WHAT ARE FPGA

WHAT ARE FPGA

A FPGA is a two dimensinol array of genral purpose logic circuit, called celles or logic block , whose fuctions are programmeble buses. eac... 23:46

A FPGA is a two dimensinol array of genral purpose logic circuit, called celles or logic block , whose fuctions are programmeble buses. each cells are linked to one  anothe rby programmble buses . here cells types are not restricted to gates, it is multiflication circuits capable of reliazing all boolean fuctions of few variables, in a addition cell may also contain one or two flilflop .

FPGA can store the programme that determines the circuit to be implemented in a RAM or PROM in the FPGA chip . the pattern of the data in this configuration memory(CM) determines the cells fuctions are their interconnections wirings. each bit of the CM controls a transistor switch in the targets circuits that can selects some cell fuction or make some connections .

content of CM can be replaced for design changes or to correct the the design errors . thus FPGA can be reprogrammed repeatedly which significally reduces development and manufacturing costs .