iserdes clock frequency

[AnttiLukats]

? What frequency should the iserdes clock be? Same as hyperbus clock phase 0?

[mohammadhgh]

@AnttiLukats It should be three times the hyperbus clock. In my design, I use 100 MHz for hyperbus and 300 MHz with the same phase for iserdes.

[AnttiLukats]

thanks, I just did think this should be specified in docs or in source code comments, as one can really not guess it...

[mohammadhgh]

I did the same mistake first time I used the IP core but actually it is mentioned in the tooltips of IP editor, but it is a little bit hard to notice!!

https://github.com/OVGN/OpenHBMC/blob/c4632d8966baad37e647e4706252a4194257e179/OpenHBMC/xgui/OpenHBMC_v2_0.tcl#L38

[OVGN]

Hello, @AnttiLukats ! Sorry that's my bad. I have added a lot of tooltips in the IP. This tooltips can be seen at step of IP core integration in block design in Vivado. Anyway I really have to add detailed documentation for this IP.

Thanks to @mohammadhgh for fast reply)). This is right, ISERDES clock should be 3 x clk_hbmc_0