TCP/IP via TSE and Marvell PHY

actually from my board i am connecting to the pc. it is not showing any link. when i measured clocks receive clock i am getting 25 MHz ang i am not getting TX clk actually they mentioned that it should be either 2.5 MHz or 25 or 125 MHz but m not getting these clocks i am getting 500Hz signal only. when i red the data sheet they are telling that register setting where i have to change the register setting for this TX clk through hardware can u please tell me