---
+ Post New Thread
Results 1 to 18 of 18
  1. #1
    Full Member level 2
    Points: 2,301, Level: 11

    Join Date
    Jan 2004
    Posts
    146
    Helped
    3 / 3
    Points
    2,301
    Level
    11

    What does ASIC exactly mean?

    hi all i study electronical engineering
    and i wanna know what is ASIC mean
    and ist good form me

  2. #2
    Full Member level 5
    Points: 3,658, Level: 14
    asic1984's Avatar
    Join Date
    Nov 2003
    Posts
    259
    Helped
    4 / 4
    Points
    3,658
    Level
    14

    Re: what is ASIC

    hi

    asic : application specific ic

    of rmore informations in this field u can read a book like :

    Essential Electronic Design Automation (EDA)
    By Mark D. Birnbaum

    Publisher : Prentice Hall PTR
    Pub Date : October 01, 2003
    ISBN : 0-13-182829-0



  3. #3
    Member level 1
    Points: 2,067, Level: 10

    Join Date
    Jan 2002
    Posts
    35
    Helped
    0 / 0
    Points
    2,067
    Level
    10

    what is ASIC

    I think almost all ICs can called ASIC,
    like Intel or AMD's cpu.

    If you know how to design ASIC and familiar with tools, you will be easier to get a job.



  4. #4
    Member level 3
    Points: 2,991, Level: 12

    Join Date
    Dec 2001
    Posts
    60
    Helped
    0 / 0
    Points
    2,991
    Level
    12

    Re: what is ASIC

    ASIC is relativized to full custom IC. ASIC can be treated as a type of design methodology. Full custom IC design is start from cell desgin, and ASIC design is start from RTL description using pre-designed gate libraries.



    •   Alt12th July 2004, 05:32

      advertising

        
       

  5. #5
    Full Member level 1
    Points: 1,927, Level: 10

    Join Date
    Mar 2004
    Posts
    95
    Helped
    0 / 0
    Points
    1,927
    Level
    10

    Re: what is ASIC

    Quote Originally Posted by asic1984
    hi

    asic : application specific ic

    of rmore informations in this field u can read a book like :

    Essential Electronic Design Automation (EDA)
    By Mark D. Birnbaum

    Publisher : Prentice Hall PTR
    Pub Date : October 01, 2003
    ISBN : 0-13-182829-0
    Then.... What's the different between AISC and SOC (system on a chip)?
    Can I say if my chip include 51 and some IO control circuit, like USB... is a SOC?
    Why some people say they are SOC designer, and some people say they are "only" a AISC designer?
    What's the different?
    Isn't it a trend that all ASIC designer going to do intergare IP (job like SOC)?



    •   Alt12th July 2004, 05:35

      advertising

        
       

  6. #6
    Full Member level 3
    Points: 2,235, Level: 10

    Join Date
    Apr 2004
    Posts
    151
    Helped
    6 / 6
    Points
    2,235
    Level
    10

    Re: what is ASIC

    Quote Originally Posted by scorpionss22
    hi all i study electronical engineering
    and i wanna know what is ASIC mean
    and ist good form me
    You can research in this site http://www.emba.uvm.edu/~jswift/uvm_class/

    There are two books that I think you have to read

    1. 'The Designer's Guide to VHDL', Peter Ashenden, ISBN: 1558602704
    2. 'Application-Specific Integrated Circuits' Michael John Sebastian Smith,ISBN 0-201-50022-1 (Basic book)
    Beside, you can search in eda forum to read ASIC primer.pdf. I think there are two way to learn ASIC design.
    - Semi-ASIC : You can using VHDL to implement in FPGA, or CPLD to test. After that you must optimize your design by EDA tool and send you design to fabrication.
    - Full-ASIC: You have to know detail about CMOS, logic level, analog or digital design. This way take more time but it can reach maximize performance.

    This is my opinion, so I do not know it match your request or not.
    Good luck.



    •   Alt12th July 2004, 06:18

      advertising

        
       

  7. #7
    Full Member level 1
    Points: 2,009, Level: 10

    Join Date
    Nov 2003
    Posts
    97
    Helped
    4 / 4
    Points
    2,009
    Level
    10

    Re: what is ASIC

    ASIC is a general definition of IC field, and are different with general -purpose IC, such as CPU, DSP.



  8. #8
    Full Member level 1
    Points: 1,927, Level: 10

    Join Date
    Mar 2004
    Posts
    95
    Helped
    0 / 0
    Points
    1,927
    Level
    10

    Re: what is ASIC

    Quote Originally Posted by zyphor
    ASIC is a general definition of IC field, and are different with general -purpose IC, such as CPU, DSP.
    But more and more AISC add DSP or ARM inside, should we call that a ASIC or SOC or DSP?



  9. #9
    Member level 3
    Points: 1,878, Level: 10

    Join Date
    Jun 2003
    Posts
    57
    Helped
    0 / 0
    Points
    1,878
    Level
    10

    Re: what is ASIC

    SOC=ASIC+CPU+DSP+BUS....?



  10. #10
    Member level 3
    Points: 1,897, Level: 10

    Join Date
    Apr 2004
    Posts
    57
    Helped
    1 / 1
    Points
    1,897
    Level
    10

    Re: what is ASIC

    ASIC could be treated as any design that adheres to a specificly implemented function. CPUs or DSP chips on the other hand are used for general computation whereas the ASIC design is targeted to enhance a specific function's computation through dedicated hardware rather than general purpose hardware.

    Having said this, there are many methodoliges that can be adopted to achieve ASIC design. Among the most frequently used methodologies are the custom ASIC and the Gate Array methods. The former involoves full custom or semi-custom IC design which includes layouts and schematics while the latter begins with HDL modelling of the hardware and later implemented on the CPLD or FPGA chip.



  11. #11
    Full Member level 4
    Points: 3,653, Level: 14

    Join Date
    Jan 2004
    Posts
    235
    Helped
    19 / 19
    Points
    3,653
    Level
    14

    Re: what is ASIC

    ASIC is a custom-designed chip that does any specific function.

    For example, if a company X design a device, it can do it in an FPGA. However, there's some limitations to FPGA (speed, functions, ...). So, when a design is completed, that can build it into an ASIC.

    The process of making ASIC is very costly. If you have a bug in an ASIC, you can't correct it. You have to design a new ASIC with the corrections, which imply more cost.

    However, when done in large quantity, ASIC become cheaper than FPGA.

    A design on an ASIC take much less space than on an FPGA (dye size). So, you can put much more stuff in an ASIC than an FPGA. If you would compare ASIC and FPGA to a software analogy, an FPGA would be an emulator, where an ASIC would be the real machine.

    A SOC is a system on chip. Basically, it's a way of putting the processor, IO, timers, ... on a single chip. It's analog to a microcontroler, but can incorporate many more things, like Ethernet MAC, video processor, ...

    A SOC can be implemented in an FPGA.

    So, to come to the first question asked, ASIC is really intended for big company, having a lot of money, with the objective of selling soo much of those ASIC that eventually, the cost of the manufacturing of the ASIC will come lower than selling the same amount of units in FPGA. In other words, it's not good to design ASIC if you don't plan to sell at least 250 000 to 1 milion units.

    FPGA on the other hand is the ideal choise for low volume, rapid prototyping, corrections, ... In an FPGA, if you have a design, you can verify immediately if it work. If you have corrections to do to the design, you can see the result in little time. With ASIC, it takes days/weeks just to design the first prototypes. If you have bugs, you're stuck with it until another few weeks (until a new ASIC respin). Also, since each ASIC respin cost money, you would like to wait, and live with the bugs a long time, to make sure you find the largest amount of bugs before re-spining the AISC. With FPGA, if you find a bug, you can easily find it, correct it, and test the corrections the very same day, for no additional cost.

    Many companies do ship commerial boards with FPGA on it. Plus, the newer FPGA are becoming soo cheap that it often cheaper to design with them, even in large quantities. Plus, the speed of FPGA are getting much higher with the years.

    I hope this answer some questions :)

    Big Boy



  12. #12
    Junior Member level 3
    Points: 1,643, Level: 9
    Arthurzss's Avatar
    Join Date
    Jul 2004
    Posts
    30
    Helped
    0 / 0
    Points
    1,643
    Level
    9

    Re: what is ASIC

    Quote Originally Posted by Big Boy
    ASIC is a custom-designed chip that does any specific function.

    For example, if a company X design a device, it can do it in an FPGA. However, there's some limitations to FPGA (speed, functions, ...). So, when a design is completed, that can build it into an ASIC.

    The process of making ASIC is very costly. If you have a bug in an ASIC, you can't correct it. You have to design a new ASIC with the corrections, which imply more cost.

    However, when done in large quantity, ASIC become cheaper than FPGA.

    A design on an ASIC take much less space than on an FPGA (dye size). So, you can put much more stuff in an ASIC than an FPGA. If you would compare ASIC and FPGA to a software analogy, an FPGA would be an emulator, where an ASIC would be the real machine.

    A SOC is a system on chip. Basically, it's a way of putting the processor, IO, timers, ... on a single chip. It's analog to a microcontroler, but can incorporate many more things, like Ethernet MAC, video processor, ...

    A SOC can be implemented in an FPGA.

    So, to come to the first question asked, ASIC is really intended for big company, having a lot of money, with the objective of selling soo much of those ASIC that eventually, the cost of the manufacturing of the ASIC will come lower than selling the same amount of units in FPGA. In other words, it's not good to design ASIC if you don't plan to sell less than 250 000 to 1 milion units.

    FPGA on the other hand is the ideal choise for low volume, rapid prototyping, corrections, ... In an FPGA, if you have a design, you can verify immediately if it work. If you have corrections to do to the design, you can see the result in little time. With ASIC, it takes days/weeks just to design the first prototypes. If you have bugs, you're stuck with it until another few weeks (until a new ASIC respin). Also, since each ASIC respin cost money, you would like to wait, and live with the bugs a long time, to make sure you find the largest amount of bugs before re-spining the AISC. With FPGA, if you find a bug, you can easily find it, correct it, and test the corrections the very same day, for no additional cost.

    Many companies do ship commerial boards with FPGA on it. Plus, the newer FPGA are becoming soo cheap that it often cheaper to design with them, even in large quantities. Plus, the speed of FPGA are getting much higher with the years.

    I hope this answer some questions :)

    Big Boy
    Yes, you said it.



  13. #13
    Member level 1
    Points: 1,651, Level: 9

    Join Date
    Jul 2004
    Posts
    33
    Helped
    1 / 1
    Points
    1,651
    Level
    9

    Re: what is ASIC

    ASIC is Aplication Specific Intergrate curcuit. That is IC but the function of it u can program, normally it is digital IC.



  14. #14
    Full Member level 3
    Points: 2,235, Level: 10

    Join Date
    Apr 2004
    Posts
    151
    Helped
    6 / 6
    Points
    2,235
    Level
    10

    what is ASIC

    I think that there are two main differentlity between ASIC and general IC.

    ASIC is designed with optimize of resource and perfomance. Example, MP3 decoder chip is ASIC for decode MP3 file. In fact, DSP or mP also is used for decoding MP3 file but ASIC operates with high speed and peromance because we use hardware circuit to replace program intructions. DSP and mP or mC have many function so we have to write program with stricly principle.

    ASIC do not have static structure.Structure of ASIC depends request of custome and the choice, ability, of designer. But DPS or mP only have two static structure Harvard or Von-Newman.

    This is my opinion, so I do not know they are right or
    uncorrect. Bye



  15. #15
    Member level 1
    Points: 1,626, Level: 9

    Join Date
    Aug 2004
    Posts
    35
    Helped
    0 / 0
    Points
    1,626
    Level
    9

    what is ASIC

    asic is application specific ic.
    generaly befor making any ASIC you prototype your functionality on any FPGA and after you do it successfully you go for ASIC design... if and only if you can afford to spend huge amount for that. ( thats only you need it in a bulk). or else for experementing you can go on with FPGA.



  16. #16
    Full Member level 1
    Points: 1,906, Level: 10

    Join Date
    Apr 2005
    Posts
    116
    Helped
    5 / 5
    Points
    1,906
    Level
    10

    Re: what is ASIC

    ASIC is those IC for specific application, such as DVD decoder,

    TV decoder etc.



    Quote Originally Posted by scorpionss22
    hi all i study electronical engineering
    and i wanna know what is ASIC mean
    and ist good form me



  17. #17
    Newbie level 2
    Points: 1,077, Level: 7

    Join Date
    Dec 2006
    Posts
    2
    Helped
    0 / 0
    Points
    1,077
    Level
    7

    what is ASIC

    an ASIC is a part of SOC...
    in SOC there can be ASIC but vice versa is not possible...
    we can say ASIC is a subset of SOC



  18. #18
    Member level 3
    Points: 1,380, Level: 8

    Join Date
    Aug 2006
    Location
    india
    Posts
    64
    Helped
    1 / 1
    Points
    1,380
    Level
    8

    Re: what is ASIC

    ASIC is an IC dedicated for particular purpose.



+ Post New Thread
Please login