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Memory cycle time of Time Slot Interchange switch

In a time slot interchange (TSI) switch, 8 input lines are scanned in sequence to build up an input frame with 8 slots. The incoming lines each produce 16KBps (B=Byte). Each slot in the TSI switch holds 8 bits. What is the required memory cycle time of this switch?

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One "time slot interchange" (TSI) slot operation involves one memory read and one memory write. This operation has to be completed for all the slots before the next bytes arrive at the slots (because each slot in the TSI switch holds 8 bits = 1 byte).

Time difference b/w ...

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Solution demonstrates two different methods to arrive at the answer.

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