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Page 2Features of VLSI:Compactness.Speed of access.Ease of maintenance.Cost effective.Life of the product.
Page 3Gordon Moore’s (in 1965) said that transistors on achip would double every year.He then recalibrated it to every two years in 1975. David House, an Intel executive at the time, notedthat the changes would cause computer performanceto double every18 months for a foreseeable future.MOORE’S LAW:
Page 4DIGITAL DESIGN FLOW: RTL Coding synthesis Floor planning Placement Clock routing Routing Physical verificationFront end(Logical design)Back end(physical design)
Page 5Programming Languages VHDL VERILOG HDL
Page 7RAM:RAM is our working memory storage. All the data, which the PCuses and works with during operation, are stored here. Data are stored ondrives, typically the hard drive. However, for the CPU to work with thosedata, they must be read into the working memory storage, which is madeup of RAM chips.
Page 8RAM access time is in nanoseconds,Hard disk access time is in milliseconds.
Page 9If reset is switched highOutput is set to ‘0’.If is in write modeThe i/p is assigned to write pointer of RAM.If is in write modeThe read pointer of RAM is assigned to o/p.Program Logic:
Page 10If value of read pointer and write pointer is same then it isdefined to be empty.If write location is 31 locations next to read [3:0] then it isdefined to be full.Program Logic:
Page 11If both read mode and write mode are switched high andboth pointers specify same location then we need send anerror message.Program Logic:
Page 12Technical schematic of RAM :