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Tri-state Issues

Honored Contributor II

I have a cyclone IV fpga based development board.The board has 16-bit ADC and DAC both sharing the 16 number of same pins .ADC and DAC IC data bus uses,same fpga pins.To share the pins usage i wanted to implement a tristate controller for both.In all the examples provided by the Altera,they use flash and external RAM.Can it be possible to share the pins of ADC and DAC ?

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Honored Contributor II

Why not simply used bidirectional ports: 


I assume the ADC and/or DAC have a chip select function as well. If direction = 1 use DAC, if direction - 0 read ADC.