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The purpose of this paper is to design and develop a MAC Transmitter on Field Programmable Gate Arrays (FPGA) that converts 32 bit data in to 4 bit DATA for transmitter. In this paper we design the Ethernet (802.3) connection oriented LAN Medium Access Control Transmitter (MAC). It starts by describing the behavior of MAC circuit using VHISC Hardware Description Language (VHDL). A synthesized VHDL model of the chip is developed and implemented on target technology. This paper will concentrate on the testability features that increase product reliability. It focuses on the design of a MAC Transmitter chip with embedded Built-In-Self- Test (BIST) architecture using FPGA technology. General Terms Medium Access Control, VHISC Hardware Description Language Keywords- Local Area Network (LAN), Medium Access Control(MAC), Linear feed Back Register, Logical Link Control(LLC), VHISC Hardware Description Language (VHDL). STRT1. INTRODUCTION The Media Access Control (MAC) data communication protocol sub-layer, also known as the Medium Access Control, is a part of the data link layer specified in the seven-layer of OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multipoint network, typically with a local area network (LAN) or metropolitan area network (MAN). A MAC protocol is not required in full-duplex point-to-point communication. In single channel point-to-point communications full-duplex can be emulated. This emulation can be considered a MAC layer. The MAC sub-layer acts as an interface between the Logical Link Control RWsub layer and the network's physical layer. The MAC layer provides an addressing mechanism called physical address or MAC address. This is a unique serial number assigned to each network adapter, making it possible to deliver data packets to a destination within a sub network, i.e. a physical network without routers, for example an Ethernet network. FPGA area and speed optimization to implement computer network protocol is subject of research mainly due to its importance to network performance. The objective of resource utilization of field programming gate array(FPGA) is to allocate contending to embed maximum intricate functions. This approach makes design cost effective and maximizing IEEE 802.3 MAC performance. Binary exponential back off algorithm. Very high speed integrated circuit hardware description language (VHSIC-HDL) VHDL coding to implemented synchronous counter and FSM coding style influence performance of MAC transmitter[1][3].However effective VHDL coding style optimizes FPGA resource allocation for area and speed performance of IEEE 802.3 MAC transmitter can be optimized using linear feedback shift register, one hot finite machine (FSM) state encoding style.

Design and Optimization of Medium Access Control Protocol of IEEE 802.3 Transmitter with VHDL