Ctm is doing signal Integrity simulations on the QSPI-If of our LS1046A design.
They are using the IBIS model ‘ls1046_vop3_9april2016.ibs’
For the QSPI-IF I found the models ‘lvcmos18_ssr_fc_out’ or ‘lvcmos18_fsr_fc_out’ for output pins and ‘lvcmos18_fsr_fc_io’ or ‘lvcmos18_ssr_fc_io’ for I/O-pins.
They haven’t found a possibility to select between one of the two I/O characteristics in the Reference Manual nor in the Datasheet.
Is there a possibility to select between the different driving strengths or it is fixed?
If fixed, which one is used?