SERIAL-TO-PARALLEL/PARALLEL-TO-SERIAL CONVERSION ENGINE

摘要

A serial-to-parallel/parallel-to-serial conversion engine that provides a bi - directional interface between a serial and a parallel TDM highway. The seria l- to-parallel data conversion device includes a serial data input interface th at receives the serially received data and provides a received data word. A serial-to-parallel mapping circuit receives the received data word and generates memory write control and write address signals. A memory device includes a first port responsive to the memory write control signals and wri te address signals for writing the received data word into the memory device, a nd a second port responsive to memory read control and read address signals for reading data from the memory device. Output interface circuitry generates th e memory read control and read signals, and receives output data from the memo ry device and reorders the bits of the parallel output data to provide the parallel data word.