Serial data link utilising NRZI and Manchester code.

摘要

An apparatus for the transmission of data over a serial link is described. It comprises a direct memory access controller (10, 60) which extracts the data from a memory (80, 90) and passes it to a serial network interface (20, 50). The serial network interface (20, 50) carries out non-return-on-zero-invert-on-one (NRZI) and Manchester coding on the data before passing the data onto a transmitter (30, 40). The data is transmitted over a serial link (70) to a receiver (30, 40) from whence it is decoded in another serial network interface (20, 50) and passed using another direct memory access controller (10, 60) to another memory (80, 90). <IMAGE>