Sequential Verulog Topics part 8 ppsx
Sequential Verulog Topics part 8 ppsx
... routines can do the following: • Read information about a particular object from the internal data representation • Write information about a particular object into the internal data representation ... nets sbar and y1 when stimulus is applied to module mux2_to_1 described in Example 13-1 on page 281 . A top-level module that instantiates the 2-to-1 multiplexer, applies stimulus, and...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 9 ppsx
... would consider design constraints such as timing, area, testability, and power. The designer would partition the design into high-level blocks, draw them on a piece of paper or a computer terminal, ... represent the second generation of Verilog PLI. Access routines can read and write information about a particular object from/to the design. Access routines start with the prefix acc_. Acce...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 7 ppt
... combination of the inputs. • Sequential UDPs are used to define blocks with timing controls. Blocks such as latches or flipflops can be described with sequential UDPs. Sequential UDPs are modeled ... table is the most important component of UDP specification. • UDPs can be combinational or sequential. Sequential UDPs can be edge- or level-sensitive. • Combinational UDPs are us...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 10 pps
... example, the following for loop builds an 8- bit full adder: c = c_in; for(i=0; i <=7; i = i + 1) {c, sum[i]} = a[i] + b[i] + c; // builds an 8- bit ripple adder c_out = c; The always ... c_out = c; The always statement The always statement can be used to infer sequential and combinational logic. For sequential logic, the always statement must be controlled by the change in
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 1 ppt
... //and a fall delay of 8. The data path is from in to out, and the //in signal is not inverted as it propagates to the out signal. (posedge clock => (out +: in)) = (10 : 8) ; specparam statements ... three delays, rise, fall, and turn-off //Each delay has a min:typ:max value specparam t_rise = 8: 9:10, t_fall = 12:13:14, t_turnoff = 10:11:12; (clk => q) = (t_rise, t_fall, t_tur...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 5 ppt
... UDP basics In this section, we describe parts of a UDP definition and rules for UDPs. 12.1.1 Parts of UDP Definition Figure 12-1 shows the distinct parts of a basic UDP definition in pseudo ... endprimitive //end of udp_and definition Compare parts of udp_and defined above with the parts discussed in Figure 12-1 . The missing parts are that the output is not declared as reg and ... p...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 13 docx
... VNOR U115 ( .in0(reset), .in1(newspaper), .out(n 289 ) ); VNOT U1 28 ( .in(\PRES_STATE[1] ), .out(n2 98) ); VAND U114 ( .in0(n297), .in1(n2 98) , .out(n296) ); VNOT U127 ( .in(\PRES_STATE[0] ... newspaper # 180 coin = 1; #40 coin = 0; #80 coin = 2; #40 coin = 0; //Put two dimes; machine does not return a nickel to get newspaper # 180 coin = 2; #40 coin = 0; #80 coin = 2;...
Ngày tải lên: 01/07/2014, 21:20
Sequential Verulog Topics part 14 doc
... identical stimulus to the RTL and the gate-level netlist and compare the output. 3: Design a 3-to -8 decoder, using a Verilog RTL description. A 3-bit input a[2:0] is provided to the decoder. The
Ngày tải lên: 01/07/2014, 21:20