I'm trying to simulate a DSP in LTspice. The manufacturer has the IBIS file, but I can't seem to find a spice file. I found these guys (https://www.spisim.com/) with a little googling and they have an IBIS to SPICE converter, but now they're owned by another company. Is this a good place to start or should I look elsewhere?
I'm confused, Spice simulates analog circuits, a DSP is a full blown processor, why would you simulate a DSP with a circuit simulator?
I never used it, but apparently QSpice can do simulations with Verilog blocks. I hope that means cosimulations with real Verilog, not Verilog-A.
https://www.diyaudio.com/community/threads/thoughts-on-new-simulator-qspice.402212/
https://www.diyaudio.com/community/threads/thoughts-on-new-simulator-qspice.402212/
Ibis models the i/o portions, of otherwise digital chips. ive used ibis for pcb design transmission line simulation
and signal integrity (SI). We used hyperlynx software to do pcb SI sim based on pcb stack up and materials. Xilinx and other semi vendors provided the ibis models. You even get ibis models for memories, ASICS etc. FPGAs and ASICS have multiple I/O types that get chosen for the app, such as unipolar or differential, current mode(pecl), totem pole. open drain etc. Hyperlynx is now supported by siemens that bought Mentor Graphics.
https://eda.sw.siemens.com/en-US/pcb/hyperlynx/
I used this method 20 years ago, how time flys
and signal integrity (SI). We used hyperlynx software to do pcb SI sim based on pcb stack up and materials. Xilinx and other semi vendors provided the ibis models. You even get ibis models for memories, ASICS etc. FPGAs and ASICS have multiple I/O types that get chosen for the app, such as unipolar or differential, current mode(pecl), totem pole. open drain etc. Hyperlynx is now supported by siemens that bought Mentor Graphics.
https://eda.sw.siemens.com/en-US/pcb/hyperlynx/
I used this method 20 years ago, how time flys
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I see. I had never heard of IBIS, but when it is just for simulating I/Os, post #7 is irrelevant.
More like a virtual tdr type of measurement. simulate what you would see on a scope with a logic level change using selected cells. Check for Ringing from reflections from the load and disturbances on the transmission line if they are modeled. Eye diagrams can be done. Launch a voltage step response representing your source and model the transmission line effects with loads.