CDCE6214: Use CDCE6214 for PCIe clock distributer

Akihisa Tamazaki

Genius 11940 points

Part Number: CDCE6214

Hello team,

The customer is considering to use CDCE6214 for the converter from PCIe clock to LVDS.

Input : 100MHz (PCIe differential clock 100MHz)

Output : 250MHz LVDS output

Would this be possible using CDCE6214?

Best Regards,
Akihisa Tamazaki

over 4 years ago

0 Aaron Black over 4 years ago

TI__Genius 9905 points

Hello Akihisa-san,

I just want to confirm, PCIe clock input signat will be HCSL signal? Normally this signal is between 0V to 0.75V, while the CDCE6214 requires a VIH of 0.8 × VDD_REF. This won't be acceptable without a significant voltage level-shift.

Although input might have difficulties, the CDCE6214 definitely can produce 250MHz LVDS output if proper input levels can be achieved.

0 Akihisa Tamazaki over 4 years ago in reply to Aaron Black

TI__Genius 11940 points

Aaron-san,

Thank you for your answer.

Best Regards,
Akihisa Tamazaki

Clock & timing

Clock & timing forum

CDCE6214: Use CDCE6214 for PCIe clock distributer