about the tri internel

[Altera_Forum]

hi: 

I want to connect my FPGA(cyclone ep1c6240c8) with my 51mcu .and there are adc and dac in my fpga board . I want to build a system in fpga to control my data fle.such as I can use ad and store ad data in my ram.and i can get the data from ram through fpga.but I know that cyclone can't build tri internal. So how can i do that. how can I use my ADC as a module as peripherals of my mcu and can communciate with other module ??

[Altera_Forum]

--- Quote Start ---  I know that cyclone can't build tri internal  --- Quote End ---  That's right, because no respective hardware exists in a FPGA. FPGA internal connections are basically oneway.  But you can, of course use internal tristate functions in a behavioral logic description. They are converted to multiplexers by the design compiler, achieving the same logical behaviour as a tristate hardware.  So I don't exactly understand, what's your problem in connecting data from different sources in a FPGA. I don't see a particular restriction for your project.