Question on behalf of a customer
We are using a TMS3205545A chip whose SPI bus is connected to an external flash chip and another processor. When I try to access the flash chip via the other processor I am not able to do so as the SPI_RX and SPI_TX lines of the TI processor are held high by the TI processor. I tried to put the TI chip in reset but it still drives the line to a high.
Is there some way in which the SPI bus lines could be driven to a Hi-Z (Impedance state) in the code?
The only means of doing this is via JTAG commands, not sure this can be executed from the code