CDCLVD1208 interface with FRQ,CLKE,100MHZ,50PPM,LVDS Oscillator

Shalom Lavi

I use with CDCLVD 1208 as buffer clk 100Mhz 50ppm to FPGA and then to DDR3 ,one of the Oscillator not working well , when I by-pass the buffer and connect direct to FPGA it's working. in the past this Oscillator kind working well ,

other option i connect the Oscillator as single ended it's also working , what could be whorg with buffer ?

see picture drwing .

Thanks

Shalom

over 11 years ago

0 Gabe Ayala over 11 years ago

TI__Genius 10320 points

Hi Shalom,

Please refer to the DS section referencing input coupling methods. In your current configuration, you have DC coupled the oscillator to the CDCVLD1208 and provided 50 ohms to GND instead of 100 ohm differential.

Gabe

Clock & timing

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CDCLVD1208 interface with FRQ,CLKE,100MHZ,50PPM,LVDS Oscillator