analog begin @(initial_step) begin count = 0 ; clock = 0 ; flag_clk = 0 ; end @( cross( V(CLK,GND)- V(VDD,GND), +1 ) ) begin clock = 1 ; count = count + 1 ; if(count >= 100 ) count = 0 ; end @( cross( clock - 1 , +1) ) begin if(clock != 0) clock =...
\busa+index \-clock \***error-condition*** \net1/\net2 \{a,b} \a*(b+c) 2.6.2 关键字 关键字 是预定义的非转义标识符,用于定义语言结构。以转义字符开头的 Verilog HDL 关键字不会被解释为关键字。 所有关键字均以小写字母定义。附件 D 列出了所有已定义的关键字。 2.6.2.1 Verilog-A 关键...
EDA课程Verilog程序设计-数字时钟 moduleclock(clk,rst,en,madd,hadd,s,m,h); inputclk,rst,en; inputmadd,hadd; output[5:0] s,m,h; reg[5:0] s,m,h; always@(posedgeclk) begin if(!rst)begins<=0; m<=0; h<=0;end elseif(!en)beginif(!hadd)beginif(h==23) h<=0;elseh<=h+...
I found a workaround that uses absdelay() to create delayed copies of the clock, and generates the desired outputs on the crossings of these delayed clocks--see code/waveforms (2) below. This solution seems inefficient when generating a large number ...
A multi-clocked property assert statement must not be embedded in procedural code where a clock is inferred.For example, following forms are not allowed. always @(clk) assert property (mult_clock_prop);// illegal initial @(clk) assert property (mult_clock_prop);// illegal ...
Here's part of my code for the hour part of the clock. It takes clock input that's already down to the proper timing. I'm trying to get the code to count up to 12 then reset down to 0. The outputs A and B go to a 7 segment driver, and I'm using C to count to 12 and...
sis of Random Jitter in a Clock Multiplying DLL Architec- ture [C]. ProRISC 2001, 12 th Annual Workshop on Circuits ,Systems and Signal Processing ,Veldhoven ,the Netherlands,29 - 30 November 2001. Beek RCH van de ,Klumperink EAM ,Vaucher CS ,et al . Jitter in DLL - Based...
I am new to Verilog and I have been tasked to produce a new clock signal using a PLL (with which I am also not very familiar). The input clock is a 21 MHz 57% duty cycle clock (The clock cycle is meant to synchronize with 7 data bits so 4 bits are sent ...
This paper presents the behavioral implementation of jitter tolerance test benches for digital clock and data recovery circuits using Verilog-A. First, we encode a variable-length pseudo-random bit sequence (PRBS) generator. Such circuits are widely used to generate test data for a variety of ...
analog begin @(initial_step) begin count = 0 ; clock = 0 ; flag_clk = 0 ; end @( cross( V(CLK,GND)- V(VDD,GND), +1 ) ) begin clock = 1 ; count = count + 1 ; if(count >= 100 ) count = 0 ; end @( cross( clock - 1 , +1) ) begin if(clock != 0) clock =...