Visible to Intel only — GUID: mwh1410471101178
Ixiasoft
Visible to Intel only — GUID: mwh1410471101178
Ixiasoft
1.4.2. Creating Accurate IBIS Models
The IBIS file generated by the Intel® Quartus® Prime software contains models of both input and output termination, and is supported for IBIS model versions of 4.2 and later. Arria® V , Cyclone® V , and Stratix® V device families allow the use of bidirectional I/O with dynamic on-chip termination (OCT).
Dynamic OCT is used where a signal uses a series on-chip termination during output operation and a parallel on-chip termination during input operation. Typically this is used in Altera External Memory Interface IP.
The Intel® Quartus® Prime IBIS dynamic OCT IBIS model names end in g50c_r50c. For example : sstl15i_ctnio_g50c_r50c.
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When the buffer is assigned as an output, use the series termination r50c.
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When the buffer is assigned as an input, use the parallel termination g50c.