SPI flash on UART pins | Cypress Semiconductor
SPI flash on UART pins
If I want to use SPI flash for boot and configure GPIF to be 32-bit and enable UART in firmware. Do SPI flash chip and UART interface interfere with each other since they share the same pins? One example is that when UART_CTS is asserted which drives SPI_SSN low. This should enable SPI_MOSI which is also UART_RX. This seems to be a problem for me. Can some shed some light on this?
Have anyone used this scenario successfully? Thanks.