Channel simulation： SPI channel with clock (dual speed transmitters)

Dear colleagues,

I am making a simulation of a 3-wire SPI serial channel (SCLK, MISO, MOSI)at 50MHz through a PCB, connected to a DUT, which is modelled through a SPICE model. I haveADS 2017.

I used the ChannelSimulation, with a TX, and a xTlk in order to simulate the MOSI, and the SCLK channels.

I am interested in the signal quality (eye diagram) of the MOSI at the SPICE model of my DUT in the PCB.

I was able to perform the simulation, however I have a problem regarding the clock.

I set the TX component to 50Mbps, however the xTlk cannot be set to send "01" with a speed of 100Mbps required to generate the "noise" clock.

How can I generate the clock signal without to go in a transient modelling/using the VtPulseDT component?

Thanks for the help.

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