specify block用来描述从源点(source:input/inout port)到终点(destination:output/inout port)的路径延时(path delay),由specify开始,到endspecify结束,并且只能在模块内部声明,具有精确性(accuracy)和模块性(modularity)的特点。specify block可以用来执行以下三个任务: 一、描述横穿整个模块的各种路径及其延时。(module ...
在specify block中一般有三种信息: 1)various paths across the module; 2)Assign delays to those paths; 3)Perform timing check; path的declaration包括三类: 1)simple path declaration; 2)edge sensitive path declaration; 加 posedge/negedge 表示FF的有效沿是posedge,从in到out是一个positive的polarity,rise ...
Verilog中的specifyblock和timingcheck Verilog中的specifyblock和timingcheck 在ASIC设计中，有两种HDL construct来描述delay信息：1)Distributed delays：通过specify event经过gates和nets的time，来描述delay;对于net和gate都有三种delay信息： 1)rise delay 2)fall delay 3)transition to high-impedance value 只有...
I'm currently converting a legacy testbench to use SystemVerilog interfaces between the DUT and some behavioural models. The testbench code includes a specify block that uses the $width system task to check for glitches on a signal between the DUT and one of the models. I've tried to upda...
The specify block is declared inside the module declaration.The path declaration describes the path between the source and destination signal inside the module and assigns the delays to this path. The path can be a simple path, edge sensitive path or state-dependent path. The path is on the ...
The Out Bus Element block provides a bus, signal, or message as the output of an external port.
For synchronous hardware simulation behavior, setState controltoSynchronous. TheState Controlblock inSynchronousmode improves the HDL simulation behavior of blocks with state, or blocks that have reset or enable ports. When use theSynchronousmode of the block, the generated HDL code uses fewer hardware...
The Signal Specification block allows you to specify the attributes of the signal connected to its input and output ports.
This initializes the 8192x12 block ram with the supplied data. I am not familiar enough with VHDL to know the exact syntax to use but I would be very surprised if it is not supported in VHDL as well. PS: Well I guess I gave Altera/Intel too much credit for their VHDL support. Per...
Verilog中的specify block和timing check 李延年 Design Verification 来自专栏 · DV笔记 6 人赞同了该文章 specify block用来描述从源点(source:input/inout port)到终点(destination:output/inout port)的路径延时(path delay),由specify开始,到endspecify结束,并且只能在模块内部声明,具有精确性(accuracy)和模块性(mo...