| 摘要 |
A data transfer system transfers frames with more than two data words from a transmitter 100 to at least one receiver 102 in a time-multiplexed manner. The transmitter 100 and receiver(s) 102 are connected via four signal lines: a clock signal 112, a serial data signal 110, a word-select signal 114 and a frame-begin signal 116. The data is serially transferred via the serial data line 110, in synchronisation with periodic clock pulses of the clock signal 112. The word-select signal 114 triggers selecting a next transmit channel register from which the transmitter 100 transmits the next data word and a next receive channel register into which the receiver 102 stores the data word to be received next. The frame-begin signal 116 triggers selecting a first one of the channel registers. The data transfer system may, for instance, be used for transferring eight digital audio channels in a DVD player between components such as an input/output interface, a filter, a (de-)coder or a digital signal processor. The data transfer system is compatible with I2S. |
