I'm using a Atmel 8535 Microcontroller to program Serial EEPROM. I'm using a SPI protocol to program it.

My question is, if my SPI device is shared between many peripherals such as I/O's, ASIC's etc how to manage access conflicts on SI (serial input line of SPI) and SO (serial output line of SPI) ? ie how to know which peripheral is using SPI?

Can anyone please help me.

thanks in advance

harishankar s