JTAG

From OpenCircuits
Revision as of 20:22, 24 November 2007 by 194.69.1.23 (talk)
Jump to navigation Jump to search

house plan satellite tv card american airlines homepage cost bariatric surgery eyeglass chains doberman star wars viagra online anime juanita bynum jennifer lopez naked kelvinator tom petty tour dates mature babes lucky jeans outlet sex videos free free and legal mp3 downloads sex godess bargain network maps satellite tattoo picture anal penetration washington mutual bank routing number adult costumes pay day loan candid verison wireless broadband cd key roxio snowblowers home business fashion design airline continental reservation used car ford dealers bed bath and beyond golf tip dog bounty hunter t shirts plastic pants banff hotel ford fusion national car rental pregnantsex live wire music downloads burberry handbag photo sex printable calendar crest uniforms free ringtones for tmobile sidekick mp3 ringtones nextel south west airline reservation free black sex movie clip tattoos northwest airline restasis pregnancy weekly new jordans roulette game free online greeting cards body building free adult stories business insurance discount hotels propranolol washington mutual bank jobs mercury outboard motor part apple promo savings code free xxx movies hairy man symptoms of low testosterone home based business opportunities keira knightley naughtygirls free slots ronaldinho teens masturbation airline jobs cheap online phentermine angelina jolie picture animal cell phone cover aldo shoe sport jersey gift baskets bath products anal sex video bmw calvin klein replica rolex watch bands gooogle charity jobs order xanax smyths toy store angel picture friends mom diuretic free download of microsoft excel breast enlargement pill clopidogrel custom motorcycle wheel dating single man simpson helmets walt disney bactroban skoften mature women naked painfull fly fishing trips cutegirlfriend icc number here nude at home life insurance children horse betting rape photos sexy wedding dress teen camel toe home male celebrities nude here sex tapes rectal temperature rent timeshare panty spanking slave ships pantyhose fuck here snaggleporn fitness for kids arizona realty exotic dancer costumes wife sucking strung out beerfarts pedo sex nfl football betting princess aurora lionmovies marvel characters apartment building financing anal sex costa mesa real estate black girls and white guys tent camping true butts utility software solution dragostea din tei mp3 voyer here anime fucking swingers orgy sex with dad home kelly monaco playboy naked pictures of 14 year old girls fucking twins iris goo goo dolls interest 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

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)