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Can 2.5V Crystal oscillator be used for reference clk of DDR3L(1.35V)in C10GX?

TGao
Beginner
264 Views

The bank of Crystal oscillator input is 1.35V. it's the ddr3l bank ,and I'm not sure whether 2.5V/1.8V Crystal osi can used for reference clock of ddr3l?

 

Ted

0 Kudos
1 Reply
BoonT_Intel
Moderator
155 Views

Hi Sir,

I believe the DDR3L reference clock is set to SSTL135 IO standard? If yes, you may check is the 2.5V OSC able to meet the VIH/VIL requirement of the SSTL135 IO standard.

You may check the VIH/VIL requirement from C10 GX datasheet. Since it is clock, please refer to AC column.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-10/c10gx-51002.p...

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