Serial PMA reference clock?
What is the rate of the PMA reference clock? Where does it come from?
Is it locked to the same source as the MAC clock?
I am assumeing the reference for the PMA is 644 or 322 Mhz, and that it
is locked to the same source as the MAC XGMII TX clock. So this would
mean a frequency synthesizing PLL is required in the 10GBase-R PCS.
Shouldnt we have specifications associated with this PLL?
Justin Gaither Phone: 512-306-7292 x529
RocketChips a Division of Xilinx Fax: 512-306-7293
500 N. Capital of TX Hwy.
Bldg 3 email: jgaither@xxxxxxxxxxxxxxx
Austin, TX 78746 WWW: www.rocketchips.com
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