As mentioned in the datasheet of the part S25FL256S, it supports SPI modes 0 and 3. These modes are explained in page 14 of the datasheet(http://www.cypress.com/file/177966/download).
Mode0: polarity=0, phase=0
Mode3: polarity=1, phase=1
It is not correct to use polarity=1 and phase=0 (mode 2). Please correct your SPI mode and repeat testing.
I have try both the: Mode0: polarity=0, phase=0;Mode3: polarity=1, phase=1; With these configuration, I Can't read any of the ID-CFI information, So I want to confirm that Cypress is used the same SPI protocol with TI?
Do you have LLD for the device S25FL256S ?
Thank you very much.
Yes, we have LLD for S25FL256S. You can download it from the following link, http://www.cypress.com/documentation/software-and-drivers/low-level-driver-spi-flash?source=search&cat=software_tools.