| 摘要 |
A method and an arrangement for the timing of digital signal transmission in a TDMA PON system including a line termination (OLT) to which a plurality of network units (ONU) are connected is described. Network units (ONU) are of the type where the high speed data flow (DATA) to be transmitted to the line termination (OLT) in the serial format, is previously organized in bytes which, according to the invention, are stored inside an elastic memory (ELAS_MEM), by means of a write clock (WR_CK) obtained from the division of the high speed clock (HF_CK) of the relevant network unit (ONU). The elastic memory (ELAS_MEM) is read by means of a read clock (RD_CK), always obtained from division of the above mentioned high speed clock (HF_CK), which phase is modified in response to the reception of synchronization information issued by the line termination (OLT). <IMAGE> |
