Multiple drivers on I2C bus

[dave_59]

Change how you model open drain in i2c_if_type1

Push_pull, open drain in verilog

In reply to Dhee_27: Here’s a good explanation about the concepts. Push/Pull is the normal mode of most gate outputs - drive a zero or one. Open-drain can drive a zero or high-Z. In Verilog, this can be done with a continuous assignment. assign push_pull = data_reg; // implicit assign (strong0, strong1) push_pull = data_reg; // explicit assign (strong0, highz1) open_drain = data_reg; If this needs to be programmable, you can use a mode bit. assign bus = mode ? push_pull : open_drain; …