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Community Council | Posts: 4,920 | Thanked: 12,867 times | Joined on May 2012 @ Southerrn Finland
#4
To get anything out of the device via JTAG you need 2 things;
  1. A JTAG reader/programmer of course. This is the easy requirement.
  2. Access to the JTAG pins of the device.
    This might mean you need to take it apart until you can get at the board in the correct place.
    Note that in many cases the access to JTAG port is via PCB pads that are normally connected via pogopins... so you might need to solder wires to them in your "home environment"
  3. The configuration files for the device, as without those you cannot ever hope to decipher what the physical layout of the JTAG chain is.
    If you don't have the configuration, there is no use pursuing this thing whatsoever. And the manufacturer will never give it to you...
 

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