Resynchronizing circuit for TDM system

摘要

A synchronization circuit for a system in which digital coded data is received by an exchange from a transmitting station in time division multiplex form and is transmitted in time division multiplex form. In such a system, the incoming data is received at a clock rate dependent on the clock of the transmitting station and is stored in a memory at that rate. Read out from the memory is at the exchange rate. Since only one operation in the memory, either read or write, can occur at a time, control must be imposed to separate in time the reading and writing operations. To provide this separation, a time shift equal in duration to one time slot is introduced to delay the later-started of two operations.