Method and system for master devices accessing slave devices

A system comprising:

• at least a slave device;
• a plurality of master devices, each of the master devices accessing the slave device simultaneously or respectively
• a bus controller, coupled between the master devices and the slave device, designed to manage that only one of the master devices can communicate with the slave device at one time over a data bus regardless when and how the bus signals are coming from the master devices,
• wherein the bus controller includes a select unit and a bus signal buffer, the select unit is configured to determine which one of the bus signals shall be transported to the slave for a response only if when more than one of the bus signals are received at the same time, the bus signal buffer is provided to buffer the bus signals that are not selected for communication with the slave device, and
• wherein, after the slave device receives a selected bus signal from the one of the master devices, the slave device sends a bus response signal to the master devices via the bus controller, and one of the master devices from which the bus signal is selected identifies and acknowledges the bus response signal.