Serial Flash Memory


I have an rcm2020 board and winbond memory, particularly w25x80. This memory has SPI interface. Whenever I send some instruction I do not get any response. I looked at my scope and I saw that my instruction are flowing correctly. For example; the Manufacturer ID instruction. When I use the manufacturer ID instruction, I was expecting to receive EFhex and 13hex. But when I scope the output of the winbond there no pulses that run through the line. I hope somebody can help me with this.