Transfer acknowledgement in a bus system

摘要

An apparatus and method of use for acknowledging transfer requests from a master device in a bus system comprises an arbitrator which routes requests from a master device to a slave device and passes a notification or acknowledgment signal from a slave device to the master device prior to transferring data on a separate data bus. The notification signal may include data transfer start and finish indicators as well as an identifier for the master device. The notification signal may persist while the transfer of data is taking place. The slave device may also transmit stall and abort signals to the master device through the arbitrator.