| 摘要 |
PURPOSE:To detect the occurrence of an error quickly by providing an answerback field to each time slot, and performing transmission while confirming a reception state. CONSTITUTION:A reception control part 8 outputs data from a receiver 6 to an information processor EQP through a receiving data line 9. A transmission control part 10 outputs data, inputted from the EQP, to an insertion control circuit 7. An answerback generation part 12 outputs an error check result from an error check part 13 and an answerback code, determined by an EQP state line 14, to the insertion control part 7. An answerback discrimination part 15 discriminates the contents of the answerback field of a time slot sent out after one round, and then outputs result to the transmission control part 10. The circuit 7 inserts data into a data field, a check bit field, and an answerback field according to the indications from the control part 10 and generation part 12. The transmitted data are transmitted by a driver 6 from the control part 10 to a bus 1 through the circuit 7. |
