| 摘要 |
PURPOSE:To prevent the transmission of the ACK signal with a CSMA/CD system by transmitting the jamming signal when the preparation is not completed yet for reception of data. CONSTITUTION:A controller part of a CSMA/CD system is shown in the diagram. The signal sent from a bus is transmitted to a reception data bus 322 via a decoder 305 and a serial/parallel converter 312. The transmission signal from a transmission data bus 319 is sent to the bus via a parallel/serial converter 309 and an encoder 304. A multiplexer 307 transmits a jamming signal onto the bus when the coincidence is obtained between addresses of reception signals and the preparation is not completed yet for reception signals and the preparation is not completed yet for reception with a bus 330. |
