Abstract: A memory controller (SMC) is provided for coupling a memory (MEM) to a network (N; IM). The memory controller (SMC) comprises a first interface (PI) for connecting the memory controller (SMC) to the network (N; IM). The first interface (PI) is arranged for receiving and transmitting data streams (ST1-ST4). A streaming memory unit (SMU) is coupled to the first interface (PI) for controlling data streams (ST1-ST4) between the network (N; IM) and the memory (MEM). Said streaming memory unit (SMU) comprises a buffer (B) for temporarily storing at least part of the data streams (ST1-ST4). A buffer managing unit (BMU) is provided for managing a temporarily storing of data streams (ST1-ST4) in the buffer (B) in a first and second operation mode (1OM; 2OM). In the first operation mode (1OM), data from the data streams (ST1-ST4) to be stored in the memory (MEM) are temporarily stored in the buffer (B) until a portion of the buffer (B) is occupied.