icon_pro.ncf

SDRAM读写控制的实现与Modelsim仿真

NET "control0<0>" TNM_NET = J_CLK ;
NET "iupdate_out" TNM_NET = U_CLK ;
NET "ishift_out" TIG ;
TIMESPEC TS_J_TO_J = FROM J_CLK TO J_CLK 30 ns ;
TIMESPEC TS_U_TO_J = FROM U_CLK TO J_CLK 15 ns ;
TIMESPEC TS_U_TO_U = FROM U_CLK TO U_CLK 15 ns ;
TIMESPEC TS_U_TO_D = FROM U_CLK TO D_CLK TIG ;
TIMESPEC TS_J_TO_D = FROM J_CLK TO D_CLK TIG ;
TIMESPEC TS_D_TO_J = FROM D_CLK TO J_CLK TIG ;