JTAG
pioneer avx 7000 bill cosby meat balls shut up wavs vitamin d toxicity insurance executive job weekendje berlijn rick santorum chicken incubator richard hatch kit car trader atacama map printable care bear coloring pages national teaching certification resident evil film cast nba merchandise threw it all away lyrics harmony-central.com photograph of sand dunes normandy campaign pinoy music online cabinet crown installing kitchen molding osha safety program mobile text messaging easy cd creator upgrade download ssw holding barely dressed chlamydia gonneria symptom apartment boston south melamine bowls zander aviation maintenance training auction site web squaresoft wallpapers a time to kill by landscape photo art audio rendering video body natural scrubs dance reed zulu naked amateur housewife savannah, ga las vegas security conferences vir l lysine bell helicopter nudist young teen picture home idea mom stay work anti barking dog collar las mgm ticket vegas truck racks price is right models msp and open source kirsten dunst boobs mortgage reduction plan mexican pussy feel good molly sims kickboxing championships birth date free search mature teacher napoleon dynamite quotes kips song food that are high in protein anders celsius childhood hot layout johnstons toyota bush machine head knar andrea barber ragtime cast list philbrook tulsa ok arizona manufactured homes bullets phone network reviews las vegas golf properties herman munster loans with bad credit cannes film festival mandingo porn star caicos inclusive turks fort sumpter edmond scientific bobek nicole picture gift scottish terrier billy and mandy mccreary modern furniture if you want to find hell with me dna rna supplements grave of the fireflies holiday gift for pet fidelity national property and casualty insurance inertial reference unit loltia porn authoring best dvd software cold shower counting crow accidentally in love lyric abercrombie model album day new songz trey trey epoxy garage floor coating major arcana fast food nutritional values alexis bledel boyfriend new nipple pinching 1997 acura integra 7.3 diesel engine liter powerstroke bl boy new home seattle wa lopez undress new york lottery king shaka zulu steven king men stripping down patio outdoor furniture second grade writing paper steam boats of the 1800s www.mysterynet.com khaki cap personal training marketing hearing aid prices automotive engine performance technician today privet variegated online chat rooms spacenuts dolce eye frame gabbana glasses paint brush and pallet cobb realty aol news samantha torres pic liudmila kondakova malika harley babes remove aurora trailer vautour importance marketing research natural cures www.householdbank.com texas ski ranch new home valencia ca pipi teen 2 bella ciao game hidden camera in girl locker room electrical handbook laser light stimulation ultrasound muppet stage set teex self defence rave clothing store prescription drug canada x m satellite radio wedding wine glass charm sleep by number max fisch domina guide aapt broadband 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
- 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.