JTAG

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only mortgage loan vacatures nederland overzicht towview ginger pussy mortal combat theme pamela naked foot fetish stories hunk hunters haunts cherry blossom bordello map cheer leaders nude lund truck accessories sex4u amber brkich nude lesbian shemales ronharris increasing gas mileage products twister naked teen pregnancy raven starfire allison mack nude finger pussy ziyi zhang nude pissing cyberskin dildo women fisting cum on nipples but sex math activities ageless xtra hamtaro hentai blue ridge georgia cabin rentals gothic slut kitchen chef decor alternative heating methods young lesbos nude pictures of paris hilton nebraska furniture mart gagging girls womens swim suits used cell phone first line drugs strep throat sex scene map gay college guys home 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

• the OpenJTAG wiki ( http://openjtag.net/ )
• "When designing development boards what style JTAG connector should I use?" The 20-pin JTAG connector.
• "Introduction to JTAG" by Rob Oshana 2002
• "JTAG FAQ" by Stas Khirman 2004
• a parallel port JTAG Debugger circuit for Philips LPC2xxx ARM microcontrollers. by K9JTAG (uses Schmitt trigger inverters, so it can connect 3.0 V target boards to a standard 5.0 V parallel port)
• parallel port JTAG "Building Simple JTAG Cable" (resistors only)
• "JTAG Bus Description"
• Wikipedia:JTAG
• OpenWRT wiki: JTAG Cables
• [http://jtag-arm9.sourceforge.

1000 net/ the Jtag-Arm9 project at Sourceforge] gives instructions and photographs of a Home made JTAG interface (also shows an example of prototyping using SMT IC)

• the JTAG protocol by Mark Whitis
• "Building AVR Jtag clone" includes schematics and firmware.

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