Hi:
I connect the flash S25FL256S with TI DSP SPI，now I can read the Device ID and Common Flash Interface information accurately with the "RDID" command. But when I want to use the command "WREN" to enable the write, It's failure. After send the "WREN" command , I can't read the right status on the "WEL" of the Status Register1. How can I enable the write? The CS# is only 8 clocks.
The other question is that the S25FL256S can be driven by SPI mode 0 and mode 3; What's the exact mean of these mode. The TI's SPI mode define as follows:
| POLARITY | PHASE | Action |
| 0 | 0 | Data is output on the rising edge of SPICLK. Input data is latched on the falling edge |
| 1 | 0 | Data is output one half-cycle before the first rising edge of SPICLK and on subsequent falling edges. Input data is latched on the rising edge of SPICLK. |
| 0 | 1 | Data is output on the falling edge of SPICLK. Input data is latched on the rising edge. |
| 1 | 1 | Data is output one half-cycle before the first falling edge of SPICLK and on subsequent rising edges. Input data is latched on the falling edge of SPICLK. |
Now, I use the mode polarity 1 phase 0 , do I use the right mode ?
Thank you for your reply!
