Hi,
Pls see my comment below
- Can use ATX PLL instead of FPLL ?
- Yes. You can use ATX PLL instead of fPLL but may I know the reason why you want to use ATX PLL ?
- ATX PLL is typically used for 10G and above application while Arria 10 DP 1.4 only support till HBR3 which is only 8.1G. You don't really need ATX PLL
- Does ATX Pll supports storing link rate feature ? without using Multiple Reconfiguration Profiles!
- Basically DisplayPort example design is unique design where Intel Engineering team implement the design in a way that access a lot of PLL internal register setting.
- While for external user, it's recommend to just use the PLL reconfiguration profile to change to different PLL clk frequency and let PLL IP handle the PLL internal register setting automatically. User shouldn't mess up with PLL internal setting unless you know exactly how to tweak it like Intel Engineering team.
In short, I strongly recommend you to use back the fPLL and reconfig controller design in DisplayPort example design to ease the pain of design implementation detail as it's quite complicated in nature
- I won't be able to advise you further on how to tweak these internal setting as well
Thanks for your understanding
Regards,
dlim
Occasional Contributor
