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  1. #1
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    Default Where I can find info abt JTAG


    Can any body help me more about JTAG. I heard that when the receiver is not working or any problem, we can solve the same by JTAG. Is there any link to know about the same. Please help me. Best Regards to all and thank you in advance for your kind help . My receiver powersky D8210 CISK

  2. #2
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    Default

    check this site.... there's a good topic about JTAG... http://forums.al7bar.tk/
    Admin, h**p://satellite.kenforum.com click here to register

  3. #3
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    Default JTAG function

    JTAG does matter with the chipset and its tractor.

    in simple way to explain it, if the flash erased in your receiver, you can not turn on and of course you can not upgrade it. Normally people will replace the flash.

    But if there is the JTAG port, you can input the software without taking the flash off.

    The first important is to check if your receiver has the JTAG port or not/

  4. #4
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    Default Re: Where I can find info abt JTAG


  5. #5
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    Default proper size replacement

    And you need jtag size firmware to replace the defective firmware.
    Most firmware on the net is designed to be loaded via serial port
    and isn't the full 2,097152 bytes needed for jtag recovery.

  6. #6
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    Default Re: Where I can find info abt JTAG

    Quote Originally Posted by wilson
    What is specaility in that Link. I cannot find even a single word about Jtag in that forum

  7. #7
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    Default


    Hello Friends,

    CLICK HERE FOR JTAG INFORMATION


    What is Jtag .......................

    jKeys is a program primarily used to access memory on IRDs. It works by utlizing processor diagnostic devices via the JTAG port. This software has been used on STMicroelectronics STiXXXX (ST20 based core) and LSI SC2000 processors.
    jKeys supports a new device called jInterface. This device connects to a PC using the serial port as opposed to the parallel port. It uses a microcontroller to perform the majority of JTAG communications, removing the burden from the PC. In doing so it alleviates many of the problems associated with poor timing and electrical characteristics exhibited by computers. It provides buffering and standard level signals at consistent clock rates to provide stable and reliable reads/writes. It is completely hands free, and with the exception of 2 simple removable adapters, is configured totally by jKeys operation.







    Basic-----

    - works on Windows 95/98/Me/NT/2K/XP
    - auto detects STMicroelectronics ST20 base processors and LSI SC2000
    (ST micros STi5500, STi5505, STi5508, STi5510, STi5518, ST20-TP2, ST20-TP4, ST20-GP6) (LSI micro SC2000).
    - auto detects most Echostar IRDs (2700, 2800, 3700, 3800, 3900, 4700, 4900, 501/5100, 301/3100, 6000)
    - for IRDs detected, automatically read IRD number, Box Keys, Build Config, Model ID, Boot Strap and Software version
    - works on several DTV IRDs (DRD420RE, DRD431RG, DRD220)
    - for all IRDs known by jKeys, base memory flash configuration is provided
    - allows flash reads for non-16 bit wide memory layouts
    - reads memory and saves to file
    - parallel port diagnostics





    Advanced

    --------
    - Development Panel (STi based mostly)
    - check and adjust EMI configuration registers
    - trap read/write byte, word ,dword
    - DCU Peek/Poke
    - EJTAG DMA Read/Write (SC2000)
    - upload user's function, pass arguments, trigger function , read back values
    - Passive Trap (STiXXXX)


    Flash Programming (STi and LSI)

    - auto detects flash memory (shows base, size, mfg/dev codes, manufacturer and part number)
    (29F400BT, 29DL323T, 29F400BB, 29LV160DT/DB, M29F400T, M29W800AT, 28F320/J5/J3A/S3/S5, 28F160, 28F800B/B5-B)
    - user specified base address for manually detecting flash memory
    - blank check prior to write (STi only)
    - read/erase/program complete flash/sector

    - EEPROM Programming
    - now reads/writes to I2C EEPROM via JTAG



    USE OF JKEYS














    Farukh Khawaja

 

 

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