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Altera_Forum
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14 years ago

Tri-state fanout converted to OR gate

Hi, I'm writing Verilog code for an I2C expander with bidirectional 16-bit output. If I need to read the status of the pins into a register, which means I the tr-state output pins are conn...
Altera_Forum's avatar
Altera_Forum
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14 years ago

The tri-state logic is burried in the I/O so it's not possible to assign a tristate signal directly to another signal. If you take a look at a diagram of the I/O logic of the FPGA this will become more clear.