Description
There is a known issue with the final Cyclone® III device IBIS models where the output voltage signal is not monotonic at the rising and falling edges of the 1.8V SSTL 50 ohm On-Chip Termination (OCT) without calibration. The corrected Cyclone III IBIS models file can be downloaded from the link given below:
CIII_Corrected_IBIS_Model_2.ibs
The affected and corrected IBIS models are listed below:
- ttl18_cio_r50
- ttl18_cio_r25
- hstl18c1_cio_r50
- hstl18c2_cio_r25
- sstl18c1_cio_r50
- sstl18c2_cio_r25
- dhstl18c1_cio_r50
- dsstl18c1_cio_r50