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Recent content by sivarajm

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    propagation delay of a system

    Hi, you can try this, 1. If der are different module in your project (work), Identify the timing critical module. a. you can do this by P&R for each module. 2. try to do pipeline your logic.
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    Difference between sanded cell library provided by different library vendors

    Hi, We know der are many library vendors, for eg, a. TSMC b. UMC c. Samsung d. IBM e. Chartered etc... consider a technology (45nm) above mentioned library vendors will provide libraries for 45nm technology, 1. what is the difference between TSMC libraries with others? 2. Is der anything...
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    Type of I/O standard in ASIC

    Hello, We know der are many types of I/O standards like 1.LVCOMS 2.LVTTL 3.LVDS 4.SSTL I & II 5.HSTL I & II etc... Usually what type of I/O will be used in chip, to say more clearly 1. if a chip I/O voltage is 2.5V, what type I/O standard will be preferred and why? 2. This will be...
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    Full Custom ASIC In Depth

    Hi Every one, Basically Full Custom ASIC is starting from scratch, but 1. Wen we go for full custom ASIC? a. for a new technology b. for existing technology (45nm), optimizing Power, Timing and Area etc... c. for both case d. other (specify) can you share your...
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    Transition violation In Depth

    Hi every one, I am fixing transition violation in my company, I got some questions. Transition fix between singe driver and single sink, Basically we will decide size of buffer and we will insert buffer in between a driver and sink to avoid trans. violation. der are different sizes of buffers...
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    CDMA : chips per bit versus Pseudo random number sequence period

    I am really happy to share this, please go-through fully, you will get clear basic idea :-) **broken link removed**
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    CDMA Tracking and Accusation module

    I will be happy if u provide any link or pdf.
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    Warning: (vsim-3473) Component instance "i_rdy : xbip_pipe_v2_0_xst" is not bound

    Re: Warning: (vsim-3473) Component instance "i_rdy : xbip_pipe_v2_0_xst" is not bound Hi Sckoarn, Thank you for your valuable reply. Actually I copied all the supporting files and compiled. Even then, at the time of simulating I am facing this issue. I thought of missing some files initially...
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    CDMA Tracking and Accusation module

    Hi, I am designing CDMA Transceiver, I got struck in Accusation and Tracking part :?, Can u suggest me some idea how to implement this part in CDMA. If you have any data(files "pdf" or link), I will be happy:-) if you share with me. Thank you in advance :-)
  10. S

    CDMA : chips per bit versus Pseudo random number sequence period

    for example, If LFSR length = 6 then pn_lenth will be 64. this 64bit will be mixed with ur 1 bit of data. Let mi know if u I am confusing you.
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    Warning: (vsim-3473) Component instance "i_rdy : xbip_pipe_v2_0_xst" is not bound

    Warning: (vsim-3473) Component instance "i_rdy : xbip_pipe_v2_0_xst" is not bound Hi, I am trying to simulate a SIN and COS LUT table generated from core-gen. 1. I have created "Xilinxcorelib" 2. Corresponding files are compiled. 3. Wen I am simulating, I am getting this warning. (please...
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    WRITE A COUNTER IN VHDL

    counter vhdl Whats the problem in it dude..... u find the rising edge of every pulse and start count for every rising of the pulse. silmultaniously u run another counter.... to count upto 1 sec. If one sec readched then u initialise your counter. Do u have any idea of what will width of the...
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    What is Counter overflowing? overflow implicitly, explicitly

    Re: counter overflow hi sau_sol, 1) What will overflow? when the counter reaches maximum limit time ie for 8 bit 0xFF for 16bit 0xFFFF 2) what will happen beyand that. 3) whats the disadvantages and advantages of counter overflow?
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    How does the bit maintain in the flash memory in power off?

    Flash Memory I am having a basic question in flash memory. This question also applicable for EEPROM. In flash memory MOSFET will have 2 gates [control gate and floting gate] and the a bit/voltage will be stored in between these two gates. My question is even when the power off how the bit is...
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    Interfacing SPARTAN 3 with DDR SDRAM + MIG_V2.3 problem

    error:constraintsystem:59 Hi, I am trying to Interface DDR SDRAM with Spartan3. I am using MIG_V2.3 to generate Interface block. When I am doing PAR, I am getting the following error..... -----------------------------------------------------------------------------------------------...

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