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Recent content by adscrz

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    How to improve Fmax ? want to add some registers

    Re: How to improve Fmax ? Hi, I re-write this code, but Fmax lower, from 208MHz --> 195MHz. always @(posedge sys_clk or negedge reset) if (!reset) begin state <= verital_blank ; end else begin state <= next_state; end always @(posedge sys_clk or...
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    How to improve Fmax ? want to add some registers

    Re: How to improve Fmax ? Thanks for everyone's advice! I try to add the following Verilog HDL synthesis attributes in Quartus II But the Fmax is same: 207.68MHz ! It seem the parallel_case is not work in this case :( case (state) // synthesis parallel_case I will try to re-write the code...
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    How to improve Fmax ? want to add some registers

    How to improve Fmax ? I found some combination logic between two registers after compilation with below code, so the Fmax only 100.8MHz, Could you give me some suggestion? I want to add some registers , but I do know how to add it :( Thanks. // State Machine - Next State Assignment...
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    Does Hspice 2003.03 include Awaves for Linux ?

    turbowave spice No Awaves for Linux . Use the CScope
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    Circuit simulator for linux

    We use the hspice 2003 View the wave with Cscope
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    please help...redhat 8 or 9 for cadence 5.0.3.3???

    Upgrade redhat8 to 9. I have test it. it can work.
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    Tool that generates layout from Spice netlist or Verilog code

    verilog to layout? >you also can use cadence ic5 environment to do the same. Which tools in IC5 do this job ?
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    How to design a 20MHz crystal oscillator with 50% duty cycle

    crystal oscillator,duty cycle Search : A 1.2-um CMOS Current-Controlled Oscillator.pdf in google May be can help u.
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    Current-Control Oscillator problem

    Thanks for all ! I will try and paste the result.
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    Current-Control Oscillator problem

    Current-Control Oscillator problem I am designing a Current-Control Oscillator . But it can not work in hspice, when I set the initial value of n1, n2 in hspice: .IC V(n1)= vcc V(n2)= 0 then it can work. Without the initial value, it can not work. I also find the reason why it can not work...
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    Where can I download the DW8051 Core?

    Hi, all Where can I download the DW8051 Core? Thx.
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    How to identify 3 states by 1 pin?

    Someone advises: % Add a "weak driver" to this input pin. If it is floating, then the weak drive will dominate its state. PS. you need to drive both high and low. (2 cycles) Added after 29 minutes: The figure is:
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    How to identify 3 states by 1 pin?

    How to identify 3 states by 1 pin? In some remote control IC, like PT2262, 2272, there are 3 states: VCC, GND, high resistance at address pin, what is the circuit used in the IC internal ? Thx
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    Hspice problem in linux system

    Thx to all. I will try the gwave. Thanks again!
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    Hspice problem in linux system

    dear all: the hspice 2003 (linux version) did not include the awave , how to view the wave ? Thx.
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