VHDL Implementation of HD 15530

'Manchester coding' is a Digital Line coding technique. It is used in areas like Bio-medical applications, Magnetic recordings, Satellite Communication, Servo systems, and various industrial applications. Manchester coder and decoder implementation is described in this paper. The Intersil HD-15530 is a high performance CMOS device IC. It is intended to service the requirements of military standard MlL-STD-1553 and time division multiplexed serial data protocols. The LSI chip has two sections, an Encoder and a Decoder. The encoder and decoder sections can operate completely independent of each other, except for Master Reset functions. The Encoders function is to produce the sync pulse, the parity bit as well as encode the data bits. The Decoders function is to recognize the sync pulse, identify it, decode the data bits and check parity. This IC supports 1MHz data rate of military standard MlL-STD-1553. This system is implemented in VHDL language using ModelSim Software for simulation.