- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Error(18694): The reference clock on PLL "u_gmax2500|u_lvds_dpa_x16|lvds_0|core|arch_inst|internal_pll.pll_inst|altera_lvds_core20_iopll", which feeds an Altera LVDS SERDES IP instance, is not driven by a dedicated reference clock pin from the same bank. Use a dedicated reference clock pin to guarantee meeting the LVDS SERDES IP max data rate specification.
之前17.2编译没问题的,现在换成了19.4报这个错误
这个参考时钟输入是来自于另一个PLL的输出
Link Copied
2 Replies
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi @FZhao12 You will need to assign it to a dedicated clock input pin on the same bank. I remember that newer version will block you from using IO pin as clock input to avoid your LVDS SERDES not performing up to specification.
Hope this answers your questions.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
thanks There are no other questions for the moment
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page