02-28-2019 05:38 PM
I am trying to get some clarification on some of the models in kintexuplus.ibs
Particularly I wanted to know the difference between...
HP_LVDS
HP_SUB_LVDS
HP_LVDS_DT_I
HP_LVDS_DT_AC_COUPLED_I
HP_LVDS_PE1600
HP_LVDS_MAIN
HP_LVDS_PE
I am assuming HP_LVDS vs HP_LVDS_DT_I is that HP_LVDS_DT_I has an internal 100 ohm termination?
03-04-2019 12:51 AM
HP_LVDS: LVDS with no internal termination
HP_SUB_LVDS: SUB_LVDS Buffer
HP_LVDS_DT_I: LVDS Input with internal termination (DIFF_TERM)
HP_LVDS_DT_AC_COUPLED_I: LVDS input for AC coupled links
HP_LVDS_PE1600: LVDS with Pre-Emphasis
HP_LVDS_MAIN & HP_LVDS_PE: Used in HP_LVDS_PE1600 under [Driver Schedule]
Do take a look at Table 1-55 UG571 v1.10 Page#128 for attributes of LVDS IO standard that will help you understand the above.
The recommended method to generate IBIS model is through Vivado so that it maps the corresponding IBIS model to your pinout based on your settings. Do take a look at this blog post I authored where I described the method to generate IBIS model from Vivado
03-04-2019 12:51 AM
HP_LVDS: LVDS with no internal termination
HP_SUB_LVDS: SUB_LVDS Buffer
HP_LVDS_DT_I: LVDS Input with internal termination (DIFF_TERM)
HP_LVDS_DT_AC_COUPLED_I: LVDS input for AC coupled links
HP_LVDS_PE1600: LVDS with Pre-Emphasis
HP_LVDS_MAIN & HP_LVDS_PE: Used in HP_LVDS_PE1600 under [Driver Schedule]
Do take a look at Table 1-55 UG571 v1.10 Page#128 for attributes of LVDS IO standard that will help you understand the above.
The recommended method to generate IBIS model is through Vivado so that it maps the corresponding IBIS model to your pinout based on your settings. Do take a look at this blog post I authored where I described the method to generate IBIS model from Vivado
03-04-2019 06:36 PM
Thank you!