have been tested with the software and a EVAL-HMC1023LP5. There a number of unknowns here.