Inverter between LPC1769 and LAN8720 REFCLKO signal

[lpcware]

Content originally posted in LPCWare by marianoizzi@yahoo.com on Fri Feb 21 07:30:32 MST 2014
Hi guys,

I was wondering why there is an inverter (74LVC1G04GV) on the REFCLKO signal
between the LPC1769 and the LAN8720, on the LPCXpresso 1769 board.
Is it to delay the clock?

[lpcware]

Content originally posted in LPCWare by martinayotte on Sun Jan 18 14:39:32 MST 2015
I'm wondering getting such answer too, since most of the boards have one, but I have a board from Haoyu Electronics in China named LPC1768-MiniDK2 which doesn't have one, and the ethernet seems to work properly. Since I wish to design my own board, I don't know if it is really needed.