Serial PMA reference clock?

[Justin Gaither <jgaither@rocketchips.com>]

Everyone,
	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

-- 
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@rocketchips.com
Austin, TX 78746               WWW:   www.rocketchips.com
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