Other Parts Discussed in Thread: TUSB9261
About status register of Serial Flash
I want to set the status register bit of SFLASH to write-protection. (SRWD = 1, BP0 = 1, BP1 = 1)
The reason is to prevent erroneous writing of data due to electrical noise or the like.
Set the status register bit after writing the firmware with a ROM writer, before mounting SFLASH on the board.
After mounting on the board, the WP pin is fixed at L.(Write protect)
Therefore, it becomes impossible to write SFLASH data by SPI.
As a result, I understand that SFLASH cannot be written with the flash banner.
I have the following questions.
Is normal operation OK?
For example, during normal operation, does the TUSB9261 write an operation log to SFLASH?
