I developp a custom board with the LS1043A processor.
I would like to used the LS1043A processor with a QSPI memory for boot device.
I would like to put in write protect mode the QSPI memory by pulling-down the QSPI_A_DATA2 pin of the processor. The signal QSPI_A_DATA2 of the processor is connected to the input/output DQ2/W_N pin of the QSPI memory.
Can I juste put a jumpper to force the QSPI_A_DATA2 pin to 0V to force the write protect of the QSPI memory ?
The output buffer of the QSPI_A_DATA2 pin of the processor it is a IO buffer with open drain output ? If yes a simple jumper with a pull-up resistor to OVDD can do the job.
It is important for us to write protect the memory by hardware, not by software.
Thank is you in advance for your reply.