Justin Davis's Finite State Machine Datapath Design, Optimization, and PDF

By Justin Davis

ISBN-10: 1598295292

ISBN-13: 9781598295290

ISBN-10: 1598295306

ISBN-13: 9781598295306

Finite kingdom laptop Datapath layout, Optimization, and Implementation explores the layout house of mixed FSM/Datapath implementations. The lecture starts off via studying functionality concerns in electronic platforms corresponding to clock skew and its impact on setup and carry time constraints, and using pipelining for expanding procedure clock frequency. this can be via definitions for latency and throughput, with linked source tradeoffs explored intimately by using dataflow graphs and scheduling tables utilized to examples taken from electronic sign processing purposes. additionally, layout concerns on the subject of performance, interfacing, and function for various kinds of stories usually present in ASICs and FPGAs reminiscent of FIFOs, single-ports, and dual-ports are tested. chosen layout examples are provided in implementation-neutral Verilog code and block diagrams, with linked layout documents on hand as downloads for either Altera Quartus and Xilinx Virtex FPGA structures. A operating wisdom of Verilog, good judgment synthesis, and uncomplicated electronic layout recommendations is needed. This lecture is acceptable as a better half to the synthesis lecture titled advent to good judgment Synthesis utilizing Verilog HDL.

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4 schedule. ” Each clock cycle of latency is one more clock cycle that it takes for the pipeline to become full and for all execution units to become active. A pipelined datapath with a large latency is efficient as long as it has a continuous stream of input data. 11: Blend equation implementation with pipelined multiplier, latency = 3. not provide continuous input data, thus allowing the pipeline to become empty or partially empty, then the datapath throughput is significantly decreased. 6 compares the datapaths that have been discussed to this point by clock period, latency, initiation period, and throughput.

1d using a saturating subtraction operation, which clips the result to its minimum value of zero. An eight-bit unsigned saturating adder is shown in Fig. 2. The output is saturated to its maximum value of ‘b11111111 when the eight-bit sum produces a carryout of ‘1’. In case of saturation, output the maximum value 8'b11111111 a[7:0] 8 b[7:0] 8 + sum[7:0] 8 8 Co //saturating adder module satadd (a, b, y); 1 y[7:0] 0 8 {1'b0,a} This forms a 9-bit value whose most significant bit is ‘0’, with the remaining 8-bits provided by a.

Find any changes to the previous calculations. Any equation that uses the delay of the input buffer C must be recalculated with that value set to zero. The first change is in the calculation of the clock-to-output delay for the circuit. There is only one clock-to-output path through the circuit through the output register. The new clock-to-output delay for this circuit is reduced by 2 ns to 11 ns. 12) The pin-to-pin combinational delay and the register-to-register delay are not affected by the change to the clock because they do not include the clock buffer C.

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Finite State Machine Datapath Design, Optimization, and Implementation by Justin Davis

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