Abstract: An interface method in a system-on-chip includes: a process of transmitting, by a first circuit unit, first payload data transferred from a first functional block and a first signal for requesting buffer allocation for storing the first payload data to a second circuit unit, and decreasing a resource value in which an initial value is set to correspond to the number of payload data which may be stored in a buffer provided in the second circuit unit by one; a process of storing, by the second circuit unit, the first payload data in the buffer according to the first signal; a process of withdrawing, by the second circuit unit, payload data selected among the payload data stored in the buffer, and transferring the payload data to a second functional block, and transmitting a second signal indicating that the buffer is empty to the first circuit unit; and a process of increasing, by the first circuit unit, the resource value by one.

Abstract: The present disclosure relates to a method and apparatus enabling setting of I/O parameters for communication between a system-on-chip and a memory.