| 摘要 |
PURPOSE:To shorten the delay time of a frame phase synchronizing circuit in the condition that bits are synchronized between input and output with respect to the transmission frame having the numerical value (pointer), which indicates the head position of a payload, in the overhead part. CONSTITUTION:A reception pointer value 12 is obtained by a pointer interpreting part 4, and the phase difference (offset pointer value 14) in the payload head position between input and output frames is obtained by an offset detecting part 6, and a substitution pointer value 15 is obtained from the sum of the reception pointer value 12 and the offset pointer value 14 by an addition processing part 7, and thereby, only the phase difference of overhead between the input and the output is absorbed through a variable shift register 8 to deliver data with a minimum delay. |
