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SDRAM doesn't work with c6416

Started by swal...@hotmail.com October 9, 2005
hi,all.I connect c6416 EMIFB(the clock is ECLKOUT1, 50MHZ) with SDRAM MT48LC4M16A2(7.5ns).The question is I cann't read or write the sdram absolutely.the data in the address 0x60000000 has not a change.If I write a '0' to the address repeated ,a sawtooth is probed in the data bus ,and all control signals like ce ,oe, we, CAS, RAS, almost have the same wave.why?How to solve the problem?
thanks.Any help would be greatly appreciated.