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  1. #1
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    Default Flash chip in Recievers


    dear experts
    Please tell the newbees all about flash chips, and thair programming
    procidures in detail.

    thanks :?:

  2. #2
    az30094
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    Flash is a kind of memory that stores its contents even when the power is disconnected. It can be read, written and erased using a set of special codes via software.

    In satellite receivers, this chip is used to store the program for the receiver, along with other user information like settings, satellite data and channels data.

    This chip could be programmed by connecting the receiver to a PC. A small "loader" program is needed to carry out the read/write/erase operations. Generally, such loader programs are receiver specific.

    Alternatively, there is another method of programming a flash chip - the JTAG way. This needs a special cable for connecting the receiver to your PC, and using a special program, like Jkeys, to access the flash (and other components in the receiver) directly.

    Hope this gives a good start for you to build your knowledge.

  3. #3
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    Default please,please please,yes please

    this is just the sort of sat stuff my brain requires,please write more on this
    subject,i would be eternally indebted,you would be creating a monster.
    why are some cables straight through[pin to pin],and other cables are [2-3,3-2,5-5]?which one is a null modem,or serial cable,i`m great at fitting satellite systems,rubbish with computers,please write some more

  4. #4
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    Default

    Thanks so many for for sharing basic information on flash chips for newbees .
    Dear experts please disclose much more information on this issue
    or guide to the links on this topic

  5. #5
    ali_eagle
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    great friends please continue about the jtag and softwares information , expert should write about this , how i can set some softcam keys for neosat sx9800ci ,

  6. #6
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    WHATS THE DIFFERANCE B/W FLASH MEMORY AND S/W THAT WE LOADING IN OUR STBs.IS IT THE OPERATING SYSTEM OF AN STB?IF WE LOSE THE FLASH MEMORY OF ANY STB,CAN WE FIND IT ON THE NET OF DIFFERANT BRADS.WHAT ARE THE SYMPTHEMS OF LOSING FLASH MEMORY AND CAUSES? SORRY FOR SO MANY Qs.
    Abdur-Rehman Dawar.

  7. #7
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    Default

    Quote Originally Posted by az30094
    Flash is a kind of memory that stores its contents even when the power is disconnected. It can be read, written and erased using a set of special codes via software.

    In satellite receivers, this chip is used to store the program for the receiver, along with other user information like settings, satellite data and channels data.

    This chip could be programmed by connecting the receiver to a PC. A small "loader" program is needed to carry out the read/write/erase operations. Generally, such loader programs are receiver specific.

    Alternatively, there is another method of programming a flash chip - the JTAG way. This needs a special cable for connecting the receiver to your PC, and using a special program, like Jkeys, to access the flash (and other components in the receiver) directly.


    Hope this gives a good start for you to build your knowledge.
    @az30094,
    Jtag is a special cable if i not wrong?, Is this cable can be connected to rs232 input socket of the receiver? or receiver must have special jtag input socket? which is specifically for Jtag cable only?

  8. #8
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    Default

    Quote Originally Posted by dawar098
    WHATS THE DIFFERANCE B/W FLASH MEMORY AND S/W THAT WE LOADING IN OUR STBs.IS IT THE OPERATING SYSTEM OF AN STB?IF WE LOSE THE FLASH MEMORY OF ANY STB,CAN WE FIND IT ON THE NET OF DIFFERANT BRADS.WHAT ARE THE SYMPTHEMS OF LOSING FLASH MEMORY AND CAUSES? SORRY FOR SO MANY Qs.
    Each receiver has its own design of software, so you cannot use one software to another receiver. To play safe always backup your stb software before loading a new software. If something went wrong? then you can go back from your old software.

  9. #9
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    Default

    I think, our senior and expert freinds are not in mood to share knowedge with newbees?

  10. #10
    az30094
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    Default Re: please,please please,yes please

    Quote Originally Posted by motorbud120
    why are some cables straight through[pin to pin],and other cables are [2-3,3-2,5-5]?which one is a null modem,or serial cable,i`m great at fitting satellite systems,rubbish with computers,please write some more
    The cable configuration depends on the pair of equipment being connected. The configuration you mentioned are referred to as "cross patch" cable. The other one with 2-2, 3-3, 5-5 is referred to as "straight through" and is a Null Modem Cable.

  11. #11
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    Default

    This is also what I need. How to replace the flash chip and the do's and dont's guidelines. Like for instance, my SRT 4870 to convert to other model that has menu key function.

    Thanks

  12. #12
    az30094
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    Quote Originally Posted by dawar098
    WHATS THE DIFFERANCE B/W FLASH MEMORY AND S/W THAT WE LOADING IN OUR STBs.IS IT THE OPERATING SYSTEM OF AN STB?IF WE LOSE THE FLASH MEMORY OF ANY STB,CAN WE FIND IT ON THE NET OF DIFFERANT BRADS.WHAT ARE THE SYMPTHEMS OF LOSING FLASH MEMORY AND CAUSES? SORRY FOR SO MANY Qs.
    Flash Memory is Hardware and S/W (Software) is, you know what. Yes, the piece of software we load into flash memory contains everything needed to make a piece of hardware called STB (or receiver) working. It contains operating system, user software, and initial data needed to kick start the receiver. It can also have embeded user data.

    If you can Jtag your receiver, you can backup your flash and keep it in a safe vault as a doom's day provision. Some sites also have flash files listed along with user loadable software. Alternatively, if you have the latest uploadable and working software, that should also work.

    As for the symptoms of failing Flash Memory. If you find that your settings are getting corrupted or when the channels that you have scanned are getting lost, or even the software stopped working. If any of these signs you find, then it is time to think seriously about flash. The data loss occurs only when the receiver is powered off (cut off from wall socket, not just powering off by remote).

    You have to replace the chip on the motherboard. Considering the costs and reliability issues, I believe buying a new receiver is a better option than getting the chip replaced.

  13. #13
    az30094
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    Quote Originally Posted by totingPh
    @az30094,
    Jtag is a special cable if i not wrong?, Is this cable can be connected to rs232 input socket of the receiver? or receiver must have special jtag input socket? which is specifically for Jtag cable only?
    Jtag, though commonly referred to as a "cable", but actually it is a "system" of connecting the embedded systems to a terminal device like a PC. All the processors in embedded systems have a set of pins that could be controlled remotely by a program running in an external device. This is used for development, debuggung and testing of software. There will be provision for making connection to these pins. Some manufacturers provide easy to access pin blocks, but most often, they are left as solder pads where you can solder the cables directly to the motherboard.

    Normally, (well, all that I know) Jtag uses Parallel Port for communication and not the serial port.

  14. #14
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    Default


    dear az30094

    u defind all in better way for our knowledge
    please if u post some pictures of jtag hardware and how to connect
    it with reciever ie,starsat or neosat or any other, it will help us in best way.
    and please tell us that where from we down load flash files refer the sites.
    thanks lott

 

 

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