http://www.alteraforum.com/forum/attachment.php?attachmentid=11567&stc=1 Hi. I'm "motto" of Altera beginner.I want to solve the timing error message. Design : Cyclone V RGMII Example Design http://rocketboards.org/foswiki/view/projects/cyclonevrgmiiexampledesign Setup Timing error path : TX_CLK_OUT_125 I am trying the below( 9 paths); http://www.alteraforum.com/forum/showthread.php?t=46960 It is look like timing violation. I want solve timing error. Please tell me about solve it. If anyone has any idea, please tell me. Thanks in advance.