Forum Discussion
6 Replies
- YuanLi_S_Intel
Regular Contributor
Not really needed. However, you might need to notice the I/O pin placement rules to avoid creating jitter to LVDS
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/max-10/ug_m10_gpio.pdf (Page 31)
- akali17
New Contributor
A few drivers may require an arrangement 25 resistor. On the off chance that the SSTL/HSTL input is being driven by another Si533x gadget, the 25 arrangement resistor isn't required as this is coordinated on-chip. The most extreme suggested input recurrence right now 350 MHz.
- Jiayi_H_Intel
Occasional Contributor
Thank you for replying. Could you help explain what is arrangement resistor?
- YuanLi_S_Intel
Regular Contributor
Hi Jiayi,
May i know where did you get this suggestion?
- Jiayi_H_Intel
Occasional Contributor
it just comes from SPEC saying that Rx need 100 ohm termination. I know that's refer to rx data. So I wonder if rx clock have any restriction.
- YuanLi_S_Intel
Regular Contributor
Hi Jiayi,
If it is LVDS, it doesnt matter whether you are using it as clock or digital pin. You will need to put RX 100 Ohm Termination as long as you are using LVDS.
Thank You