| 摘要 |
<p>PROBLEM TO BE SOLVED: To cope with 10G-EPON with a small circuit scale, and to avoid the extreme deterioration of an effective throughput, and to cope with a downlink transmission speed frame different from a broadcast frame, and to reduce unnecessary power consumption.SOLUTION: A frame transfer processing part 56 reads transfer instruction information and LLID(Logical Link ID) from an MAC address search table 561 by using the destination MAC address of an input down frame as a key, and applies it to the down frame, and writes the down frame in an input FIFO 567 or an output FIFO 569 of a system indicated by the transfer instruction information and a control signal from an access arbitration part 568, and the access arbitration part 568 mediates the writing of the frame in the output FIFO 569, and controls the inter-memory transfer of frame data. On the basis of a setting signal SET from the outside indicating the use state of each of circuits constituting a station side device, a power supply control part 50 supplies a power source to the circuit in a use state, and blocks power supply to the circuit in an unused state.</p> |
