Coupling device, processer device, data process device and data transmission method

The device (103) has a serial interface (110) for receiving data, and a parallel interface (114) for transmitting data. A cache memory (104) is coupled to the serial and parallel interfaces. The cache memory is provided to receive and store data received in a serial data format via the serial interface, and to transmit data stored in the cache memory to the parallel interface. The parallel interface comprises a parallel data bus (112) and parallel address bus (111). A buffer memory is coupled with the serial and parallel interfaces. An independent claim is also included for a method for transmitting data from a memory.