 It is being used by several Japanese air conditioner manufacturers (for example, "M-Net" from Mitsubishi and the "P1/P2" or "F1/F2" bus from Daikin).Fujitsu provided HBPC (Home Bus Protocol Controller) chip as MB86046B.But it is unclear whether Fujitsu (currently, Cypress) still manufactures this HBPC LSI as of 2018.