SPI Serializer

I'm using this module to serialize a register to program several HMC792ALP4E.

Simulation

iverilog was used for simulation. It's definitely faster than Vivado. The IP then is moved to Vivado to be appended to a bigger design.

Make sure iverilog is installed. If you are using Ubuntu, it's there in the repository. To start the simulation, run the following:

~$ iverilog -Wall -o output module_tb.v SPI_Serializer.v
~$ vvp -lxt2 output

It will create a test.vcd with all the traces.

Plotting the digital waves

Install GTKwave (It's in your repo if you are using Ubuntu) and then simply do:

~$ gtkwave test.vcd

Diagrams

Here is the simulation output:

and this is a timing diagram from the datasheet: