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devel / comp.lang.verilog / Re: Use of Both Posedge Clk and Negedge Clock

Re: Use of Both Posedge Clk and Negedge Clock

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Subject: Re: Use of Both Posedge Clk and Negedge Clock
From: liue248@gmail.com (e liu)
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by: e liu - Sat, 24 Jun 2023 02:19 UTC

ppo...@gmail.com 在 2005年5月27日星期五下午5:20:48 [UTC+8] 的信中寫道：
> using posedge and negedge clk , in fact, is equal to always @ ( clk or
> negedge reset )
I am facing the same situation when writing a FSM, and I wonder if I can seperate the posedge and nededge always.
For example:
always@(posedge clk or posedge rst) case(current_state) case1: .... case2: ....... case3:.......
always@(nededge clk or posedge rst) case(current_state) case1: .... case3:........

Re: Use of Both Posedge Clk and Negedge Clock

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Subject: Re: Use of Both Posedge Clk and Negedge Clock
From: gnuarm.deletethisbit@gmail.com (gnuarm.del...@gmail.com)
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by: gnuarm.del...@gmail. - Sat, 24 Jun 2023 06:44 UTC

On Friday, June 23, 2023 at 10:19:59 PM UTC-4, e liu wrote:
> ppo...@gmail.com 在 2005年5月27日星期五下午5:20:48 [UTC+8] 的信中寫道：
> > using posedge and negedge clk , in fact, is equal to always @ ( clk or
> > negedge reset )
> I am facing the same situation when writing a FSM, and I wonder if I can seperate the posedge and nededge always.
> For example:
> always@(posedge clk or posedge rst) case(current_state) case1: .... case2: ...... case3:.......
> always@(nededge clk or posedge rst) case(current_state) case1: .... case3:.......

Stop thinking in terms of the code. Think in terms of what hardware you expect to have generated. Then describe the actions of that hardware, and the tools will follow your instructions. It's call a Hardware Description Language for a reason... "HARDWARE DESCRIPTION". So, describe the hardware you want built. If you don't know what that hardware is, how will the tools know???

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

Subject	Author
Use of Both Posedge Clk and Negedge Clock	e liu
Use of Both Posedge Clk and Negedge Clock	gnuarm.del...@gmail.com