| 摘要 |
PURPOSE:To realize multi-distributing function by variable-specifying a channel memory address which writes respective time slots data on an incoming highway together with a channel address memory which reads data to respective time slot on an outgoing highway. CONSTITUTION:For an incoming highway 101 data, only bits specified by a lead 103 are written with respect to an SPM 1 address specified by a lead 104. On the other hand, an RSCM 5 stores the encoded information, which is encoded from an SPM 1 concerning to an outcoming highway 102, corresponding to the time slot of an outcoming highway 102, while an RCNT 4 supplies discrete values synchronized with the time slot number of the outgoing highway 102 to the RSCM 5 and an ASEl 7. An AGEN 6 generates the slot number of dial tone, talkie and no call pattern as a reading address to supply it to the ASEL 7. The ASEL 7 selects either an output lead 109 or an output lead 113 according to I/O corresponding relation and supplies it as an reading address to the SPM 1. Thus this can provides a time switching circuit having high functionality, economical merits and wide application fields. |
