1.4 Simulation Flow

The TVS simulation model updates the TVS macro outputs based on reading instructions given in the .mem file or .txt file. The file name must be passed to the simulation model for the TVS outputs to toggle. The parameter used to store the .mem file name is called “TVS_MEMFILE”. Add the following vsim command to pass the file name.

-gTVS_MEMFILE=“PATH_TO_FILE_RELATIVE_TO_SIMULATION_FOLDER”

.MEM File Format

The following format of the file is in hex:

<simulation time (τ ns) in hexadecimal>

<value of channel 0 at time τ>

<value of channel 1 at time τ>

<value of channel 2 at time τ>

<value of channel 3 at time τ>

The .mem file contains the simulation time followed by the digital values (16-bit) of the four ADC channels at that time. A value is required for the channel even if it is not used. The value can be 0. The simulation starts with all channel outputs being 0. The pattern can be repeated several times in the .mem file to reflect several values of the channel outputs. The content of the mem file is limited to 256 lines.