June 21 2017
The IEBus is a communications protocol used in a number of vehicles to send information between human interfacing devices such as a display and radio headunit. The physical layer uses a differential pair, and is capable of allowing multiple devices to create a network. Some manufacturers call the IEBus by other names. For instance, Honda GA-NET II; Toyota AVC-LAN. The NEC uPD6708 chip is the most common controller. However, if emulation is needed any chip capable of producing a differential signal could be used, such as an inexpensive RS485 chip.