Difference between revisions of "JTAG"

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[http://gratis.rigour.info/content/view/sesso-nei.htm sesso nei parcheggi] [http://blog.rigour.info/web/darth/ darth] [http://content.rigour.info/html/messenger/ messenger 8 0] [http://dir.rigour.info/scope-elettriche/ scope elettriche lava] [http://gratis.rigour.info/content/view/ninna-nanna.htm ninna nanna federico salvatore] [http://all.rigour.info/elettronica-flash/ elettronica flash] [http://paga.rigour.info/settore-secondario/ settore secondario] [http://down.rigour.info/blog/ta-ra.htm ta ra ta ta] [http://up.rigour.info/description/lib/batterie-.htm batterie 6310 nokia] [http://note.rigour.info/content/view/hoel-sorrento.htm hoel sorrento] [http://italy.rigour.info/blog/joseph-fonseca.htm joseph fonseca en vivo] [http://dir.rigour.info/nike-philips/ nike philips] [http://guest.rigour.info/library/html/sensore-presenza/ sensore presenza luce esterni] [http://pagina.rigour.info/acquistare-libro/ acquistare libro on line] The Joint Test Action Group (JTAG) standardized a 5 pin boundary-scan test port as IEEE Std. 1149.1, "Standard Test Access Port and Boundary-Scan Architecture".
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The Joint Test Action Group (JTAG) standardized a 5 pin boundary-scan test port as IEEE Std. 1149.1, "Standard Test Access Port and Boundary-Scan Architecture".
  
 
While originally intended for boundary-scan testing of PCB assemblies, to replace bed-of-nails testing, the JTAG port included in many popular microprocessors is also often used for programming and debugging.
 
While originally intended for boundary-scan testing of PCB assemblies, to replace bed-of-nails testing, the JTAG port included in many popular microprocessors is also often used for programming and debugging.

Revision as of 13:25, 23 August 2007

The Joint Test Action Group (JTAG) standardized a 5 pin boundary-scan test port as IEEE Std. 1149.1, "Standard Test Access Port and Boundary-Scan Architecture".

While originally intended for boundary-scan testing of PCB assemblies, to replace bed-of-nails testing, the JTAG port included in many popular microprocessors is also often used for programming and debugging.

"If you have information on how to connect a JTAG probe to a Nokia phone, please let me know."

There are five pins:

  • TCK/clock
  • TMS/mode select
  • TDI/data in
  • TDO/data out
  • TRST/reset (optional), when driven low, resets the internal state machine.

Except for TCK, all other JTAG lines should be pulled high via a resistor.


WARNING: unconfirmed pinout. Please add links to pinout standard.

20 Pin JTAG PinOut

Which one of these is right?

   Pin Function Pin Function
   1   TRST     2   GND
   3   TDO      4   GND
   5   TDI      6   GND
   7   TMS      8   GND
   9   TCK     10   GND
   11  VPP_E   12   GND
   13  A/W     14   GND
   15  User 0  16   GND
   17  Rdy/Bsy 18   GND
   19  User 1  20   Vcc
    1  3.3 V    2  3.3 V
    3 nTRST     4 GND
    5 TDI       6 GND
    7 TMS       8 GND
    9 TCK      10 GND
   11  --      12 GND
   13 TDO      14 GND
   15 nRST     16 GND
   17  --      18 GND
   19  --      20 GND 


external links