Difference between revisions of "JTAG"

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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".
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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.
Line 33: Line 33:
 
     19  User 1  20  Vcc
 
     19  User 1  20  Vcc
  
     1 +3.3 V    2 +3.3 V
+
     1 3.3 V    2 3.3 V
 
     3 nTRST    4 GND
 
     3 nTRST    4 GND
 
     5 TDI      6 GND
 
     5 TDI      6 GND

Revision as of 21:15, 17 October 2007

zeljko joksimovic dino merlin plextor lettore ondo (stato) mariah carey upskirt ora che ho bisogno di te home theater a parma stadio album love ridden max 2002 top model prezzo nokia 6680 marrone five elysia tastiere musicali elettroniche hp r3430ea barzelletta varia nikon coolpix l1 2 5 lcd compact 6 2 mp area manager estero (estero) la mia amica silvia maserati quattroporte evoluzione gastro houdek jacques aspen shopping memory barbra streisand giacche moto dainese sborrate in bocca smart card platinum fiera inquieta mp3 these words natasha traduzione canzone ex eamon finestra arredamento lg hifi vecchi froci pioneer pdp506xde www imperatrice it selena legalizacion hp lightscribe fore gioco spaider man santya maria goretti irrogare kaliber44 compsy sony dcrhc19e philips 6070 amplificatore con radiomicrofono autumn flower verso de amor scanner caricatore automatico store play 50gb noce moscata x5 bmw 4 6 santiago de cuba copenhagen stanza cartoon gay gratis televisori lcd con staffa da parete mario winans mp3 monitor lcd samsung 19 sm adsl modemrouter router ethernet wireless acer al1913s lcd raccolta punti genesis pro 503 obiettivi digitali canon candy nova home theatre dvd strano incontro fammi andar via sony cybershot dscf828 lcd loewe turion 64 ml37 informatica vibo valentia cori nadine mtv ringtonez decoder c i attacchi aerei videocamera sanyo vpc c5 frozne epson epl6200 fuga incubo hp portatile dragonsta di tei gongolo fc kahuna plastic card printers concerto primo maggio 2004 lcd neovo tv tuner toppila heikki laserjet hp asciugamani di carta legion extrangera epson stylus 1290s allison frosinone maestra maktar imagi project giradischi video fanfare militari metal slug 3 lo strano ricatto di una ragazza perbene peppino gagliardo www formen com to fast to furios sonic x vol 04 drum scenarios chiara si spara gps per qtek 2020 chain of fools dscw1 sony musetto augurio festa donna www esami compiuter it www istruzione lombardia it webcame tyan s2892g3nr ricette regionali italiane rilevatore di presenza katherine kelly lang foto securpol vigilantes ognuno cerca il suo gatto mi faccio la barca summer loving la rapina al treno postale urba serena gritti tammurriata modificare cd per satellitari gay nudo skunk anansie sheikh abu musab al www katia pedrotti too it martinelli culla palm gps kit mail tiscali it milano bangkok biglietti aerei monitor hp l1902 km 0 jaguar xd memory 128 orovacanze ben seni sevdugumi chat universale straniera dotazioni sicurezza nautica www fisg it hotmoms popeye vol 14 driver mouse joystick etc carcere di caltanissetta piscina varese philips lcd ambilight wonderland una sposa per due a716 pda jenny lee nolen vacheron constantin kanye west jesus walks macchine per caffe www jus gov ar cd cover ska p brevedades de los dias forli ostello sca dahman desideria router adsl digicom michelangelo office merchant france scuola guida euro david coulthard parigi economico hotel kyriad sesso ad amsterdam curtis canottaggio stam perth cose fare kabhi khushi kabhi gham spiderman contro doc ock simens spa hoya filter nec e228 usb driver mac gocce di memoria lu n presidenti esterni 2004 batteria nokia 6210 intervista di ascanio stampanti hp 4 cartucce conscience hendrik processore intel pentium socket 478 britney spears comix testo del cover della canzone di goldrake ettore bassi smart cdi distributori caffe per ufficio tom tom go 5 radeon ati 9600 256mb congelatori ad incasso film erotici da scaricare nerd she wants to move cambio automatico queens immaggini incidenti 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